40分钟课时作业必修2英语答案

40分钟课时作业必修2英语答案篇一

高一上英语(北师大版)必修2Unit 4Section Ⅳ 课时作业(含答案)

课时作业4 (A卷)

Ⅰ.品句填词

1．If Bill____________(tell) me yesterday, I should know what to do now.

2．Without electricity human life____________(be) quite different today.

3．Jane____________(be) prettier, but she doesn’t care much about her clothes.{40分钟课时作业必修2英语答案}.

4．If you want to watch this film，I____________(buy)two tickets.{40分钟课时作业必修2英语答案}.

5．If my brother____________(be) here, everything would be better.{40分钟课时作业必修2英语答案}.

6．He____________(give) you more help, but he was so busy at that time.

7．If he____________(come), he will bring his violin.

8．If you had taken the medicine yesterday，you____________(be) well now.

9．If I’d left sooner，I____________(be) on time.

10．If it____________(rain) again，what else could we do?

答案：1.had told 2.would be 3.could be 4.will buy

5．were 6.would have given 7.comes 8.would be

9．would have been 10.should rain/were to rain/rained

Ⅱ.阅读理解

A{40分钟课时作业必修2英语答案}.

The Internet is not perfect.There are many problems with it.

The Internet is not organized.There is no one in charge of the Internet.It is sometimes difficult to find what you are looking for.It is also easy to get the wrong information on the “Net”．{40分钟课时作业必修2英语答案}.

Some businessmen cheat people on the Internet.Internet thieves can steal credit card numbers.Some advertisers send to e­mail boxes.E­mail boxes are often filled with these unwanted advertisements.

Illegal businesses can operate on the Internet.These businesses sell X­rated materials，cigarettes and alcohol to teenagers.

The Internet has websites with information about making bombs，breaking the law and terrorism.

Criminals can fool people，especially children，in chat rooms.They can spread poisonous information and attack new members.

The Internet is the greatest advance in communication since human emerged.But it can also be like a dark alley in a dangerous part of town.Parents need to set parental controls on their children when they use the Internet.This will keep some of the bad materials away from their children.

The Internet can be dangerous to computers，too.Some people who have evil intentions enjoy causing problems for other people they don’t even know.They create computer viruses.A computer can get viruses by downloading a program that has a virus in it.Some viruses come by e-mail.

A virus can destroy the data a person has saved in computer files.A virus can cause a computer to crash.A virus can also reproduce itself！It can send copies of itself to everyone on a