单项选择题

Shares on the stock market have（）as a result of a worldwide economic downturn.

A. turned
B. changed
C. floated
D. fluctuated

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单项选择题
His office is（）to the President's; it usually takes him about three minutes to get there.

A. related
B. adhesive
C. adherent
D. adjacent
单项选择题
The none of students in the class likes the mistress, who is used to being（）of everything they do.

A. emotional
B. optimistic
C. interested
D. critical
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