试题与答案

对于中硬岩周边炮眼痕迹保存率应（）。 A．≤80% B．≥80% C．≤70% D．

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题型：单项选择题

题目：

对于中硬岩周边炮眼痕迹保存率应（）。

A．≤80%

B．≥80%

C．≤70%

D．≥50%

答案：

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参考答案：A

考点：公路工程试验检测员考试隧道隧道
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题型：阅读理解

阅读理解。

     "I sometimes get up at three or four in the morning and I surf the net."

     "I often check my e-mail forty times a day." 

     "I often spend more than three hours during one time on the net."

     "I spend more time in chat rooms than with my real-life friends."

     Do you know any people like these? They are part of a new addiction called Internet addiction. Internet

addicts spend at least thirty to forty hours online every week. The use of the Internet can be an addiction like

drug use. People lose control of the time they spend on the Internet.

     For example, one college student was missing for several days. His friends were worried, and they called

the police. The police found the student in the computer lab: he was surfing the net for several days straight.

     Studies show that about 6% to 10% of Internet users become addicted. And people worry about the teens

because the Internet is changing the playing field for some of them. They spend more time in cyberspace than

in the real world of friends and family.

     Is "surfing the net" a hobby or an addiction for you? You may have a problem if you have these symptoms: 

     ● You do not go to important family activities or you do not do school work because you like to spend

hours on the Internet. 

     ● You can't wait for your next online time. You plan to spend a short time online, but then you spend

several hours. 

     ● You go out with your friends less and less.

1. What does the beginning of the passage tell us?

A. How to become an Internet addict.

B. What an Internet addict usually does.

C. Where to find an Internet addict.

D. Why to write this passage.

2. How does the writer describe the addicts' use of Internet?

A. It is something like keeping drugs.

B. It is a way of producing drugs.

C. It is like taking drugs.

D. It is terrible to imagine.

3. Why do people worry about the teens?

A. Because the teens are wasting too much money.

B. Because they used to work on the Internet.

C. Because the playing field of the teens will disappear.

D. Because more and more of the teens will become addicted to the Internet.

4. The example in the passage shows that _____.

A. Internet problems are more serious among college students

B. Internet addicts usually stay in the computer lab without sleep

C. some of the Internet users have already been seriously addicted

D. the police often help to find those Internet addicts

5. What is the writer trying to tell us at the end of the passage?

A. Don't be addicted to the Internet.

B. Go to family activities more often.

C. Do things as you have planned.

D. Stay with your parents as often as possible.

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