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【单选题】
晶胞中各个棱边长度叫做 。A.
原子间距
B.
原子半径
C.
晶格常数
D.
原子直径
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皮皮学刷刷变学霸
举一反三
【简答题】接长钢筋有三种办法：[填空(1)]、[填空(2)]、[填空(3)]。
【单选题】To their great relief, the missing child returned home, ______, after an absence of two weeks.
A.
looked tired and healthy
B.
tired and healthy
C.
tiredly and healthily
D.
looking tired and healthily
【简答题】A) Stay away for a couple of weeks. B) Check the locks every two weeks. C) Look after the Johnsons’ house. D) Move to another place.
【单选题】听力原文：M: These shoes are on sale. We can buy two pairs for the coming winter. W: But look at the price. My mother bought the same things at half the price. What are they talking about?
A.
The coming year.
B.
The man's mother.
C.
Buying shoes.
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