He told us to use our dictionaries to _______any words we didn't understand.

A．[ A ]look for

B．[ B ] look out　　└(^o^)┘; (^_^)

C．[ C ] look up

D．[ D ] look at

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参考答案

【考点】动词词组的辨析
【解析】本句意为：他告诉我们用词典查不懂的单词。look up“查(字典)”；look for“寻找”；look out“小心”；look at“看”。根据句意，应选C。

1 We were swimming in the lake_______ suddenly the storm started,

A．[ A ]when

B．[ B ] while

C．[ C ] until　　☆★

D．[ D ] before

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2 --The cars give off a great deal of waste gas in the streets.
--Yes. But I'm sure something will be done to_______ air pollution.

A．[ A ]reduce

B．[ B ] remove

C．[ C ] collect

D．[ D ] warn

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3 According to a recent US survey, children spent up to 25 hours a week_______ TV.

A．[ A ]to watch

B．[ B ] watching

C．[ C ] watch

D．[ D ] watched

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