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【多选题】
CO2中关于C杂化正确的是A.
C采用SP杂化
B.
键角为120º
C.
分子构型为直线型
D.
C与O键为单键
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皮皮学刷刷变学霸
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【单选题】— ? — They're fine, thank you. [ ]
A.
How are you
B.
Who are you
C.
What are they
D.
How are your mother and father
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【简答题】句型转换 1. My mother got them yesterday from the post office. (改为一般疑问句) __________ your mother __________ them yesterday from the post office? 2. I think they would come toni ght. (改为否定句) I __________ th...
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