试述纤维在非织造材料中的作用。

小小变色龙。

禁 jīn(       ) 通 tōng (      )   澄chéng (       )    解 jiě(       ) 

     jìn(       )      tòng (      )         dèng (       )        xiè(       )

在小组工作的后期成熟阶段，社会工作者要根据小组活动及组员的需要，做好信息的提供、资源的提供及链接工作，以便组员自己整合和运用好这些信息与资源，此时社会工作者扮演( )角色。

A．资源发掘者

B．资源链接者

C．信息、资源的提供者和链接者

D．资源发掘者和能力促进者

阅读理解

     The Ministry of Health has called for more awareness from the public on the mental health of the

young,as part of efforts to mark World Mental Health Day.

     More than 15 percent of the Chinese youth have been found with mental problems,and about 30

million young people under 17 are suffering from depression,the Shanghaibased Wenhui Daily reported.

     The World Health Organization estimated that before 2020,the rate of children with mental problems

will increase to 50 percent,and mental problems will become a major factor behind death and illness in

the young worldwide.

     Deng Xiaohong,the spokesperson for the Beijing Municipal Health Bureau,said rapid social change is

one of the reasons behind the rising number of youngsters with psychological problems.

     If these mental diseases are not addressed on time,occurrence of crime,drugtaking and other dangerous behavior is expected to rise.

    Experts said mental disease could be caused by many factors,such as the inability to handle

interpersonal relations well,unstable emotions and pressure from the overload of study. A number of

experts have also said the onechild policy is another reason leading to poor mental health in the young.

     Children were said to be too "spoiled" and "selfish" in onechild families. Schools in many cities were

reported rolling out measures to help students maintain their mental wellbeing. Yin Jingmiao,a teacher of

the Beijing No. 105 Middle School,told China Daily that the school invites psychologists to provide

counseling to students three times a month. "Students can be arranged to have 40minute counseling

sessions," Yin said.      The school also gives lectures on mental health to senior grade students before

they take the national college entrance exams,to help ease any anxiety arising from the tests.

1．What is the purpose of the passage?

A．To urge awareness on mental health of the young.

B．To give the details of the problems the Chinese youth are facing today.

C．To recommend that schools should invite more psychologists to help solve the mental

       problems among the youth.

D．To show us the causes of the mental problems among students.

2．The underlined word "addressed" in the fifth paragraph most probably means ______.

A．talked about  

B．dealt with    

C．satisfied    

D．introduced

3．From the passage we can know that the causes of mental problems are mainly the

      following EXCEPT ________.

A．onechild policy

B．lack of ability to handle interpersonal relations well

C．lack of special training in mental health

D．heavy burden from study0

4．Which of the following statements is true according to the passage?

A．By 2020,about 50 percent of the students in China will have mental problems.

B．Mental problems mainly appear among the youth while they are seldom seen among adults.

C．China has the largest number of youngsters with psychological problems.

D．Many schools have realized the problem and taken measures.

5．We can infer that to bring down the occurrence of mental problems among the youth,_______.

A．attention should be paid to the education of the only child

B．psychologist must be a necessary part of school

C．the government will cancel tests to ease the pressure on the students

D．rapid social change plays the leading part in causing mental problems

下列哪项不属于图像后处理技术（）

A.多组CT值测量

B.图像局部放大

C.改变窗宽

D.图像反转

E.矢状重建

对于一些功率较大，且较精密的中压机床设备，应选用（）较适合。

A.齿轮泵

B.叶片泵

C.柱塞泵

D.螺杆泵