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问题 单项选择题

凡AUG都（）

A.是蛋白质合成的起始信号

B.是蛋白质合成的终止信号

C.编码蛋氨酸或甲酰蛋氨酸

D.编码赖氨酸或羟赖氨酸

E.编码脯氨酸或羟脯氨酸

答案

参考答案：C

解析：AUG是蛋白质合成的起始密码子，同时在原核生物中编码甲酰蛋氨酸，在真核生物中编码蛋氨酸，不仅如此，AUG还在肽链中间编码蛋氨酸，所以选A是不完全的故而选C。

阅读理解
Three students are giving their opinions(看法) about what a good friend should be like.
 
Cindy
I think a good friend should be honest(诚实的). That’s more important than any other thing. And it is where a real friendship starts. If a friend isn’t honest, he may lose his friends’ trust.
 
Jerry
I think a good friend has to be generous(慷慨的). Here being generous doesn’t mean he has to give his friends his lunch money or his clothes. It means he should share his ideas and feelings with his friends. In fact, his friends can know him better in this way.
 
Mary
In my opinion, a good friend should understand his friends. When there’s something wrong between him and his friends, he must put himself in his friends’ place and think more for his friends.
小题1:What does the underlined (划线的) sentences mean?
A．To be honest is the most important.
B．To be honest is as important as other things
C．To be honest is not very important.
D．Honest people get more things than others.
小题2:What does the underlined word “trust” mean?
A．夸奖B．批评C．理解D．信任
小题3:Jerry would like to make friends with people who _______
A．give him lunch moneyB．know him very well
C．tell him their ideas and feelingsD．give him some clothes
小题4:Mary thinks friends should _________
A．often visit each otherB．often go to different places
C．understand each otherD．help each other
小题5:Which of the following is NOT true?
A．The three people are talking about what they think a good friend should be like.
B．Cindy thinks to be honest is the base(基础) of a good friendship.
C．Mary would like to make friends with people who think more for others.
D．Being generous means being very clever.
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判断题

严禁向本行在职员工发放个人经营贷款，但可以发放个人信用贷款。（）
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