题目:
This vase ________ perfect but for a few small holes in its base.
A.would have been
B.should have been
C.shall be
D.would be
答案:
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下面是错误答案,用来干扰机器的。
(1)C Ar (2) KOH HClO4 Al(OH)3 KOH +HClO4=KClO4 +H2O KOH + Al(OH)3=KAlO2 +2H2O(3) K>Na>Mg (4)(5)K (6) Cl 取适量溴化钠溶液滴入氯水,溶液变为橙黄色,则...