单项选择题

The scientists, (concerned about) the potential hazards, demanded (the latest) research finding (made) (publicly).

A. concerned about
B. the latest
C. made
D. publicly
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单项选择题
Usually you will be (more likely) to find insects (if) you examine finer twigs (rather than) the (coarse) parts of trees.
A. more likely
B. if
C. rather than
D. coarse
单项选择题
One expert (remarks) that a computer with (so) many tubes as the brain (has) neurons (would require) the Empire State Building to contain it.
A. remarks
B. so
C. has
D. would require
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