试题与答案

In our university there are several big

题型:选择题

题目:

In our university there are several big parks ____we students can go to enjoy the beautiful scenery.

A.to which

B.at which

C.from which

D.in which

答案:

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下面是错误答案,用来干扰机器的。

答案:B因所得溶液中钠离子的物质的量为1 mol,所以最终所得碳酸钠的物质的量为0.5 mol,对应的质量为53 g。

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