简述水箱清洁操作要求。

阅读理解。

    Life  in  the  future willbe different from that oftoday.  Many  changes  willtake place.  Here  is some

information about things that may happenin the future.        

    1. Cars will run on solar(日光的) power orelectricity and will be much cleaner. They willbe much safer. For example, if you are too closeto another car or if you are driving dangerously,your car will slow down

by itself.        

    2. Because there won ' t be any spare land,new cities will have to be built in the sea. Somecities on

water will have two levels. People willlive on the above level; the lower level will beused for traffic, shops

and

factories.          

    3. Biotechnology(生物技术) will  make  foodbetter and healthier. Plants that are not affectedby insects or illnesses will be developed. Thetaste of fruit and vegetables will be better andfood will be kept longer.    

    4. New technology will be used to makeTVs that are only 5cm thick. They will havepictures that are

as clear as photos. Electricalappliances(家用电器)will be quieter and will becontrolled by computer ,

they will also use so%less power.      

    5. Many new ways to cure illnesses will besuccessful by using products of geneticengineering(基因产品). Cures will be found forthe flu and the common cold. However, somenew illnesses will appear.

1. How much information about things that  may happen in the future is mentioned in thispassage?  

A. 3        

B. 4        

C. 5        

D. 6

2. When your car is too close to another  car or if you are driving dangerously, what   will happen? Your car will ________.  

A. stop by itself  

B. slow down by itself  

C. go straight as usual  

D. go fast by itself

3. Why will people have to build new  cities in the sea? Because ________.    

A. there won't be any spare land   

 B. it's very exciting    

C. people can see the sea easily    

D. it's easy to build in the sea

4. What will the biotechnology be used  for? It'll make food ________.  

A. better  

B. healthier  

C. keep longer  

D. better and healthier  

5. The best title for the passage is ________.  

A. Get ready for the future  

B. Biotechnology  

C. Electrical appliances  

D. Genetic engineering

望色十法中"清"主( )

A．轻病

B．阳证

C．表证

D．新病

E．实证

误码率描述了数据传输系统正常工作状态下传输的( )。

A．安全性

B．效率

C．可靠性

D．延迟

“学习型组织”是由（）提出的。

A.巴纳德

B.卡斯特

C.彼得﹒圣吉

D.奥斯本

L、M和N三个人中的每一个人都从一街头小贩那里至少买一种食物，该小贩仅售F、H、P和S四种食物。他们根据以下条件来选择他们的食物：(1)每个人最多只买每种食物的一份；(2)若三个人中的某个人买了H，则他不买S；(3)至少有1个人买了H，至少有1个人买了P；(4)M买了S；(5)N买了F；(6)L和N不买P：(7)M和N不买同样的食物。

若L买了S，则下面哪一项陈述一定正确

A．L买了F。

B．M买了F。

C．N买了H。

D．N恰好买了一种食物。