单项选择题

The dog has always been considered man’s best friend. Always noted for being particularly faithful in watching over children, he also has his place by the fireside, in the cow pasture, on the sheep range, and beside the hunter in forest or blind. He is easy to train, works hard, and often performs astonishing feats. And in the’ frozen Polar Regions he was once the principal motive power, before being largely displaced by the plane and helicopter.
(77) Because he howls or whines in the presence of impending death, the dog was once thought to have supernatural powers and believed to be capable of seeing gods and ghosts invisible to men. Actually, the basis for these beliefs lies in ’the hound’s sensitivity to people’s feelings and his superior hearing ability and sense of smell, which enable him to detect signs hidden from human observation. His record of saving lives is outstanding, for he often gives warning of fire and other dangers not noticed by his master.
The dog’s major contribution, however, has been to medical research. (78) Both his diet and his structure are comparable to those of the human being, and so he has been the subject of countless experiments. Open-heart surgery has been made possible largely because of the dog . But his sacrifice has repaid his own species as well by safeguarding it from rabies, distemper, and other diseases.

The article does not mention whether the scientists' experiments with dogs have ______.

A.benefited animals other than dogs
B.served man
C.helped other dogs
D.contributed to medical knowledge
题目列表

你可能感兴趣的试题

单项选择题

The dog has always been considered man’s best friend. Always noted for being particularly faithful in watching over children, he also has his place by the fireside, in the cow pasture, on the sheep range, and beside the hunter in forest or blind. He is easy to train, works hard, and often performs astonishing feats. And in the’ frozen Polar Regions he was once the principal motive power, before being largely displaced by the plane and helicopter.
(77) Because he howls or whines in the presence of impending death, the dog was once thought to have supernatural powers and believed to be capable of seeing gods and ghosts invisible to men. Actually, the basis for these beliefs lies in ’the hound’s sensitivity to people’s feelings and his superior hearing ability and sense of smell, which enable him to detect signs hidden from human observation. His record of saving lives is outstanding, for he often gives warning of fire and other dangers not noticed by his master.
The dog’s major contribution, however, has been to medical research. (78) Both his diet and his structure are comparable to those of the human being, and so he has been the subject of countless experiments. Open-heart surgery has been made possible largely because of the dog . But his sacrifice has repaid his own species as well by safeguarding it from rabies, distemper, and other diseases.

The dog has been of most value to man in the development of ______.

A.a treatment for rabies
B.open-heart surgery
C.a cure for distemper
D.Both A and C
单项选择题

The dog has always been considered man’s best friend. Always noted for being particularly faithful in watching over children, he also has his place by the fireside, in the cow pasture, on the sheep range, and beside the hunter in forest or blind. He is easy to train, works hard, and often performs astonishing feats. And in the’ frozen Polar Regions he was once the principal motive power, before being largely displaced by the plane and helicopter.
(77) Because he howls or whines in the presence of impending death, the dog was once thought to have supernatural powers and believed to be capable of seeing gods and ghosts invisible to men. Actually, the basis for these beliefs lies in ’the hound’s sensitivity to people’s feelings and his superior hearing ability and sense of smell, which enable him to detect signs hidden from human observation. His record of saving lives is outstanding, for he often gives warning of fire and other dangers not noticed by his master.
The dog’s major contribution, however, has been to medical research. (78) Both his diet and his structure are comparable to those of the human being, and so he has been the subject of countless experiments. Open-heart surgery has been made possible largely because of the dog . But his sacrifice has repaid his own species as well by safeguarding it from rabies, distemper, and other diseases.

The dog has always been considered man’s best friend. Always noted for being particularly faithful in watching over children, he also has his place by the fireside, in the cow pasture, on the sheep range, and beside the hunter in forest or blind. He is easy to train, works hard, and often performs astonishing feats. And in the’ frozen Polar Regions he was once the principal motive power, before being largely displaced by the plane and helicopter.
(77) Because he howls or whines in the presence of impending death, the dog was once thought to have supernatural powers and believed to be capable of seeing gods and ghosts invisible to men. Actually, the basis for these beliefs lies in ’the hound’s sensitivity to people’s feelings and his superior hearing ability and sense of smell, which enable him to detect signs hidden from human observation. His record of saving lives is outstanding, for he often gives warning of fire and other dangers not noticed by his master.
The dog’s major contribution, however, has been to medical research. (78) Both his diet and his structure are comparable to those of the human being, and so he has been the subject of countless experiments. Open-heart surgery has been made possible largely because of the dog . But his sacrifice has repaid his own species as well by safeguarding it from rabies, distemper, and other diseases.

