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问题 单项选择题 A型题

由胃黏膜壁细胞分泌的、可与食物中维生素B在胃内结合的内因子是一种（）

A.糖蛋白

B.γ-氨基丁酸

C.多肽

D.脂肪酸

E.脂蛋白

答案

参考答案：A

单项选择题

B


Questionnaire


Read the questions and answer YES or No, then you will find out how good you are.
1. When you don’t understand something, you ask questions.
2. You like listening to older people talk about the past.
3. You think that you can learn something interesting from everyone around you.
4. You are brave enough when you have to talk to people you don’t know.
5. You enjoy reading books about famous people.
6. You always see and talk to different people.
7. You are interested in learning new ways of doing things.
8. You enjoy sharing experiences with friends and learning from people of all ages.
9. You talk a lot about yourself.
10. Even if you are often wrong, you make your own decisions.
11. You hate teaching what you are good at: sports, technology, whatever.
12. Your parents don’t understand you, so you don’t talk to them much.
SCORE NOW!
Score 2 points if you answer YES to each of the first 8 questions, and O if you choose NO.
Score 2 points if you answer NO to each of the last 4 questions, and O if you choose YES.
18—24 You are friendly and open-minded. You make people fell important by listening to what they have to say. You’ll probably succeed in learning all kinds of interesting things. Good for you!
10—16 Remember that every single person you know can teach you something. You will greatly make your life rich and colorful.
0—8 About 400 years ago, a famous writer wrote," No man is an island." This is still true today. Try to be more open and interested in people around you.

The questions are used to test whether you are willing to______．

A．learn from others

B．help other people

C．do all by yourself

D．depend on others
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单项选择题

温度影响化学反应速率的主要原因在于（）。

A.改变了分子的运动速度，从而影响了其碰撞几率

B.改变了反应的活化能

C.改变了反应物的消耗

D.改变了活化分子的百分率
查看答案