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 1990s,computers became cheaper and easier to use.Scientists had also developed software that made“surfing"the Internet easier。

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

The Internet has now become one of the most important parts of people's life。

58.How long have we used he Internet？

A。For about 10 years。B。For about 20 years。

C。For about 40 years.D.For about 60 years.

59。What is true about computers in the 1990s?

A.People could get information only from them.

B。They became larger and easier。

C。People didn’t know how to use them。

D.More people could afford and use them。

60。What can we learn from the last sentence?

A。People will die without the Internet。

B。All people should set up their own network。

C.People live easily without the Internet.

D。People will spend more and more time on the Internet

D

The world is not only hungry,but it is also thirsty for water。This may seem strange to you，since nearly 70％of the earth's surface(表面)is covered with water.But about 97％of that is sea water，or salt water。Man can only drink and use the other 3％—the fresh water（淡水）from rivers，lakes，underground，and other sources.And we can not even use all of that。Even worse，some of it has been made dirty.

However,as things stand today，this fresh water is still enough for us.But our need for water is becoming larger and larger quickly—almost day by day.We should take steps to do with this problem now and in this way we can get away from a serious world—wide water shortage（缺少）later on。

We all have to learn how to stop wasting our valuable water.One of the first steps is to develop ways of reusing it.Today in most large cities,water is used only once and then sent out into a sewer system（下水道）.From there it returns to sea or runs into underground places。

But even if every large city reused its water，we still would not have enough。All we’d have to do to make use of sea water in the world is to remove（去掉）the salt.If we take these steps we’ll be in no danger of drying up.

61。The world is thirsty for water because。

A.man hasn't got enough food to eat B.we haven’t got enough fresh water

C。only 70％of the earth's surface is water D.little water is sent into sewer systems

62.The best but the most difficult way to solve the water problem of the world is to.

A。remove the salt from sea water B。make the water in cities clean

C.take water from underground D.make the need for water smaller

63。What's the best title(标题）for this passage?

A。The Importance of the Water B.The World’s Water Problem

C。The Thirsty World D。Fresh Water and Sea Water

E

Young people can have problems with their minds。Some students become worried because they have to study very hard。Others have trouble getting on well with people like their parents and classmates。

LiWei，a Junior 2 student from Hefei，could not understand his teacher and was doing badly in his lessons。He became so worried about it that he started to cut his finger with a knife。.

Another student,14—year—old Yan Fang from Guang zhou，was afraid of exams.She got very worried in one,and when she looked at the exam paper。She couldn't think of anything to write。

A recent reort from Jiefang Daily says about 18％of Shanghai teenagers（青少年)have mental（心理的）problems。Their troubles include(包括）being worried and very unhappy。And having problems in learning and getting on with people。Many students who have problems won’t go for advice（劝告）or help.Some think they will look like a fool if they go to see a doctor.Others don’t want to talk about their secret.

Liang Yuezhu,an expert on teenagers from Beijing Aiding Hospital has the following advice for teenagers：

＊Talk to your parents or teachers often

＊Take part in group activities（活动）and play sports

＊Go to see a doctor if yofeel unhappy or unwell

64.The students who often become worried or have trouble getting on with others may have.