问题
名词解释
F′因子
答案
参考答案：
整合在细菌染色体上的F因子偶尔环出时不够准确，携带了部分宿主染色体，这样的F因子叫F′因子。
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F′因子
参考答案：
整合在细菌染色体上的F因子偶尔环出时不够准确，携带了部分宿主染色体，这样的F因子叫F′因子。
| 用所给词的适当形式填空。 | |
2. David _____ born in China. 3. My brother enjoys _____ pictures. 4. They are from America.They _____ English. 5. He _____ to the teacher carefully (仔细地) in class. 6. he _____ swimming? 7. He _____ football after class. 8. Jim and Tom _____ hard at school. 9. Sue _____ long hair. 10. I _____ a swimsuit when I go swimming. |