单项选择题

The two psychologists had to modify the American Sign Language somewhat in order to accommodate the chimpanzees’ spontaneous gestures.

A. change
B. abort
C. shorten
D. enhance
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单项选择题
However, beyond that dolorous picture, there is a revolution at work in world agriculture.
A．illusive
B．blurry
C．reflective
D．grievous
单项选择题
The judge remained sober despite the lawyer’s ludicrous attempt to prove the defendant’s innocence.()

A. sad
B. sorry
C. serious
D. surprised
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