电子（e，m）以速度ｖ0与ｘ轴成30°角垂直射入磁感强度为B的匀强磁场中，经一段

阅读理解。

     It's hard to make friends if you stay at home alone all the time. Be outgoing, get out of the house and do things with

other people. It's easier to make friends when you follow these:

     Show people what you are good at. Talk about the things you like and you do best. People will be interested in you

if there is something interesting.

     Look people in the eye(正视) when talking with them. That way,  they'll find it easier to talk to you,   or people may

think you're not interested in them and stop being interested in you.

     Be a good listener. Let people talk about themselves before talking about yourself. Ask lots of questions. Show an

interest in their answers.

     Make friends with the people you really like, not just with those who are easy to meet. Be friendly to people.   That

way, you'll have a bigger group of people to choose and more chances(机会)for making friends.

1. If you _______, you will have more friends.

A. get out and talk to people      

B. stay at home   

C. like talking                

D. are good at asking questions

2. If you look right and left when people talk to you, they may think you are_______.

A. looking for something        

B. worrying about something

C. happy to see them          

D. not interested in them

3. Linda is talkative(健谈的). But she doesn't like listening to other people. Linda should_______.

A. show off(炫耀) to other people    

B. be a better listener

C. look people in the eye            

D. make friends with other kinds of people

4. You should be _______ if you want to have more chances for making friends.

A. cool    

B. more careful    

C. more friendly    

D. hard-working

5. The main idea of this passage is _______.

A. that it is hard to make friends    

B. about how to make friends 

C. about not talking about yourself  

D. about being friendly to others

关于发票开具要求的表述，不正确的是（ ）。

A．用电子计算机开具发票须报主管机关批准

B．任何单位和个人不得转借、转让、代开发票

C．发票开票的时限和地点应符合规定

D．可自行拆本使用发票

皮夹里有2元、3元、4元的邮票各10张，现在要寄一封12元邮资的信，不用眼睛看，从皮夹中抽出若干张邮票，为了保证从抽出的邮票中一定能凑出12元的邮票组合来，那么至少要抽出多少张邮票．

我国第一家实行招投标的物业是什么？

坐位时脑脊液压（）

A.7.4

B.1.003~1.009

C.5~13mmHg

D.15~20mmHg

E.21~30mmHg