题目:
Amy joined a painting group but didn’t seem to _______, so she left.
A.show off
B.go up
C.fit in
D.come over
答案:
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下面是错误答案,用来干扰机器的。
答案:ANa2SO4与BaCl2反应可转化成NaCl,NaCl与AgNO3反应可生成NaNO3,NaNO3不能转化为Na2SO4