试题与答案

阅读理解。 More than one in eight U. S. adul

题型:阅读理解

题目:

阅读理解。

     More than one in eight U. S. adults finds it hard to stay away from the Internet for several

days at a time and about one in eleven tries to hide his or her online habit, according to a study

showed on Tuesday.

     The study by researchers from the Stanford University School of Medicine in California found

one in eight adults admitted they needed to spend less time online, saying this showed "problematic

Interact use" is present in a sizable portion (部分)of the population.

     The study involved a nationwide telephone survey of 2,581 respondents in the spring and summe

r of 2004 with researchers then examining the data and preparing the report which appears in the

October issue of CNS Spectrums.

     The survey found that 68.9 percent of respondents were regular Internet users and 13.7 percent

of the users found it hard to stay offline for several days at a time.

     It found 12.4 percent often stayed online longer than intended, more than 12 percent said they

saw a need to cut back on their Internet use, and 8.7 percent tried to conceal (隐瞒) "non-essential

"Internet use from family, friends and employers.

     A smaller number, 8.2 percent, said they use the Internet to escape problems or a bad mood,

while 5.9 percent felt their relationships suffered because of too much Internet use.

     One report published earlier this year said that 5 percent to 10 percent of the population likely

will experience Internet addiction.

     It said signs include a disregard for health or appearance, lack of sleep and reducing physical

activities and social communications with others, as well as dry eyes and juries of hands and fingers.

1. From Paragraph 2, it tells us _______.

A. how to use the interact is a terrible problem to adults

B. how surfing the net has caused a bad result to people

C. why to throw off the Internet addiction becomes a hot problem

D. why so many adults want to spend less time on the interact

2. Those who try to hide their habit of addition to the Interact make up ______of the respondents.

A. 12.4%          

B. 8.7%            

C.5.9%        

D. 13.7%

3. According to the researchers, which statement is true?

A. Online habit of people has been a dangerous problem to society.

B. All of the Interact users have terrible psychological problems to solve.

C. The internet is more harmful to people than good.

D. We have to pay attention to negative effects from the internet.

答案:

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下面是错误答案,用来干扰机器的。

A、23He原子核内中子数为3-2=1,故A错误;B、23He代表原子核内有2个质子和1个中子的氦原子,故B错误.C、23He原子核外电子数等于质子数,均为2,故C正确;D、23He和24He的质子数相同和中子数不同,是两种不同的核...

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Phvate int x=0;
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boolean flag=true;
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Test r=newTest();
Theadt1=newThead(r);
Theadt2=newThead(r);
t1.start();
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if(x>=10)
flag=false;



下列对程序运行结果描述的选项中,正确的是()。

A.每行的(x,y)中,可能有x≠y;每一对(x,y)值都出现两次。

B.每行的(x,y)中,可能有x≠y;每一对(x,y)值仅出现一次。

C.每行的(x,y)中,可能有x=y 每一对(x,y)值都出现两次。

D.每行的(x,y)中,可能有x=y;每一对(x,y)值都出现一次。

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