We shall probably never be able to _...

单项选择题

While a full understanding of what causes the disease may be several years away, ______ leading to a successful treatment could come much sooner.

A.a distinction
B.a breakthrough
C.an identification
D.an interpretation

单项选择题

To ______ important dates in history, countries create special holidays.

A.commend
B.memorize
C.propagate
D.commemorate

单项选择题

The machinery had been wrecked so efficiently that police were sure it was a case of ______.

A.vagabond
B.sabotage
C.paradox
D.tachyon

单项选择题

No men was allowed to ______ on the livelihood of his neighbor.

A.wade
B.invoke
C.muffle
D.infringe

单项选择题

Now the ______ port city near the mouth of the mighty Yangtze River is hoping to leave its record of turmoil behind and renew its status as the epicenter of Chinese modernization.

A.flapped
B.congested
C.dined
D.dictated

单项选择题

Tom hardly seems middle-aged, ______ old.

A.less likely
B.let alone
C.much worse
D.all else

单项选择题

I believe reserves of coal here ______ to last for fifty years.

A.efficient
B.sufficient
C.proficient
D.effective

单项选择题

Under the guidance of their teacher, the pupils are building a model boat ______ by steam.

A.towed
B.pressed
C.tossed
D.propelled

单项选择题

She remains confident and ______ untroubled by our present problems.

A.indefinitely
B.infinitely
C.optimistically
D.seemingly

单项选择题

Body paint or face paint is used mostly by men in pre literate societies in order to attract good health or to ______ disease.

A.set aside
B.ward off
C.shrug off
D.give away

单项选择题

If Japan ______ its relation with that country it will have to find another supplier of raw materials.

A.precludes
B.terminates
C.partitions
D.expires

单项选择题

Doctors are often caught in a ______ because they have to decide whether they should tell their patients the truth or not.

A.puzzle
B.perplexity
C.dilemma
D.bewilderment

单项选择题

We shall probably never be able to ______ the exact nature of these subatomic particles.

A.assert
B.impart
C.ascertain
D.notify

单项选择题

Many types of rock are ______ from volcanoes as solid, fragmentary material.

A.flung
B.propelled
C.ejected
D.injected

单项选择题

Over the past ten years, natural gas production has remained steady, but ______ has risen steadily.

A.dissipation
B.disposal
C.consumption
D.expenditure

单项选择题

President Wilson attempted to ______ between the powers to end the war, but neither side was prepared to give in.

A.segregate
B.whirl
C.compromise
D.mediate

单项选择题

In the face of the disaster, the world has united to aid millions of ______ people trying to piece their lives back together.

A.fragile
B.primitive
C.vulnerable
D.susceptible

单项选择题

He has been drinking alcohol so heavily that his death severely affected and got his ______ alcoholically.

A.quittance
B.qualm
C.quail
D.quietus

单项选择题

Using tanks and heavy ______, they seized the town.

A.artillery
B.artifice
C.artery
D.artisan

单项选择题

Winning the Nobel Prize added even more ______ to the poet’s name.

A.lustre
B.foray
C.saliva
D.heresy

单项选择题

Please do not be ______ by his offensive remarks since he is merely trying to attract attention.

A.distracted
B.disregarded
C.irritated
D.intervened

单项选择题

He wouldn’t answer the reporters’ questions, nor would he ______ for a photograph.

A.summon
B.highlight
C.pose
D.marshal

单项选择题

The island is maintained as a ______ for endangered species.

A.wetlands
B.sanctuary
C.mire
D.heath

单项选择题

The hunter kept the lion’s skin and head as ______.

A.trophies
B.fillet
C.tulip
D.clown

单项选择题

More than one third of the Chinese immigrants in the United States live in California, ______, in San Francisco.

A.previously
B.predominantly
C.practically
D.permanently

单项选择题

The prospect of increase prices has already ______ worries.

A.irritated
B.provoked
C.inspired
D.hoisted

单项选择题

Mr. Smith complained about the ______ air-conditioner he had bought from the company.

A.infectious
B.deficient
C.ineffective
D.defective

单项选择题

Having finished their morning work, the clerks stood up behind their desks, ______ themselves.

A.expanding
B.stretching
C.prolonging
D.extending

单项选择题

Fiber-optic cables can carry hundreds of telephone conversations ______.

