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5.Our building  stays warm at night because the wall ______    the heat of the sun in the daytime.(  )
A.conductsB.trapsC.reflectsD.provides

分析 我们的建筑夜间很温暖,是因为它的墙壁白天吸收了太阳的热量.

解答 答案:B   
A conduct 带领,行为,导电;B trap 困住,锁住(热量,气体等);   C reflect反射(光线);     D provide提供;根据句意应该是"墙壁锁住了太阳白天的热量",故选B.

点评 本题考查动词辨析,首先分析每个选项中动词的意思和用法,然后结合句意确定恰当的答案.

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