建筑材料的基本物理参数有密度、表观密度、堆积密度，还有( )。A．孔隙率、空隙率、吸

阅读理解。

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

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

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

     "I spend more time in chat rooms than with my 'real-1ife' friends."

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

Internet addicts spend at least thirty to forty hours online every week. Internet addicts lose control of the

time they spend on the Internet. The use of the Internet can be an addiction like drug (毒品) use.

     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 Internet 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 on the

Internet than in the real world of friends and family. Is "surfing the Internet" a hobby or an addiction for

you? You may have a problem if you have these symptoms (症状):

     ●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 of Internet?

A. It is something like making friends.

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. The teens are wasting too much money.

B. They used to work on the Internet.

C. The playing field of the teens will disappear.

D. More and more of the teens wil1 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.

“鲈鱼堪绘”、“求田问舍”、“司马青衫”三个典故所涉及到的人物依次是

A．自居易、张翰、许汜

B．张翰、自居易、许汜

C．许汜、张翰、自居易

D．张翰、许汜、自居易

( )是指人力资源部门根据组织规划的需要，为每个成员合理分配工作，保证其能力能够适应工作职责的需要。

A．人力资源管理

B．组织规划

C．人员任用

D．人员培训

随着生活水平的提高，家长给子女的零用钱也越来越多，五成以上中学生每月零用钱在50元到100元之间。调查显示，中学生零用钱的三大流向为零食、学习用品、书籍。另外，中学生的人情消费、文化娱乐消费也趋于成人化。对此有关专家认为：社会需要一个双向的“希望工程”，既要让贫困的孩子能上学，又要让家庭富裕的孩子吃些苦。这是因为[ ]

①只要有艰苦奋斗的精神，任何事情都能办成

②艰苦奋斗是创造物质文明和精神文明的巨大动力

③任何事业的成功和理想的实现，都是一个艰苦奋斗的过程

④艰苦奋斗作为一种精神、一种生活态度，是任何时候都要提倡的

A．①②③

B．②③④

C．①③④

D．①②④

关于持续性枕后位的临床表现，下列哪项错误（）

A.脐带绕颈

B.活跃期延缓

C.第二产程延长

D.产妇过早出现排便感

E.腹壁前扪及胎儿肢体