关于女性生殖器黏膜上皮，正确的是（） A. * * 黏膜上皮为复层鳞状上皮 B.子宫颈

蜡型包埋完成后，铸圈在室温中放置一段时间后，便可对铸圈进行烘烤，焙烧和铸造。

铸型烘烤时正确的放置方式是（）

A.烧铸口始终朝向上方

B.烧铸口始终朝向下方

C.烧铸口先朝向下方，待熔模熔解后，朝向上方

D.铸型应尽可能放置在电烤箱靠门的部位，以便拿取

E.烧铸口的朝向并不重要

如图所示，水平方向的匀强电场场强为E，有一带电物体P自O点竖直向上射入，它的初动能E_K0=4J，当P上升至最高点M时，其动能E_Km=6J，那么当它折回通过与O在同一水平线上的O′时，其动能E_K为（    )

A．10J

B．12J

C．24J

D．28J

How Good Are US Drivers?

The CBS-TV“National Drivers’ Test”，showed that many US drivers have a lot to learn.Here’s why.

CBS picked 1799 sample drivers to take the test in TV studios in New York，Philadelphia，Chicago，and Los Angeles.More than two out of five of the drivers failed the test.And the average score was the lowest passing mark—51 points out of a possible 80.

Chicago drivers did best with an average of 53 points.Los Angeles drivers came next with 52 points.New York and Philadelphia drivers got 50 points—a failing score.Drivers with 50 points or less were rated“poorly informed”by the judges.

Here are some of the test results:

1.Are men drivers better informed than women ones?

Yes.Men averaged 52 points.Women got an average of 49.

2.Are older drivers better informed than younger drivers?

No.Drivers under 26 averaged 52 points.Drivers from 27 to 45 averaged 51.Drives over 45 failed with a 48-point average.

3.Does education make a difference?

Yes.College graduates averaged 52 points.High school graduates averaged 50.Those without high school diplomas(毕业证) got 48.And people who had taken driver education courses scored an average of 53 points—three more than those who hadn’t.

4.Does driving experience make a difference?

Yes.Drivers with three or more years of experience averaged 51 points.Drivers with less experience averaged 49.

Here are some surprising facts brought out by the test:

1.More than one out of three drivers did not know that a blinking red light means a full stop.

2.Three out of ten drivers did not know that an octagonal(eight-sided)sign means stop.

3.More than two out of three drivers did not know what to do when being“tailgated(追尾)”.

The answer:slow down，drive to the right，and let the driver behind pass.

The results of the test were turned over to the National Safety Council(委员会).They will help future safety planning.

小题1:The author’s purpose is to_________.

A．prove that men are better drivers than women

B．give you safe driving directions

C．tell you the results of a national drivers’ test

D．require you to get an education小题2:From the information in this article，which of the following is TRUE?

A．Older drivers are better informed than younger drivers.

B．Experience makes a difference among drivers.

C．Most drivers failed the test.

D．Most people don’ t know what a blinking red light means.小题3:The test covered the following areas about drivers except_________.

A．education

B．years of driving experience

C．sex

D．health小题4:Which of the following as a group was rated“poorly informed”by the judges?

A．Men.

B．High school graduated drivers.

C．Drivers from 27-45 years of age.

D．Drivers with 3 or more years of experience.

能养心阴的药物是（）

A.人参

B.玉竹

C.麦冬

D.百合

E.黄精

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文字资料一

2004年底，全球估计共有艾滋病病毒感染者( )。

A．3860万人

B．3630万人

C．3730万人

D．3450万人