1Complete the following passage with the words or phrases in the box. Each one can only be used once. (将下列单词或词组填入空格。每空格限填一词，每次只能填一次)

Jane Goodall is a famous woman scientist, who __1___ chimpanzees(黑猩猩)in

Africa for many years. Her research helps people understand how much they behave __2___humans. Nobody before has fully understood chimpanzees’ behavior. Jane spent many years observing and ___3___ their daily activities. She did not study at a university but she worked with animals in their __4__ environment. When she arrived at Gombe(贡贝在尼日尼亚) in 1960， it was usually for a woman to live in the forest. Only after her mother came to help her for the first months, was she allowed to begin her project. At first, Jane could not get close to the chimpanzees of Gombe, but little by little she was able to move closer to the chimpanzees and watch them __5__ with binoculars(望远镜). Finally, Jane ___6___  very close to the chimpanzees at Gombe. Jane’s patience and trust won them over, and she enjoyed a degree of acceptance(接受度) that was hardly dreamed possible. She sat among the chimpanzees, and they would greet her as they __7__ each other with a touch or a kiss.

Her work has changed __8__ people think about chimpanzees, and she has been helping the rest of the world understand and respect the life of these animals. Perhaps most significantly, Jane’s work has opened a window into the world of chimpanzees for a public with a strong curiosity(好奇心)， and it has proved more successful than anyone has ever imagined.

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.

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

2.A new network system was set up to_______.

3. At first the Internet was only used by __________.

4. ________ made “surfing” the Internet more convenient.

5. Which of the following sentences is true?

1 

Recent research from the Pew Internet Project suggests that 90% of Americans aged from 12 to 17 use the Internet, and 51% of those teens use social networks. However, there are many possible problems with social networking sites and the teenagers who use them.

Apart from the social advantages, social networking sites can be used to record school research, develop artistic talents and experiment with other forms of subject creation. They provide a way to communicate with others who share the same interests and to get helpful advice on ongoing projects.

Along with these advantages come some dangers. For example, most social networking sites are open to all, especially MySpace, which is the most popular social network among teens in America. It means that they could be put in unpleasant and frightening situations.

A greater danger is that teens may become objects of the people with secret purposes. The secrecy of some social networking sites makes it easy for dangerous people to find young teens and invite them into dangerous conversations. It’s easy for them to pretend as teens and draw children into dangerous real-world communication as well. Then further hurt might be on its way.

Another danger is identity stealing, which can happen when teens share too much information about their names, dates of birth and locations.

Therefore, it’s very important to make sure teens are safe when they use social networks.

Many of the same rules that work for online chat work for these sites:

※ Don’t use your real name.

※ Don’t give out personal information to people you don’t know. A last name and a town are enough for a bad guy to find where you are.

※ Don’t believe that people are who they say to be.

※ Immediately end any communication that makes you uncomfortable and report it to a parent.

Only if you are sure of your safety, can you enjoy the fun brought by social networking. Besides, trying to deal with all problems on your own can lead to terrible results. Remember, asking your parents or school officials for help doesn’t mean you are unable to do anything but wiser than many others.                                             

1.How many dangers of using social networks are mentioned in the passage?

A. 2.                 B. 3.                C. 4.                D. 5.

2.The writer takes MySpace as an example to show that ________.

A. students could be put into unreal situations on the Internet

B. teenagers are facing unknown dangers on the social networks

C. Internet provides more social websites to American teenagers

D. social networks are very popular among teenagers in America

3.We can infer from the passage that ________.

A. the dangers are similar when chatting online and surfing social networks

B. more than half American teenagers aged from 12 to 17 use social networks

—Congratulations! Among the best pictures in the competition，I found _______. Why did you draw it?

一During the trip to the Yellow Mountain _______ May.

   A.yours; in     B.yours; on     C.you; in      D.you; on