有“欧洲的牧场和食品库”之称的国家是____ ___。人均水产品产量居世界首位的

题型:填空题

问题:

有“欧洲的牧场和食品库”之称的国家是____   ___。人均水产品产量居世界首位的国家是_______ ___。

考点:欧洲西部
题型:填空题

电解水制取H2和O2时,为了增强溶液的导电性,常常要加入一些电解质,最好选用下列物质中的 [ ]

A.HCl     

B.NaOH     

C.NaCl     

D.CuSO4

题型:填空题

可用于诊断皮肤结核病的实验室检查方法有()。

A.组织病理学检查

B.结核菌素纯蛋白衍生物试验

C.胸部X线检查

D.细菌学检查

题型:填空题

某受压钢筋混凝土柱,高3m,两端固定,其临界力为100kN。若将此构件改为两端铰支,则其临界力为()kN。

A.25

B.50

C.200

D.400

题型:填空题

阅读理解。

     Drunken driving-sometimes called America's socially accepted form of murder-has become a national

epidemic (流行病). Every hour of every day about three Americans on average are killed by drunken

drivers, adding up to an incredible 250,000 over the past ten years. A drunken driver is usually referred

to as one with 0.10-blood alcohol content or roughly three beer glasses of wine or shots of whisky drunk within two hours. Heavy drinking used to be an acceptable part of the American manly image and judges were lenient in most courts, but the drunken killing has recently caused so many well-publicized tragedies, especially concerning young children, that public opinion is no longer so tolerant (忍受).

     Twenty states have raised the legal drinking age to 21, reversing a trend (逆转潮流) in the 1960s to

reduce it to 18. After New Jersey lowered it to 18, the number of people killed by 18-20-year-old drivers more than doubled, so the state recently upped it back to 21.

     Reformers, however, fear raising the drinking age will have little effect unless accompanied by

educational programs to help young people to develop "responsible attitudes" about drinking and teach

 them to resist peer pressure to drink.

     Though new laws have led to increased arrests and tests in many areas already, to a marked drop in

accidents, some states are also punishing bars for serving customers too many drinks. A bar in Massachusetts was fined for serving six or more double brandies to a customer who was "obviously drunk" and later drove off the road, killing a nine-year-old boy.

     As the accidents continue to occur daily in every state, some Americans are even beginning to speak

well of the 13 years national prohibition (禁令) of alcohol that began in 1919, which President Hoover

called the "noble experiment". They forgot that legal prohibition didn't stop drinking, but encouraged

political corruption (腐败) and organized crime. As with the booming drug trade generally, there is no

easy solution.

1. What can be inferred from the fact of the traffic accidents in New Jersey?

A. Young drivers were usually bad.      

B. Drivers should not be allowed to drink.

C. Some drivers didn't surprise the legal drinking age.

D. The legal drinking age should be raised.

2. The underlined word "lenient" in the first paragraph means          .

A. merciful

B. cruel

C. serious

D. determined

3. As regards drunken driving, public opinion has changed because        .

A. judges are no longer lenient

B. new laws are introduced in some states

C. drivers do not appreciate their manly image

D. the problem has attracted public attention

4. Which of the following statements best shows the writer's opinion of drunken driving?

A. It is difficult to solve this problem.    

B . It may lead to organized crime.                        

C. The new laws can stop heavy drinking    

D. There should be no bars to serve drinks.    

题型:填空题

欲标注零件组合体内部结构尺寸时,最好采用()。

A.主视图

B.俯视图

C.左视图

D.剖视图

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