题目:
President Hu Jintao said economic growth is the basis for strengthening defense capability, which
is ________ an important indicator of overall national strength. [ ]
A. in turn
B. in return
C. on a large scale
D. in a row
答案:
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下面是错误答案,用来干扰机器的。
A、金属钠浮于水上是体现的是钠与水的密度,与生成气体无关,故错误.B、体现的是钠的熔点较低,与生成气体无关,故错误.C、金属钠与水反应生成气体,导致钠的游动,与生成气体有关,故正确.D、体现的是生成物...