题目内容（请给出正确答案）

[单选题]

The scientists _____ the fossils closely to determine their age.

A.handed

B.drew

C.handled

D.approached

单选题，请选择你认为正确的答案：

ABCD

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第1题

The scientists（success) ______ launched the satellite in spite of all the difficulties．

The scientists(success) ______ launched the satellite in spite of all the difficulties．

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第2题

A．scientistsB．peopleC．menD．women

A.scientists

B.people

C.men

D.women

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第3题

Scientists are trying to make ______ investigation.A．furtherB．fartherC．furthestD．farthest

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A．further

B．farther

C．furthest

D．farthest

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第4题

老科学家、中年科学家很重要，青年科学家也很重要。

A.The veteran and middle-aged scientists are important, and so are the young ones.

B.The veteran, middle-aged scientists are important, and so are the young ones.

C.The veteran and middle-aged scientists are important, so are the young ones.

D.The veteran, middle-aged scientists are important, so are the young ones.

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第5题

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第6题

The scientists are still () inventing new methods of reaching outer space.

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第7题

Scientists doubt whether it's______to regulate one's biological clock by drinking.A．feasib

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A．feasible

B．incredible

C．fashionable

D．valuable

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第8题

Many scientists have been probing psychological problems.A．solvingB．exploringC．settlingD．h

Many scientists have been probing psychological problems.

A．solving

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