（）则适宜与休闲上衣搭配。 A.牛仔裤 B.西装裤 C.健美裤 D.睡裤

共同共有：是指两个或两个以上的共有人对共有财产享有同等权利并承担同等的责任和义务。 根据上述定义，下面哪一种情况属于共同共有( )

A．某百万富翁死前立下遗嘱，言明他所有的存款及房产折价后，平等地分给他的两个儿子，两个各享有一半财产的继承权

B．某大学的学生宿舍按规定应该每个宿舍住六个人，由于人数原因，最后一个安排的宿舍里只有三个人。后学校给每个宿舍配了一台饮水机，这三个人的宿舍也装了一个

C．某风险投资商投资于某一正在发展的小型企业，并言明该企业以后实行股份制，原企业董事长拥有30%的股份，风险投资商占有70%的股份

D．两个伙伴合伙开办了一家公司，一个负责经营，一个负责开发，但他们在合伙前就以书面形式言明，两人共同拥有这家公司，但是一旦破产欠债，管开发的人不负责还债

阅读理解。

     The private automobile (私家车) has long played an important role in the United States. In fact, it has

become a necessary and important part of the American way of life. In 1986, sixty-nine percent of American

families owned at least one car, and thirty-eight percent had more than one. By giving workers rapid

transportation, the automobile has freed them from having to live near their place of work. This has encouraged

the growth of the cities, but it has also led to traffic problems.

     For farm families the automobile is very helpful. It has made it possible for them to travel to town very

often for business and for pleasure, and also to transport their children to distant schools.

     Family life has been affected (影响) in various ways, The car helps to keep families together when it is

used for picnics, outings, and other shared experiences. However, when teenage children have the use of the

car, their parents can't keep an eye on them. There is a great danger if the driver has been drinking alcohol or

taking drugs, or showing off by speeding or breaking down traffic laws. Mothers of victims (受害者) of such

accidents have formed an organization called MADD (Mothers Against Drunk Driving). These women want to

prevent further tragedies (悲剧). They have worked to encourage the government to limit the youngest drinking

age, Students have formed a similar organization, SADD (Students Against Drunk Driving) and are spreading

the same message among their friends.

     For many Americans the automobile is a necessity. But for some, it is also a mark of social position and for

young people, a sign of becoming an adult. Altogether, cars mean very much to Americans.

1. Which of the following is NOT mentioned in the text?

A. Cars have encouraged the growth of the cities.

B. Cars can bring families together when they go for picnics.

C. Cars have enabled people to live far from their place of work.

D. Cars help city families to transport their children to faraway schools.

2. What has been done to deal with the problem of drunk driving?

A. Patents have paid more attention to their children.

B. Some organizations have been set up against drunk driving.

C. Mothers have tried to persuade their children not to drink alcohol.

D. University students have asked the government to solve the problem.

3. We can infer from the text that _____ in America.

A. it will be more difficult for people to get new cars

B. parents will not allow their children to have their own cars

C. the government will encourage people to use public transportation

D. cars will still be popular though they have caused many problems

公共政策周期

以下（）视为混凝土枕严重伤损。

A.沿轨枕横裂或斜裂长度为枕高1/2-1/3

B.预埋铁座损坏

C.挡肩缺损长度为总长度的1/2-1/3

D.严重网状龟裂和掉快

步进电动机功率驱动单元有单电压驱动、双电压驱动及（）等类型。

A、三电压功率驱动

B、四电压功率驱动

C、触发电压功率驱动

D、高低压驱动