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【单选题】
下列关于原核生物翻译的描述,错误的是( )。A.
起动阶段核糖体小亚基先与mRNA结合
B.
合成肽键无需消耗GTP
C.
肽链延长阶段分为进位、转肽、移位三个步骤
D.
只有一种释放因子即可识别3种终止密码子
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【简答题】Dear editor, Mary is my friend and she is a very good-hearted girl. She’s always the first to help out others. But her habits make me mad sometimes and she just won’t change her ways. For most situati...
【简答题】阅读理解。 Mary is a little girl. She is only five years old. She is not at school. She doesn't know how to read or write. But her sister Joan is a school girl. She is ten. She knows how to read and write...
【简答题】阅读短文，选择正确答案。 Mary is a little girl. She is only five, she does not go to school, and, of course, she doesn't know how to read and write. But her sister, Kate, is a school girl. She's ten. One day, Kat...
【简答题】Mary is an French girl. She is now in Beijing with her parents. Mary doesn’t know much Chinese. But she is trying to learn and speak it. She often speaks Chinese to her Chinese friends, but they don’t...
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