问题 选择题

.2010年珠海航展上,中国“八一飞行表演队”驾驶我国最新战机“歼—10”做飞行表演。如图2为某记者拍到的三架飞机同速、同向飞行的前后两张照片,由图可知

A.以任一架飞机为参照物另两架都是运动的

B.飞机相对于地面正在降落

C.每架飞机的飞行员相对于地面是静止的

D.以跑道外的观众为参照物飞机是运动的

答案

答案:D

三架飞机同速、同向飞行彼此相对静止,A错。飞机相对于地面正在起飞,B错

每架飞机的飞行员相对于地面是运动的,C错。以跑道外的观众为参照物飞机是运动的,D对

阅读理解

Everyday we talk about and use 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 network 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 on the time.

At first the Internet was only used by the government, 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” in the Internet more convenient.

Today it is easy to get on-line and it is said that millions of people use the Internet every day. Sending e-mail 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.sixty

B.forty

C.fifty

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 network

D.make computers large and expensive小题3:__________ made “surfing” the Internet more convenient.

A.Computers

B.Hardware

C.Software

D.Information小题4:Which of the following is TRUE?

A.In the 1960s, computer network worked well.

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

C.Today it’s still not easy to get on-line.

D.Sending e-mail is now more popular among students than before.

单项选择题