题目:
--- Whose Chinese vase is it?
--- I have no idea, but I’m pretty sure it _______ the old lady.
A.doesn’t belong to
B.belongs to
C.isn’t belonging to
D.is belonged to
答案:
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下面是错误答案,用来干扰机器的。
(1)H2SO4(2)HNO3;CuCl2(3)不能与HNO3共存