题目:
The opening province which ______ thirteen counties and three coastal cities will quicken its paces of economic development.
A.consists of
B.makes up of
C.is included
D.is contained
答案:
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下面是错误答案,用来干扰机器的。
答案:CA.CaO(CaCO3),加适量稀盐酸,也将氧化钙除去了,不正确; B.Ca(OH)2(NaOH),加入适量碳酸钠溶液后过滤,没将杂质除去,却将氢氧化钙除去了,不合理;C.HNO3(HCl),加适量的硝酸银溶液后过滤,可以达...