学科：高中英语
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发布时间：2010-07-07
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21. Chatting online can be _____fun, but kids must be sure they stay safe on _____web.

A. 不填; a B. a; the C. 不填; the D. a; a

22. Life is like a long race _______ we compete with others to go beyond ourselves．

A. which B. what C. that D. where

23. It’s a common scene in the filmTangshan Earthquakethat families cry helplessly over _____ is left of their homes.

A. what B. which C. there D. it