根据短文内容及首字母提示，填写所缺单词，使短文意思完整。每空一词。
The environment is becoming worse and worse . There are many kinds of pollution that I worry a 【小题1】__. The most serious two are n___【小题2】___ pollution and air pollution , because people can’t live h___【小题3】___ with polluted air. Animals can’t live in the world , e___【小题4】___. More and more people are becoming i___【小题5】___because of  polluted air .
I think factories should not p___【小题6】____ dirty water into rivers directly. We’d better go on foot or by bike i___【小题7】___of by car . Finally , everyone must pay a___【小题8】____ to rubbish pollution . If everyone makes so much rubbish , one day we may live in a world f___【小题9】____ of rubbish . How terrible it will be ! We should take a___【小题10】___to make our world cleaner and more beautiful

Before I left to meet Lynne, my friend told me that I had better take some money, but I didn’t listen to him. I thought that Lynne would pay because she invited me.
I arrived at the restaurant on time because I knew Americans like to be on time. Lynne and I sat at a table near the door and soon we began to enjoy ourselves there.
The food there was very delicious. I talked a lot about Saudi Arabia and Lynne told me all about herself. After two hours the waiter came and asked if we wanted one check(账单) or two. Lynne said two. Lynne paid her check, and the waiter gave me mine, I had no money. Then I had an idea, I called my friend. In a few minutes he arrived with some money. He laughed at me all the way home.
Now, I think it’s funny, but I guess you can understand how I felt at that time. So when you visit a foreign country, you have to learn their language and culture.
【小题1】From the first paragraph, we mainly know____________.

1 

How could we live without the Internet? That's how most of us keep in touch with friends, find homework support, research cool place to visit, or find out the latest news. You can use it to do research for school, find out what movie is on near you, check out a college you're thinking about, or find a job or volunteer opportunity. Almost anything you can think of has a website about it.

You've probably heard stories about people who get into trouble in chat rooms. Because users can easily keep anonymous, you may be cheated in the chat room. Everyone in the chat room looks like wearing a mask(面具). Chat rooms often attract people who are interested in more than just chatting. They will sometimes ask visitors for information about themselves. The information might be about their families, or where they live. It shouldn't be given away.

Usually, the people who request personal information like home addresses, phone numbers, and email addresses use the information to do some illegal(违法的) things. This might harm a person's or family's well-being.

Of course, the Internet is home to millions of places you can and should visit. However, remember to protect yourself while online.

1.The first paragraph is mainly about _________of the Internet.

A. the advantage          B. the safety

C. The interest       D. the trouble

2.Which can't the Internet do for you according to the passage?

A. Find out the latest news.

B. Research a cool place to visit.

C. Do homework

D. Get information of your school

3.The underlined words "keep anonymous" mean "______" in the passage.

A. keep its name different

B. keep its name unknown

C. keep its story interesting

D. keep its name known

4.The Internet is an unsafe place because_____.

A. There are many illegal things

B. Your personal information may be given away.  

C. The computers may be harmed

D. Your e-mail address might be changed

5.What can we learn from the passage?

A. Internet users should wear a mask.

B. The Internet makes it difficult to use the computer.

C. We'd better not give away the personal information on the Internet.

D. It's difficult to get cheated on the Internet.