在偏差计算中，如果投资偏差大于零，进度偏差小于零，则( )。A．投资节约，进度滞后

1957年麦格雷戈应邀到联合碳化公司与公司人事部门联合成立顾问小组，把实验室训练的技术系统地在公司使用。这个小组后被称之为（）。

第一个铸造针灸铜人的医家是（）

A.皇甫谧

B.王执中

C.王惟一

D.窦汉卿

E.杨继洲

婴儿化脓性脑膜炎合并硬脑膜下积液，最简便的首选检查为（）

A.头颅B超

B.头颅CT

C.头颅MRI

D.头颅透光试验

E.硬膜下穿刺

阅读理解。

     New rules and behavior standards for middle school students came out in March. Middle school is going

to use a new way to decide who the top students are. The best students won't only have high marks. They

will also be kids who don't dye (color) their hair, smoke or drink. The following are some of the new rules.

     Tell the truth. Have you ever copied someone else's work on an exam? Don't do it again! That's not

something an honest student should do. If you have played computer games for two hours in your room,

don't tell your parents you have done homework.

     Do more at school. Good students love animals and care for other people. April is Bird-Loving Month in

China. Is your school doing anything to celebrate? You should join! That way, you can learn more about

animals and how to protect them. When more people work together, it makes more fun for everyone.

     Have you ever quarreled with your teammates when your basketball team lost? Only working together

can make your team stronger. Be friendly to the people you are with. Try to think of others not only yourself.

     Be open to new ideas. Have you ever thought that people could live on the moon? Maybe you'll discover

Earth II someday. Don't look down on new ideas. Everyone's ideas are important. You should welcome them,

because new ideas make life better for everyone.

      Protect yourself. Has someone ever taken money from one of your classmates? Don't let it happen to you.

If you have to go home late, you should let your parents know.

    Use the Internet carefully. The Internet can be very useful for your studies. But some things on the Internet

aren't for kids, so try to look at Web pages that are good for you. You can use the Web for fun or homework.

Can't you find any good Web sites for children? Here are some: http://kids.eastday.com;http://chinakids.com;

http://www.cycnet.com

1. The school new rules will help kids by telling them ______.

A. how they can study well

B. what they should do at school

C. what is right and what is wrong

D. how they can protect themselves

2. The main idea for the fourth paragraph is about _______.

A. making the team stronger

B. working together with others

C. being a good friend to others

D. getting on well with others

3. The passage tells us how to ______.

A. be top students

B. do more at school

C. care for others

D. use the Internet

若向量组，α,β,γ线性无关，α,β,δ线性相关，则( )。

A．α必可由β,γ,δ线性表示
B．卢必不可由α,γ,δ线性表示
C．必可由α,β,γ线性表示
D．必不可由α,γ,β线性表示