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【单选题】
以下哪种情况需要利用选择性培养基分离法:A.
从土壤中分离细菌
B.
从啤酒中分离酿酒酵母
C.
从面酱中分离霉
D.
从空气中分离百日咳杆菌
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【简答题】用所给动词的适当形式填空。 1. He _____ (be) born in 2002. 2. How long did he _____ (hiccup)? 3. I looked carefully but _____ (see) nothing. 4. Mike often _____ (go) swimming when he was young. 5. Mozart _____ (sta...
【简答题】改错题。 ( )1. On October, 2006, they toured Poland and enjoyed themselves . A B C D ( )2. While was still a small boy , I became well-know...
【简答题】完形填空。 Beethoven was one of the greatest musicians in the world. He was born in 1770 and 1 in 1827. Beethoven's father was a singer. 2 the boy was only four, his father decided to make him a 3 . So ...
【简答题】阅读理解 Shane Thomas is a 10-year-old pianist from England. He's being called the next Mozart because of his amazing abilities. He has only been having piano lessons for four months, and practices four h...
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