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【判断题】
在纯净的半导体材料中掺入微量五价元素磷,可形成N形半导体。( )A.
正确
B.
错误
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【简答题】根据句意及所给汉语提示写出单词的正确形式。 1. We are all _____(自豪) of our motherland. It's great. 2. The boy shows great interest in _____(自然) science. 3. Welcome to our city _____(无论何时) you come! 4. No country can afford...
【简答题】请将二十道题的答案全部填入下方答题区域 Choose the word or phrase which best completes each sentence. 1. Catherine was greatly taken ____ by Joan's caprice. A. aback B. aside C. about D. apart 2. There is no evidence tha...
【简答题】根据汉语提示写单词 1. We have sweaters in all colors for ￥50 (每件)! 2. —How old is your uncle? —He's________(二十八)years old. 3. I am a student. She is ____(也)a student. 4. There are ten ____(颜色). 5. I________...
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