ZK3-A型电空转辙机通以（）Mpa空气，其动作时间不大于0.6s。A.0.44 B

在棱长为1的正方体AC₁中，点P为侧面BB₁C₁C内一动点(含边界)，若动点P始终满足PA⊥BD₁，则动点P的轨迹的长度为________．

对长度为n的线性表进行顺序查找，在最坏的情况下需要比较的次数为( )。

A．125

B．n/2

C．n

D．n+1

下列各句中，加粗的成语使用恰当的一句是 [ ]

A．他不会唱歌，你偏要他上台表演，这不是强人所难吗？

B．有些同学写的作文，文不加点，字迹潦草，阅读这样的文章，真叫人头疼。

C．微雕艺术家别树一帜，能在一根头发一样细的东西上，得心应手地随意雕刻。

D．便民箱、井盖板、金属垃圾桶被盗，名草名花，不胫而走，这些发生在城市里的不文明现象，令人气愤。

阅读理解。

     British paychologists have found evidence of a link between excessive (过度的) Internet use and

depression, a research has shown.

     Leeds University researchers, writing in the Psychopathology journal, said a small part of Internet

users were classed as Internet addicts and that people in this group were more likely to be depressed

than non-addicted users.

     The article on the relationship between excessive Internet use and depression is from a

questionnaire-based study of 1,319 young people and adults.

     The respondents answered questions about how much time they spent on the Internet and what they

used it for; they also complete the Beck Depression Inventory---a series of questions designed to

measure the seriousness of depression.

     The six-page report,by the university's Institute of Psychological Science, said 18 of the people who

complete the questionnaire were Internet addict."Our research indicates that excessive Internet use is

associated with depression, but what we don't know is which comes first-are depressed people drawn

to the Internet or does the Internet cause depression?" the article's lead author Dr Catriona Morrison

said."What is clear is that, for a small part of people, excessive use of the Internet could be warning signal

for depressive tendencies."

     The age range of all respondents was between 16 and 51 years, with an average age of 21.24. The

average age of the 18 Internet addicts was 18.3 years. By comparing the levels of depression within this

group to that within a group of 18 non-addicted Internet users, researchers found the Internet addicts

had a higher chance of developing depression than non-addicts. They also discovered that addicts spent

more time visiting sexually pleasing website, online gaming sites and online communities.

     "The public speculation (推测) was further proved by this study. That's to say, over-engaging in

websites which serve to replace normal social function might be linked to psychological disorders like

depression and addiction," Morrison said."We now need to consider the wider social influence of this

relationship and clearly prove the effects of excessive Internet use on mental health."

1. Internet addicts are people who ______ according to the passage.

A. use the Internet more than enough     

B. feel depressed when using the Internet

C. seldom connect to the Internet        

D. feel depressed without the Internet

2. What is confirmed by the study according to the passage?

A. Depression leads to excessive use of Internet

B. Depression results from excessive use of Internet

C. Excessive use of internet usually accompanies depression

D. Excessive use of internet is usually earlier to depression

3. It is thought by the public that online communities______.

A. can never replace normal social function

B. are intended to replace normal social function

C. are associated with psychological disorders

D. shouldn't take the blame for psychological disorders

4. According to Dr Catriona Morrison, the public speculation________.

A. lacks scientific evidence      

B. helps clarify their study

C. finds a theoretical basis      

D. has little scientific value

职业生涯规划工作是现代人力资源开发与管理工作的重要组成部分。