题目内容

Project Hope is a(n)________ that raises money to build schools and buy books for children in poor areas.

A. community
B. club
C. organization
D. union

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There is no hospital in the ______area.

A. recent
B. temporary
C. immediate
D. academic

The answer depends on what kind of system is ______ adopted.

A. ultimately
B. lively
C. seriously
D. comparably

I have a lot of ______ activities,I'm on the school football team.

A. extracurricular
B. historical
C. academic
D. psychological

波源运动时,在波源运动方向前方的波长小,在波源后方的波长大。

A. 对
B. 错

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