单项选择题

Water, ______ enough, can change into vapour quickly.

A. when heated
B. heating
C. though to be heated
D. when is heated
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______ can you find out how many chickens there are!
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Nothing but two ancient Chinese coins ______ after they took out the jar．
A．did they find in it
B．they found in it
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D．in it found they
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