The article does not mention whether the scientists' experiments with dogs have ______.

A.benefited animals other than dogs
B.served man
C.helped other dogs
D.contributed to medical knowledge
单项选择题

The dog has always been considered man’s best friend. Always noted for being particularly faithful in watching over children, he also has his place by the fireside, in the cow pasture, on the sheep range, and beside the hunter in forest or blind. He is easy to train, works hard, and often performs astonishing feats. And in the’ frozen Polar Regions he was once the principal motive power, before being largely displaced by the plane and helicopter.
(77) Because he howls or whines in the presence of impending death, the dog was once thought to have supernatural powers and believed to be capable of seeing gods and ghosts invisible to men. Actually, the basis for these beliefs lies in ’the hound’s sensitivity to people’s feelings and his superior hearing ability and sense of smell, which enable him to detect signs hidden from human observation. His record of saving lives is outstanding, for he often gives warning of fire and other dangers not noticed by his master.
The dog’s major contribution, however, has been to medical research. (78) Both his diet and his structure are comparable to those of the human being, and so he has been the subject of countless experiments. Open-heart surgery has been made possible largely because of the dog . But his sacrifice has repaid his own species as well by safeguarding it from rabies, distemper, and other diseases.

The dog has always been noted for ______.

A.protecting children
B.assisting shepherds
C.helping hunters
D.herding cattle
单项选择题

The dog has always been considered man’s best friend. Always noted for being particularly faithful in watching over children, he also has his place by the fireside, in the cow pasture, on the sheep range, and beside the hunter in forest or blind. He is easy to train, works hard, and often performs astonishing feats. And in the’ frozen Polar Regions he was once the principal motive power, before being largely displaced by the plane and helicopter.
(77) Because he howls or whines in the presence of impending death, the dog was once thought to have supernatural powers and believed to be capable of seeing gods and ghosts invisible to men. Actually, the basis for these beliefs lies in ’the hound’s sensitivity to people’s feelings and his superior hearing ability and sense of smell, which enable him to detect signs hidden from human observation. His record of saving lives is outstanding, for he often gives warning of fire and other dangers not noticed by his master.
The dog’s major contribution, however, has been to medical research. (78) Both his diet and his structure are comparable to those of the human being, and so he has been the subject of countless experiments. Open-heart surgery has been made possible largely because of the dog . But his sacrifice has repaid his own species as well by safeguarding it from rabies, distemper, and other diseases.

Dogs have been the subject of countless experiments because they are similar to human beings in ______.

A.habit
B.structure
C.temperament
D.appearance
单项选择题

The dog has always been considered man’s best friend. Always noted for being particularly faithful in watching over children, he also has his place by the fireside, in the cow pasture, on the sheep range, and beside the hunter in forest or blind. He is easy to train, works hard, and often performs astonishing feats. And in the’ frozen Polar Regions he was once the principal motive power, before being largely displaced by the plane and helicopter.
(77) Because he howls or whines in the presence of impending death, the dog was once thought to have supernatural powers and believed to be capable of seeing gods and ghosts invisible to men. Actually, the basis for these beliefs lies in ’the hound’s sensitivity to people’s feelings and his superior hearing ability and sense of smell, which enable him to detect signs hidden from human observation. His record of saving lives is outstanding, for he often gives warning of fire and other dangers not noticed by his master.
The dog’s major contribution, however, has been to medical research. (78) Both his diet and his structure are comparable to those of the human being, and so he has been the subject of countless experiments. Open-heart surgery has been made possible largely because of the dog . But his sacrifice has repaid his own species as well by safeguarding it from rabies, distemper, and other diseases.

The dog probably whines in the presence of death because he can ______.

A.sees ghosts and spirits
B.hold supernatural powers
C.sense unhappiness around him
D.perform astonishing feats
微信扫码免费搜题