含有两个羧基的氨基酸是 [ ] A.Lys B.Asn C.Gln D.Glu

题型:选择题

问题:

含有两个羧基的氨基酸是 [ ]

A.Lys

B.Asn

C.Gln

D.Glu

E.Cys

考点:氨基酸
题型:选择题

阅读理解。

    Jack worked in an office in a small town. One day his boss said to him. "Jack, I want you to go to

Machester, to an office there, to see Mr Brown. Here's the address" Jack went to Manchester. When he

walked out of the railway station, he thought, "The office isn't far from the station. I'll find it easily."

    But after an hour he was still looking for it, so he stopped and asked an old woman. She said, "Go straight

along this street, turn to the left at the end, and it's the second building on the right." Jack went and found it.

    A few days later he went to the same city, but again he did not find the office, so he asked someone the

way. It was the same old woman! She was astonished and said, "Are you still looking for that place?"

1. Manchester is the name of           . [ ]

A. a city

B. a building

C. a country

D. a street

2. The boss wanted Jack to           . [ ]

A. go to Machester

B. go to his office

C. send for Mr Brown

D. visit Mr Brown

3. How did Jack go to Manchester? [ ]

A. By bus

B. By train

C. By car

D. By plane

4. Jack left the station and           . [ ]

A. found the office himself

B. was led to the office

C. asked where Mr Brown was

D. didn't know where he was

5. From the story we know           . [ ]

A. Jack had a bad memory

B. it was really difficult to find that place

C. Jack had never been to Manchester

D. Jack was still looking for that place

题型:选择题

在竞争合作中漫画的做法[ ]

A.是我们在与别人竞争过程中的常见的做法

B.是错误的,属于对对方的诋毁

C.这样的做法不利于双方的提高和发展

D.是处于劣势的一方战胜对方的法宝

题型:选择题

用于治疗妊娠呕吐、脂溢性皮炎等

A.维生素A醋酸酯
B.维生素B6
C.维生素C
D.维生素K3
E.维生素E

题型:选择题

属于外币零辅币的是()

A.USD200

B.JPY900

C.GBP3.00

D.HKD5.00

题型:选择题

上下文图是DFD的一个特定层次,被用来说明系统的上下文环境,确定系统的边界。

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