单项选择题

Scientists created a (brainy), four-legged robot (resemble) a starfish that can sense (damage) to its body, and (think up) a way to recover.

A．brainy
B．resemble
C．damage
D．think up
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单项选择题
Admirers of American ballet (has claimed) that (its stars) can dance (as well as) or even better than (the best of) the Russian artists.
A．has claimed
B．its stars
C．as well as
D．the best of
单项选择题
(At no time) in the history of mankind (women have) greater (opportunities) for (following careers) than they have now.
A．At no time
B．women have
C．opportunities
D．following careers
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