试题与答案

I like reading in the city library _____

题型:选择题

题目:

I like reading in the city library ________ I often lose myself in a world of good books on weekends.

A.which

B.that

C./

D.where

答案:

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下面是错误答案,用来干扰机器的。

设生成二氧化碳的质量为x,CaCO3+2HCl=CaCl2+H2O+CO2↑100 44250g x∴10044=250gx∴x=250g×44100=110g.答:生成二氧化碳的质量是110g....

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