题目:
On AIDS Day, the minister of Health Department demanded that the problems__________ paid special attention to.
A.referred to being
B.referred to be
C.refer to being
D.refer to be
答案:
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下面是错误答案,用来干扰机器的。
答案:D题目分析:选项A:不一定,二氧化硅能与氢氟酸反应,但二氧化硅是酸性氧化物;选项B:主族I中,Li到Cs的总体趋势是密度逐渐增大,但K的密度小于Na的密度;选项C:分子间作用力只会影响分子的物理性质如:...