根据短文内容和所给首字母提示，写出完整正确的单词

Mails, games, music, news, chat-rooms and shopping! The Internet is part of the way we live today. I 51 easy to get onto the Internet. The only thing we need to do is to use a modem （调制解调器） which is used for c 52 a computer to a telephone line. The Internet is changing and growing all the time. More and more people have computers and use the Internet. Using the Internet means 　surfing the World Wide Web (That's the "www" you always hear about). The Web has large n 53　 of websites in it. They are the places you go to get information and do things.

　　 Where do these websites come from? They are made by web designers. What h 54 when you click on a word or a picture? You are sent to a 55 page. It's all because of the web designers. Web designers do a lot of work by using a computer programming language.

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Johnny Smith was a good math student at a high school. He loved his computer. He came home early every day, then he worked with it till midnight. But Johnny was not a good English student, not good at all. He got an F in his English class. One day after school Johnny joined his computer to the computer in his high school office. The school office computer had the grades of all the students: the math grades, the science grades, the grades in arts and music, and the grades in English. He found his English grade. An F! Johnny changed his English grade from an F to A. Johnny' parents looked at his report card. They were very happy.

"An A in English!" said Johnny's Dad. "You're a very clever boy, Johnny."

Johnny is a hacker（黑客）. Hackers know how to take information from other computers and put new information in. Using a modem（调制解调器）, they join their computers to other computers　secretly. School headmasters and teachers are worried about hackers. So are the police, for some people even take money from bank computer account（账户） and put it into their own ones. And they never have to leave home to do it! They are called hackers.

1.Johnny changed his English grade with the computer in _______.

A. the classroom      B. the school office

C. a bank near his house    D. his own house

2.When Johnny's parents saw the report, they were happy because _______.

A. Johnny was good at math

B. Johnny loved computers

C. Johnny could join one computer to another

D. they thought Johnny was not poor in English any longer

3.Who are worried about hackers in the story?   .

A. Johnny's parents.   

B. School headmasters, teachers and the police.

C. The police.    

D. School headmasters and teachers.

4.What should the hackers know well, do you think, after you read this story?    .

A. Information. B. Back computer accounts. C. Computers.   D. Grades.

5.The last paragraph is about _______.

A. Johnny   B. computers     C. hackers    D. modem