如果ab=23，那么aa+b等于（ ） A．3﹕2 B．2﹕5 C．5﹕3 D．3﹕5

阅读理解。

     A recent report from Dazhou Daily says about 18% of Dazhou teenagers can have problems with

their minds (内心,精神).  Some students become worried because they have to study very hard.

Others have trouble getting on well with people like their parents and classmates.

    Zhang Qiang, a Junior 2 student from Dazhou, could not understand his teachers in class and was

doing badly in his lessons.  He was afraid of exams. When he looked at the exam paper, he couldn't

think of anything to write.

    Another student, a 15-year-old girl called Wu Yan from Guang'an often argued with her classmates

even her parents because of some different ideas. She became so annoyed about them that she started

to cut her finger with a knife.

    However, many students who have problems won't go for advice or help.  Some think they will look

stupid (愚蠢的)  if they go to see a doctor. Others don't want to talk about their secrets. In order to

solve the teenagers' problems, here is some advice:

* Talk to your parents or teachers often.

* Take part in group activities and play sports.

* Go to see a doctor if you feel unhappy or unwell.

1.  It is reported that ______students in Dazhou can have problems with their minds.          

A. most                      

B. many

C. some                      

D. all the

2. From the passage we know teenagers have problems with their minds because of ______.        

A. their study

B. getting on with other people

C. their hobbies

D. A and B

3.Wu Yan started to cut her finger with a knife because______.        

A. she couldn't get on well with her classmates and even her parents

B. she could not understand her teachers in class

C. she was afraid of exams

D. she had no money for a new shirt 

4. Why don't the students who have problems want to go for help?       

A. Because they think no one will help them.

B. Because they don't want to talk about their secrets and they think it's stupid to see a doctor.

C. Because they think they can solve the problems by themselves.

D. Because they think the doctors could do nothing with their problems.

5. How many pieces of advice are given to the teenagers who have problems in this passage?

A. Two.                  

B. Three.

C. Four.                  

D. Five.

孕妇，有疲乏倦怠、嗜睡懒言、四肢乏力、胎动不安之症。治疗宜首选的药物是

A．桑寄生

B．续断

C．杜仲

D．紫苏

E．白术

A hundred years ago it was assumed and scientifically" proved" by economists that the laws of society made it necessary to have a vast army of poor and jobless people in order to keep the economy going. (46) Today, hardly anybody would dare to voice this principle. It is generally accepted that nobody should be excluded from the wealth of the nation, either by the laws of nature or by those of society. The opinions, which were current a hundred years ago, that the poor owed their conditions to their ignorance, lack of responsibility, are outdated. In all Western industrialized countries, a system of insurance has been introduced which guarantees everyone a minimum of subsistence (生活维持费) in case of unemployment, sickness and old age. I would go one step further and argue that, even if these conditions are not present, everyone has the right to receive the means to subsist(维持生活), in other words, he can claim this subsistence minimum without having to have any" reason". (47) I would suggest, however, that it should be limited to a definite period of time. let’s say two years, so as to avoid the encouraging of an abnormal attitude which refuses any kind of social obligation.

This may sound like a fantastic proposal, but so, I think our insurance system would have sounded to people a hundred years ago. The main objection to such a scheme would be that if each person were entitled to receive minimum support, people would not work. (48) This assumption rests on the fallacy of the inherent laziness in human nature ; actually, aside from abnormally lazy people, there would be very few who would not want to earn more than the minimum, and who would prefer to do nothing rather than work.

(49)However, the suspicions against a system of guaranteed subsistence minimum are not groundless from the standpoint of those who want to use ownership of capital for the purpose of forcing others to accept the work conditions they offer. If nobody were forced to accept work in order not to starve, work would have to be sufficiently interesting and attractive to induce one to accept it. (50) Freedom of contract is possible only if both parties are free to accept and reject it ; in the present capitalist system this is not the case.

But such a system would not only be the beginning of real freedom of contract between employers and employees; its principal advantage would be the improvement of freedom in interpersonal relationships in every sphere of daily life.

(47) I would suggest, however, that it should be limited to a definite period of time. let’s say two years, so as to avoid the encouraging of an abnormal attitude which refuses any kind of social obligation.

林地上林木的上层树高称为立地指数。

蒸发一段切回流时，应（）。

A、立即对闪蒸放料并清洗

B、注意避免蒸发进料流量波动

C、停碱泵

D、清洗回流管5分钟