原子间通过共用电子对所形成的化学键叫（）。A、离子键 B、共价键 C、氢键 D、金属

Anthropology is the study of human beings as creatures of society. It (1) its attention upon those. physical characteristics and industrial techniques, those conventions and values, which (2) one community from all others that belong to a different tradition.

The distinguishing mark of anthropology among the social sciences is that it includes for serious study other societies (3) our own. For its purposes any social (4) of mating and reproduction is as significant as our own. To the anthropologist our customs and those of a New Guinea tribe are two possible social schemes for (5) a common problem, and in so far as he remains an anthropologist he is (6) to avoid any weighting of one (7) the other. He is interested in human behavior, not as it is shaped by one tradition, our own, but as it has been shaped by any tradition (8) He is interested in a wide (9) of custom that is found in various cultures, and his object is to understand the way in which these cultures change and (10) , the different forms through which they express themselves and the (11) in which the customs of any peoples function in the lives of the (12) .

Now custom has not been commonly regarded as a (13) of any great moment. The inner workings of our own brains we feel to be uniquely (14) of investigation, but custom, we have a way of thinking, is behavior at its most commonplace. (15) , it is the other way round. Traditional custom is a mass of detailed behavior more astonishing than (16) any one person can ever evolve in individual actions. Yet that is a rather (17) aspect of the matter. The fact (18) first rate importance is the predominant role that custom (19) in experience and belief, and the very great varieties it may (20)

11（）

A.manner

B.means

C.case

D.context

阅读下面的短文，把短文中5个画线部分的句子翻译成中文 。

      1. Over l60 years ago, there were no stamps in the world. People had to pay a lot of money for

receiving a letter.

     One winter day the north wind was blowing hard. 2. A postman came to a small village in

England.

     "Here's a letter for Alice," he shouted.

     "I'm Alice,"a girl said, The postman gave her the letter.

     Alice looked at the envelope (信圭寸) for a minute and gave it back to the postman.

     3. "I'm sorry. I don't have enough money for it. "

     Then a man came up and said to the postman. "I'll pay for Alice's letter. "

     "No, thank you. "said the girl. 14. There's nothing inside. "

     "Really?"asked the man,"How do you know that?"

     "This letter is from Tom. Look, sir. This cross in the corner means he is well, and this circle

means he has found work. "

      The man was Sir Rowland Hili. He could not forget Alice and the letter. He decided to do some

thing about it. He knew it wouldn't be easy.

     5. About twenty years later the first stamp in the world began to be used in 1840. This stamp was

the "Penny B1ack".

1.                                                            

2.                                                            

3.                                                            

4.                                                            

5.                                                                 

关于细菌生长的环境条件，不正确的是（）

A.二氧化碳对某些细菌的初分离是必需的

B.各类细菌对温度的要求不一

C.所有细菌最适pH为7.2～7.6

D.某些细菌须在微需氧的环境中生长

E.细菌的生长繁殖对pH、温度和气体等都有一定要求

根据汉语提示完成句子，每空一词。

1. 我今天有太多的工作要做。  

    I have _____ _____ work to do today.

2. 汤姆经常穿一双运动鞋。  

    Tom  often  wears _____ _____ _____ sports shoes.

3. 今年年底，我的女儿将成为一名医生。  

    My daughter will become a doctor _____ _____ _____ _____ this year.

4. 孩子们坐在桌子旁。

    The children are sitting _____ _____ _____.

5. 我们通常在周末去购物。  

    We usually go shopping _____ _____ _____.

6. 他们用英语说什么呢？  

    What are they talking about _____ _____?

7. 我的桌子在教室的前面。  

    My desk is _____ _____ _____ _____ the classroom.

8. 他仍在住院，但已脱离了危险。

    He is still _____ _____, but out of danger.

9. 我们可以用很多方法来完成这项工作。  

    We can finish the work _____ _____ _____.

10. 我每天走路去上学。  

      I go to school _____ _____ every day.

11. 我的朋友们这周正在度假。

      My friends are _____ _____ this week.

12. 苏珊出生在1980年5月1日的晚上。  

      Susan was bom _____ _____ _____ _____ May lst, 1980.

13. 我一点也不喜欢吃水果，但我喜欢吃蔬菜。  

      I do _____ like fruit _____ _____, but I like vegetables.

14. 当我进来时，他正在用餐。

      He is _____ _____ when I come.

15. 在回家的路上，我买了些吃的。  

      I buy some food _____ _____ _____ home.

调车作业（包括机车车辆整备作业）发生冲突或脱轨造成直接经济损失（）万元及以上构成大事故。《事规》36页2.3.2条第二款2项

A、200

B、300

C、400

D、100