A.simultaneously
B.spontaneously
C.homogeneously
D.contemporarily

单项选择题

Small farms and the lack of modern technology have ______ agricultural production.

A.blundered
B.tangled
C.bewildered
D.hampered

单项选择题

They were ______ in their scientific research, not knowing what happened just outside their lab.

A.submerged
B.drowned
C.immersed
D.dipped

单项选择题

His successful negotiations with the Americans helped him to ______ his position in the government.

A.contrive
B.consolidate
C.heave
D.intensify

单项选择题

All the people in the stadium cheered up when they saw hundreds of colourful balloons ______ slowly into the sky.

A.ascending
B.elevating
C.escalating
D.lingering

单项选择题

With prices ______ so much, it is difficult for the school to plan a budget.

A.vibrating
B.fluctuating
C.fluttering
D.swinging

单项选择题

By patient questioning the lawyer managed to ______ enough information from the witnesses.

A.evacuate
B.withdraw
C.impart
D.elicit

单项选择题

It is reported that thirty people were killed in a ______ on the railway yesterday.

A.collision
B.collaboration
C.corrosion
D.confrontation

单项选择题

Foreign students are facing unprecedented delays, as visa applications receive closer ______ than ever.

A.appraisal
B.scanning
C.retention
D.scrutiny

单项选择题

We shall probably never be able to ______ the exact nature of these subatomic particles.

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While a full understanding of what causes the disease may be several years away, ______ leading to a successful treatment could come much sooner.

To ______ important dates in history, countries create special holidays.

The machinery had been wrecked so efficiently that police were sure it was a case of ______.

No men was allowed to ______ on the livelihood of his neighbor.

Now the ______ port city near the mouth of the mighty Yangtze River is hoping to leave its record of turmoil behind and renew its status as the epicenter of Chinese modernization.

Tom hardly seems middle-aged, ______ old.

I believe reserves of coal here ______ to last for fifty years.

Under the guidance of their teacher, the pupils are building a model boat ______ by steam.

She remains confident and ______ untroubled by our present problems.

Body paint or face paint is used mostly by men in pre literate societies in order to attract good health or to ______ disease.

If Japan ______ its relation with that country it will have to find another supplier of raw materials.

Doctors are often caught in a ______ because they have to decide whether they should tell their patients the truth or not.

We shall probably never be able to ______ the exact nature of these subatomic particles.

Many types of rock are ______ from volcanoes as solid, fragmentary material.

Over the past ten years, natural gas production has remained steady, but ______ has risen steadily.

President Wilson attempted to ______ between the powers to end the war, but neither side was prepared to give in.

In the face of the disaster, the world has united to aid millions of ______ people trying to piece their lives back together.

He has been drinking alcohol so heavily that his death severely affected and got his ______ alcoholically.

Using tanks and heavy ______, they seized the town.

Winning the Nobel Prize added even more ______ to the poet’s name.

Please do not be ______ by his offensive remarks since he is merely trying to attract attention.

He wouldn’t answer the reporters’ questions, nor would he ______ for a photograph.

The island is maintained as a ______ for endangered species.

The hunter kept the lion’s skin and head as ______.

More than one third of the Chinese immigrants in the United States live in California, ______, in San Francisco.

The prospect of increase prices has already ______ worries.

Mr. Smith complained about the ______ air-conditioner he had bought from the company.

Having finished their morning work, the clerks stood up behind their desks, ______ themselves.

Fiber-optic cables can carry hundreds of telephone conversations ______.

Small farms and the lack of modern technology have ______ agricultural production.

They were ______ in their scientific research, not knowing what happened just outside their lab.

His successful negotiations with the Americans helped him to ______ his position in the government.

All the people in the stadium cheered up when they saw hundreds of colourful balloons ______ slowly into the sky.

With prices ______ so much, it is difficult for the school to plan a budget.

By patient questioning the lawyer managed to ______ enough information from the witnesses.

It is reported that thirty people were killed in a ______ on the railway yesterday.

Foreign students are facing unprecedented delays, as visa applications receive closer ______ than ever.

After a period of probation a ______ becomes a nun.

A flock of birds was already ______ a cheerful morning chorus.

She felt it ______ upon her to raise the subject at their meeting.