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【判断题】
在CCl 4 、CHCl 3 和CH 2 Cl 2 分子中,碳原子都采用sp 2 杂化,因此这些分子都呈正四面体形。A.
正确
B.
错误
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反馈参考答案：
举一反三
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【简答题】阅读理解。 Dave was ten years old and was a very lazy boy. He had to go to school every day. He didn't like school and didn't want to do much work. His parents are doctors. They hoped that their son would ...
【简答题】Tom was ten years old, and he was a very lazy boy, He didn't like doing any work. He had to go to school of course, but he didn't study hard there and tried to do as little work as possible. His fathe...
【简答题】阅读理解。 Jack was ten years old and he was a very lazy boy. He didn't like doing any work. He had to go to school, of course, but he didn't study hard there and tried to do little work. His father and mo...
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