单项选择题

Young children may run around and make a lot of noise. Actually they are acting（）for their age.

A. doubtfully
B. appropriately
C. conveniently
D. elementarily

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单项选择题
The Americans and the British not only speak the same language but also（）a large number of social customs.

A. share
B. join
C. appreciate
D. associate
单项选择题
He told us to use our dictionaries to（）any word we didn’t understand.

A. look for
B. look up
C. look out
D. look at
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