单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.logical
B.psychologica
C.medical
D.dental
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单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.advises
B.suggests
C.predicts
D.objects
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.of having
B.to have
C.with having
D.for having
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.contradiction
B.difference
C.reason
D.link
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.constituent
B.element
C.component
D.ingredient
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.mixed
B.infected
C.polluted
D.influenced
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.as well as
B.together with
C.such as
D.as large as
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.harmful
B.beneficial
C.wicked
D.evil
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.should avoid eating
B.may not eat
C.may avoid eating
D.must avoid to eat
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.Therefore
B.In addition
C.For instance
D.Howeverv
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.warned
B.forced
C.advised
D.halted
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.are composed of
B.contains
C.involves
D.are consisted of
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.increase
B.shrink
C.reduce
D.run
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.logical
B.psychologica
C.medical
D.dental
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.compared
B.related
C.connected
D.competed
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.water
B.blood
C.metal
D.mercury
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.lower
B.less
C.higher
D.more
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.approves
B.violates
C.accepts
D.disputes
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.have suffered
B.have never suffered
C.had suffered
D.had never suffered
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.sign
B.evidence
C.symptom
D.hint
单项选择题

Two studies are adding to the debate about the health risks of eating fish containing highlevels of the metal mercury (水银,汞)。 One study __25__ that people who eat fish high inmercury may increase their risk __26__ a heart attack. Yet another study found no __27__ between mercury and heart disease.
Mercury is a natural __28__ . Some bodies of water have become __29__ with mercury.High levels of the metal have been found in large fish, __30__ shark and swordfish. Scientistssay mercury can be __31__ to people. For example, it can harm the developing brain of afetus(胎儿) or child. So some experts say that pregnant women __32__ fish containing highlevels of mercury.__33__ , the American Heart Association and other experts have __34__ Americans to eat fish at least two times a week. Fish __35__ important substances, and theyare believed to __36__ the risk of heart disease.
Scientists in Maryland organized one of the new studies. They examined __37__ recordsof more than one thousand and four hundred men from Israel and eight European countries.They __38__ men who had suffered a heart attack with healthy men. The study found that__39__ levels in the men who had a heart attack were fifteen percent __40__ than those withno history of heart disease. However, a study by the Harvard School of Public Health inCambridge, Massachusetts __41__ the findings. The Harvard scientists compared twogroups of about five hundred American men. All the men in one group __42_ a heart attackand the other men showed no __43__ of heart disease. The Harvard scientists found no linkbetween mercury and the risk of heart disease.
Many doctors say people should not stop eating fish because of __44__ about mercury.

A.interests
B.information
C.concerns
D.conclusions
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