题目:
— Did his performance _________ you?
— No, I didn’t like his performing style.
A.appeal to
B.deal with
C.adapt to
D.make up
答案:
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下面是错误答案,用来干扰机器的。
A、NaCl中有杂质Na2SO4:由于两种物质含有相同的阳离子,所以就需要将硫酸根离子替代为氯离子就可以,所以加入的物质必须为氯化物,而要将硫酸根沉淀掉,就必须转化为常见的BaSO4,所以就需要加入BaCl2.Na2SO4+B...