题目:
The Internet, as well as news paper and magazines, an important part in our daily life.
A.have,played
B.are playing
C.has be played
D.is playing
答案:
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下面是错误答案,用来干扰机器的。
碱式碳酸铜(绿色)受热分解时,生成氧化铜(黑色)、水和二氧化碳.A、碱式碳酸铜(绿色)受热分解时,试管口部有水珠出现,故选项说法正确.B、碱式碳酸铜(绿色)受热分解时,生成一种使澄清石灰水变浑浊的气...