1960年底，毛 * * 大力提倡调查研究，并于次年亲自深入农村调查。其目的是[ ]

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

染色体的概念是(    )

①易被酸性染料染成深色的物质 ②易被碱性染料染成深色的物质 ③存在于细胞核中 ④存在于细胞质中 ⑤只含有DNA  ⑥含有蛋白质和DNA

A．①②③

B．④⑤⑥

C．②③⑥

D．①③⑤

以下隋唐中央政府的机构中，______主管钱币收支和保管。( )

A．太常寺

B．将作监

C．太府寺

D．都水监

简述抽样调查的优缺点。

已知父母的血型分别为A型和AB型，其子女血型不可能为哪种血型（）。

A.B

B.AB

C.A

D.0

E.以上均不对