从某真核细胞中提取出大量核糖体，放入含下列一组有机物（其中的氮原子已被“N”标记）的培养液里，假设培养液里含有核糖体完成其功能所需的一切物质和条件，请回答： ①NH2﹣CH2﹣COOH②NH2﹣CH

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从某真核细胞中提取出大量核糖体，放入含下列一组有机物（其中的氮原子已被“N”标记）的培养液里，假设培养液里含有核糖体完成其功能所需的一切物质和条件，请回答：

①NH₂﹣CH₂﹣COOH②NH₂﹣CH₂﹣CH₂OH③NH₂﹣CH（COOH）﹣CH₂﹣COOH④NH₂﹣CH（NH₂）﹣CH₂﹣COOH⑤NH₂﹣CH（COOH）﹣CH₂SH

上一题下一题 0.0难度选择题更新时间:2011-01-05 11:07:16

From:	Tina
To:	Li Ming
Subject:	I am coming!
Hi Li Ming, How is everything? I'm very happy that the holidays are coming. I want to go to your hometown to visit you in February. Is this good? What's the weather like in your hometown? How can I travel around? And what should I take with me? I know Spring Festival comes in February this year, and it is a very important festival for you. How do you celebrate it? I'm looking forward to your reply. Best wishes to your parents! Yours, Tina

要求：①请按电子邮件的格式来完成整个邮件；②邮件中不能出现真实姓名、校名等相关信息。③词数：约110词（不含开头、结尾部分）

From:	Tina
To:	Li Ming
Subject:	Welcome!
Hi Tina, I'm so glad you are coming to my hometown. I hope this may help. Yours, Li Ming