关于转化作用叙述错误的一项是()
A.人为供给外源DNA
B.可自动获取外源DNA
C.可获得新的遗传表型
D.可发生外源DNA的整合
E.自然界发生的转化效率高
参考答案:E
用所给词的适当形式填空。
1. Two hours is a long time _____ (stay) still.
2. They decided _____ (go) to the cinema.
3. I have something nice _____ (eat).
4. _____ (watch) the football match, I can go to the stadium.
5. It's easy _____ (see) why they call it the city that never sleeps.
6. Both coats look nice on me. I really don't know which _____ (choose) .
7. The waiter was made _____ (apologize) to the guest.
8. I'll do whatever I can _____ (improve) my English.
由于安装环境的限制,FTTBONU设备可以不接保护地线直接开通使用。