“重量”的单位名称是（）。 A.斤 B.千克 C.牛顿

男性．30岁，2年前出差步行时自觉出冷汗心悸，然后倒地四肢抽搐，以后经常发生，工作尊效率差，本次发作有意识障碍。

最适当的检查是（）

A.脑电图

B.腰穿查脑脊液

C.血常规

D.血糖

E.ECG

60钴的半衰期为()

A．1590年

B．33年

C．5．3年

D．74天

E．2．7天

增量式光轴编码器一般应用（）套光电元件，从而可以实现计数、测速、鉴向和定位。

A．一

B．二

C．三

D．四

Thanks to the Web, We’re Alone Together and Loving it

There's a professor, Barry Wellman, at the University of Toronto in Canada who has come up with a term to describe the way a lot of us North Americans interact these days. And now a big research study confirms it.

Barry Wellman's term is "networked individualism." It's not the easiest concept to grasp. In fact, the words seem to contradict each other. How can we be individualistic and networked at the same time? You need other people for networks.

Here's what he means. Until the Internet and e-mail came along, our social networks involved flesh-and-blood relatives, friends, neighbors, and colleagues at work. Some of the interaction was by phone, but it was still voice to voice, person to person, in real time.

But the latest study by the Pew Internet and American Life Project confirms that for a lot of people, electronic interaction through the computer has replaced a great deal of social interchange. A lot of folks Pew talked with say that's a good thing, because of concerns that the Internet was turning us into hermits who shut out other people in favor of a make-believe world on flickering computer screens.

To the contrary, the Pew study discovered the Internet has put us in touch with more real people than we'd have ever imagined. Helpful people, too. We're turning to an ever-growing list of cyber friends for advice on careers, medical crises, child-rearing, and choosing a school or college. About 60 million Americans told the Pew that the Internet plays an important or crucial role in helping them deal with major life decisions.

So we networked individuals are pretty tricky: We're keeping more to ourselves, while at the same time reaching out to more people, all with just the click of a computer mouse!

小题1:The Pew study was conducted in _____.

A．The United States

B．Canada

C．The U.S. and Canada

D．Europe小题2:Which of the following has happened since the invention of the Internet and email?

A．People are talking on the phone more than ever.

B．Interaction through the computer has replaced a lot of person to person interaction.

C．Americans are turning into hermits.

D．Sixty million Americans have bought computers.小题3:Which of the following was NOT one of the discoveries of the Pew study?

A．The Internet has put us in touch with more people than expected.

B．People use the Internet to get advice on careers, medical problems, and other questions.

C．For many Americans, the Internet plays an important role in helping them make important decisions.

D．“Internet addiction” is a growing problem among people who use computers.小题4:What does the bolded words “reach out” in the last paragraph mean?

A．Connect with.

B．Play a trick.

C．Make a decision.

D．Stay alone.

直立褶皱的两翼，其中一翼岩层产状一定直立。