选择萃取剂将碘水中的碘萃取出来，这种萃取剂应具备的性质是 [ ] A．不溶于水，

I began to send my first e-mail when I was 17. I discovered Google 5 years later. Now, I use the Internet all the time. Internet has become so popular that 90 percent of 12-to-17-year-olds in the United States use the Internet, according to one recent survey, and about half of those kids use it every day. They visit chat rooms and send e-mails. They go to Websites to get information for homework.

“Kids are now living in a virtual(虚拟的) world,” says Greenfield, “As the Internet is becoming more and more important for our life, we should worry about one question: Is the Internet good or bad for kids?”

“It’s X to answer the question because the Internet involves so many things,” says Justine, a media expert at Northwestern University. “They include networked computer games, news about politics, instant messaging and e-mails to your grandmother. ” So, more and more studies shows that the online world can be helpful in some ways and dangerous in others.

“Although it’s not easy to tell whether it’s good or bad,” says Justine, “the Internet, at least, is very useful and can be used widely by everyone in the world. ”

1. What percentage of American 12-to-17-year-olds use the Internet every day?

A. About 45%        B. About 50%         C. About 80%        D. About 90%

2.. Greenfield _______.

A. is an expect from Northwestern University

B. wants to stop all the kids from using the Internet

C. is worrying about whether the Internet is good or bad for kids

D. thinks that the Internet is good or bad for kids

3. “X” in the passage should be the word “_______”.

A. possible          B. difficult            C. easy             D. good

4. Which is the best title of the passage?

A. Don’t Use the Internet                        B. Kids and Emails

C. Is the Internet Good or Bad                    D. Two Experts from Universities

争辩到底是男性还是女性更优越，哪一性别的人是“范本”，这样的思路是陷入了（）的漩涡。

A.本质主义

B.形式主义

C.性别主义

D.反本质主义

二次接线作业应遵守技术人员的安全技术交底内容应落实到每个（）上。

A.作业人员

B.监护人

C.负责人

D.接线端子

失神的表现是（）

A.面色荣润，含蓄不露

B.面色少华，精神不振

C.面色无华，反应迟钝

D.喃喃自语，哭笑无常

E.突然言语不休，想见亲人，但烦躁不安

清燥救肺汤中所用的养阴药是（）

A.当归、生地、胡麻仁

B.阿胶、麦冬、胡麻仁

C.阿胶、麦冬、生地、胡麻仁

D.阿胶、麦冬、白芍、当归

E.玄参、生地、麦冬、白芍