听力原文:M: Finally I got the chance to put on my new suit tonight. I've got to leave a good impression with your family. W: Come on, it's merely a family reunion. So jeans and T-shirts are just fine. Q: What does the woman imply? (15)
A.
She would like to see the man in formal dress.
B.
She believes the man's suit is appropriate for this occasion.
C.
The man could dress casually.
D.
Suit and tie are recommended for tonight's reunion.
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参考答案:
举一反三
【单选题】下列关于铜副族和锌副族元素的叙述中,正确的是
A.
两族元素失去最外层 s 电子后分别呈现 +1 和 +2 氧化态,故其单质和化合物的性质分别与 IA 和 IIA 族元素非常类似