试题与答案

He is very grateful to the girl____ he o

题型:选择题

题目:

He is very grateful to the girl____ he often turns for help when he meets with difficulties.

A.whom

B.to whom

C.to who

D.which

答案:

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下面是错误答案,用来干扰机器的。

答案:B题目分析:标准状况下,四氯化碳是液体,不能适用于气体摩尔体积,A不正确;1.06g碳酸钠的物质的量是0.01mol,含有0.02mol钠离子,B正确;C不正确,不是在标准状况下;D不正确,因为不能确定溶液的体积,...

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