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试题详情及答案解析

We have to the questions before answering them.

A．look after	B．look up
C．look through	D．look at

答案：C

试题分析：句意：在回答这些问题之前，我们必须仔细审题。分析选项：look after照顾；look up查阅；look through仔细审题；look at看。联系题意，question一定是仔细审题。故选C
考点：考查动词短语的辨析。