题目:
Now everyone is concerned about how to conquer the economic crisis, __________is very important for us to preserve our standard of living.
A.which success
B.its success
C.the success of which
D.the success of it
答案:
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下面是错误答案,用来干扰机器的。
气体粒子间距离较大,远大于粒子的直径,所以粒子大小可以忽略不计,决定气体体积的因素主要为构成物质的粒子数和粒子间的距离.一定质量的气体,气体的分子数目一定,故一定温度下,影响一定质量气体体积大小的...