水电站计算机监控系统的任务是对水电站运行进行自动监视、（）和管理。A.调试； B.控

— _____________ is the paint brush?

— Three pounds.[ ]

A. How many

B. How much

C. How long

D. How old

咽拭子培养的分泌物可取自

A．扁桃体

B．咽部

C．颊部

D．舌面

E．腭弓

Computers are very important to modern life．Many people think that in the future computers will be used in lots of everyday life．It is thought that we won’t have to go shopping because we will be able to get most things which are sold in shops on the Internet．There will be no more books because we will be able to get all texts from computers．The Internet will be used to play games, see films and buy food．Most telephone calls will be made by computers, too．

Some people are glad about those new ways of shopping and communicating(交流)．Others do not think that computers will replace（代替）our old ways．

Some people think that one day we will not read books made of paper. Instead, we will buy and read books using computers, which will keep many different books in them at the same time．We won’t need to turn lots of pages and paper will be saved．Computerized (计算机化的) books will be used more and more．

While many people say it is a pleasure to go into shops and look at things you want to buy．It is also unlikely that many people will want to read large texts on our computers. Because paper books will perhaps be more friendly．Maybe computers won’t change these two habits．

小题1:Which is the main idea of this passage?

A．People like going shopping

B．Reading books is important

C．Computers are important

D．Computer can be used to play games小题2:There will be no more books because________.

A．There is no paper in the future.

B．People don’t like reading books.

C．They are very expensive.

D．We can read passages from computers.小题3:Which of the following is TRUE?

A．We can see films by computers.

B．People all like to go shopping by computers.

C．We can’t buy anything using computers.

D．All the people like reading books from computers.小题4:Which of the following is mentioned (提到) in the passage?

A．Computers can help us e-mail our friends.

B．We can chat by using computers.

C．Computers can help us make telephone calls.

D．We can listen to the music by computers.

固定道床是由（）构成的。

A.水泥

B.沙子

C.混凝土

D.砾石

场景(五) 某施工企业派出采购员张某去参加工业品展览会，并授权其采购一批外墙面砖。在展会期间，张某出示购买墙面砖的授权委托书及确定样品后，与甲建筑材料公司签订了一份外墙面砖供应合同。因洽谈顺利，张某发现该公司生产的卫生洁具质量上乘，且价格优惠，而现场正准备组织洁具供货，遂以公司名义又签订了50套卫生洁具供应合同。合同成立后，张某便随同甲建材公司送货车回到项目现场。
根据场景(五)，回答下列问题：

下列关于卫生洁具合同的表述中，正确的是( )。

A．因张某是以公司名义与甲公司签订的，所以合同有效

B．因张某签订洁具合同是无权代理，所以合同无效

C．此合同为效力待定合同，如果张某所在的施工企业追认，则合同具有效力

D．因张某有购买墙面砖的授权书，所以无论施工企业追认与否，此合同都具有效力