下图是一个人类白化病遗传的家族系谱。6号和7号为同卵双生，即由同一个受精卵发育而成的

We are all busy taking about and using the Internet. But how many of us know the history of the Internet?

Many people are surprised when they find that the Internet was set up in the 1960s. At that time, computers were large and expensive. Computer networks didn’t work well. If one computer in the network broke down, then the whole network stopped. So a new network system had to be set up. It should be good enough to be used by many different computers. If part of the network was not working, information could be sent through another part. In this way, computer network system would keep on working all the time.

At first the Internet was only used by the government (政府). But in the early 1970s, universities, hospitals and banks were allowed to use it, too. However, computers were still very expensive and the Internet was difficult to use. By the start of the 1990s, computers became cheaper and easier to use. Scientists had also developed software that made “surfing” the Internet more convenient.

Today it is easy to get on-line and it is said millions of people use the Internet every day. Sending e-mails is more and more popular among students.

The Internet has now become one of the most important parts of people’s life.

小题1:The Internet has a history of more than _________ years.

A．fifty

B．ten

C．forty

D．twenty小题2:A new network system was set up to_______.

A．make computers cheaper

B．make itself keep on working all the time

C．break down the whole networks

D．make computers large and expensive小题3: At first the Internet was only used by __________.

A．the government

B．universities

C．hospital and banks

D．schools小题4: ________ made “surfing” the Internet more convenient.

A．Computers

B．Scientists

C．Software

D．Information小题5: Which of the following sentences is true?

A．In the 1960s, computer networks worked well

B．In the early 1970s, the Internet was easy to use.

C．Sending e-mails is more popular among students than before.

D．Today it is still not easy to get on-line.

The care given to pupils at an infants school has been rated （评定）as outstanding in a recent Ofsted report. Inspectors （视察员）visited Avondale Infants School in Kettering in June and were pleased with what they found.

Schools are graded between one and four, with one being outstanding, and staffs（全体职员）at Avondale were delighted to be to be given an overall（总的）grade of two.

The reports states that the school, which has an above average number of children who are entitled to free school meals, is improving.

It also focuses on the good progress made by children who enter the school with below or well below average standards – the standards at the end of Year 2 are now the best since 2004.

The report states: "Pupils' behavior and personal development are good, being enhanced（增强）considerably by the vibrant（活跃的）atmosphere within the school."

Headteacher Jean Wilkins is also praised as "the driving force behind developments and the vision of the future. Under her exceptional guidance, a conscientious team is intent（专注）upon raising standards."

Mrs. Wilkins said that staff at the school, which has 163 children aged from four to seven, pride themselves on the support and guidance they offer the children.

She said: "We're extremely pleased with these results. We put a lot of emphasis（强调）on the well-being of the pupils to raise their self esteem（尊重）and make sure they enjoy being at school.

"We have focused carefully on where we needed to make improvements."

Inspectors said that the school could improve further through closer working with the parents of some pupils who do not attend regularly.                       

1. The main idea of the text is that _________.

A. The pupils at an infants school.           B. Happy school wins inspector’s praise.

C. The pupils have made much progress.       D. The Avondale Infants School is improving.

2. What else will the school need to do with?

A. Make the meals better                   B. Focus on the pupils

C. Hire a great many staffs                  D. Work with the parents.

3. From the passage, we can learn that what “ infant school” is ?

A. Children attend school with little intelligence.

B. Children attend school with good understanding.

C. Children attend school in the first few years of their life.

D. Children attend school with outstanding performance.

4. The writer wants to tell us the following EXCEPT that _______.

A. Inspectors paid a visit to Avondale Infants School in June, 2004.

B. More than 50% of the children in the school have meals for free.

C. The staffs at the school provide the pupils with much guidance.

D. The infant school has made large quantities of improvement.

当套管鞋以下第一层为脆性岩层时，如砾岩、裂缝发育的灰岩等，不做（）试验。

A、地层漏失压力

B、破裂压力

C、极限压力

D、承压能力

属于措施费的是（）

A.工程排污费

B.环境保护费

C.文明施工费

D.安全施工费

在PC机的日常维护中要注意哪几个问题（）。

A、定期清洁

B、环境温度

C、预防病毒

D、防尘