单项选择题

Training astronauts（）not an easy thing.

A．are
B．is
C．were
D．be

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单项选择题
（）with the size of the whole earth, the highest mountain does not seem high at all.

A．When compared
B．Compare
C．While comparing
D．Comparing
单项选择题
Would you be（）by the idea of going to Paris

A．exciting
B．excitably
C．excited
D．excitedly
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