蛋白质多肽链中的肽键是通过一个氨基酸的()基和另一氨基酸的()基连接而形成的。

题型:填空题

问题:

蛋白质多肽链中的肽键是通过一个氨基酸的()基和另一氨基酸的()基连接而形成的。

考点:化学工程生物化学生物化学题库
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 阅读理解。

     One day an American called Simon went to London to visit his friend, Rick. Rick told him that his flat

was on the first floor. When he arrived, Simon went straight to the first floor of the  building. But he was

told that there was no Rick on that floor. Do you know why?

     In fact, the British call the first floor of a building the ground floor. The floor above the ground floor is

the first floor, which Americans would call the second floor.

     The story shows that there are a few cultural differences between Britain and America, though the

British and Americans both speak English.

     The British usually hide their feelings. They seldom start a conversation with strangers. For example,

on the train the British often spend their time reading newspapers or books. But Americans are quite

different. They're more active and easier to talk with.

     The British and Americans may use different terms for many things. The British usually use football,

eraser and mail while Americans prefer to use soccer, rubber and post.

1. Simon went to London to            .

A. visit his friend            

B. spend his holiday

C. study English              

D. have a meeting

2.  Rick is            .

A. an American                

B. an Englishman

C. a Japanese                  

D. an Australia

3. According to the passage, the British usually spend their time          on the train.

A. playing cards              

B. talking loudly

C. doing some reading        

D. singing and dancing

4. What does the underlined word "terms" mean in Chinese in the passage?

A. 成果    

B. 学期

C. 会议    

D. 用语

5. What's the best title for the passage?

A. Differences in culture

B. Simon's funny story

C. Information abroad

D. Hiding the feelings

题型:填空题

The canteen is _________ the first floor.[ ]

A. at    

B. in    

C. on

题型:填空题

以下关于企业应该首先建立哪种类型的信息系统的描述中,正确的是()。

A.应该先建立决策支持系统,然后再建立管理信息系统

B.应该首先建立管理信息系统,然后再建立决策支持系统

C.管理信息系统和决策支持系统可以同时建设

D.先建立哪种类型的信息系统,取决于企业的具体情况

题型:填空题

原子能释放的方式有三种:原子核衰变、原子核裂变和()。

题型:填空题

下列说法中正确的是( )。

A.只要将高级程序语言编写的源程序文件(如try.c) 的扩展名更改为.exe,则它就成为可执行文件了

B.高档计算机可以直接执行用高级程序语言编写的程序

C.源程序只有经过编译和连接后才能成为可执行程序

D.用高级程序语言编写的程序可移植性和可读性都很差

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