【单选题】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
【单选题】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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