关于数据库系统三级模式结构，下列论述中正确的是A．三级模式结构是数据库惟一的一种分级

汽车停车场双向行驶的汽车道宽度应大于（）。

A．4．0m

B．4．5m

C．5．0m

D．5．5m

萝卜储存久了会空心，是因为体内有机物（　　）

A．被光合作用利用

B．被呼吸作用分解

C．被蒸腾作用散失

D．被光合作用分解

阅读理解。

     Some people believe that international sport creates goodwill between the nations and that if

countries play games together they will learn to live together.Others say that the opposite is true:

that international contests encourage false national pride and lead to misunderstanding and hatred.

There is probably some truth in both arguments,but in recent years the Olympic Games have done

little to support the view that sports encourage international brotherhood.Not only were there the

incidents of tragedy involving murder of athletes,but the Games were also ruined by lesser incidents

caused principally by minor national contests.

     One country received its second-place medals with visible anger after the hockey final.There

had been noisy scenes at the end of the hockey match,with the losers objecting to the final decisions.

They were convinced that one of their goals should not have been disallowed and that their opponents'

victory was unfair.Their manager was in a rage when he said,"This isn't hockey.Hockey and the

International Hockey Federation are finished." The president of the Federation said later that such

behavior could result in the suspension of the team for at least three years.

     The American basketball team announced that they would not yield first place to Russia after a

disputable end to their contest.The game had ended in disorder.It was thought at first that the United

States had won by a point,but it was announced that there were three seconds still to play.A Russian

player then threw the ball from one end of the court to the other,and another player popped it into the

basket.It was the first time that the US had ever  lost an Olympic basketball match.An appeal jury

(评审委员会)  debated the matter for four and a half hours before announcing that  the result would

stand.The American players then voted not to receive the silver medals.

     Incidents of this kind will continue as long as sport is played competitively rather than for the love

of the game.The suggestion  that athletes should compete as individuals or in non-national teams might

be too much to hope for.But in present organization of Olympics there is far too much that encourages

aggressive patriotism (爱国主义)．

1．The author thinks that in recent years Olympic Games have________.

A．showed little international friendship

B．greatly encouraged international brotherhood

C．created goodwill between the nations

D．created only misunderstanding and hatred

2．What did the manager mean by saying "This isn't hockey.Hockey and the International Hockey

Federation are finished"?

A．This is not a standard hockey match.

B．The federation would not exist any longer after this match was over.

C．His team would not enter the game in three years.

D．The unfair decision ruined both hockey and the Federation.

3．The basketball match showed that________.

A．aggressive patriotism was displayed in the incident

B．the Russian team should not have taken advantage of the last three seconds

C．the appeal jury was too inefficient in making a decision

D．the American team should have taken the first place

4．The author gives two examples in the 2nd and the 3rd paragraphs in order to show that________.

A．contests often end  in disorder

B．no contests are fair in Olympic Games

C．competition discourages international friendship

D．unfair decisions are common in sports

5．Which statement best summarizes this passage?

A．Athletes should compete as individuals.

B．The organization of the Olympic Games must be improved.

C．Any team that has disrespectful behavior should be suspended.

D．Different teams often have disputes when fighting for the first place.

微机监测系统的DDF板的两端分别连接内侧的DTU和外侧的由通信提供的通道。

《建筑法》及相关建设法规规定，禁止分包单位将其承包的工程再分包，但下列分包中的（）例外。

A.专业分包单位将其承包工程中的非关键工作分包给了同等资质的单位

B.为了赶工期，劳务分包企业将其承包的部分施工作业分包给了同类企业

C.专业分包单位将其承包工程中的劳务作业分包给了劳务分包企业

D.分包工程的发包人将所承包的工程肢解后全部发包给他人