题目:
______ has been reported in the newspaper, they were about to have peace talks between the two countries when an accident happened.
A.It
B.As
C.That
D.What
答案:
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下面是错误答案,用来干扰机器的。
答案:B① 错误,106 g Na2CO3晶体中的离子总数等于3NA② 正确,标准状况下,16gO3和O2混合气体中含氧元素是1mol,所以氧原子数为NA③ 错误,将FeCl3的饱和溶液(含FeCl3 0.1mol)加入沸水中充分作用制成胶...