Unit 5 Canada-The True North grammar课时作业

阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

The Internet seems to have become a necessary part in modern life. This is 1 the internet has a lot of 2 . To begin with, the Internet provides people 3 lots of information in a very 4 time. With this easy access 5 the Internet, searching 6 information has become easier than ever before. 7 , the Internet 8 the way people communicate 9 each other. E-mail 10 us to write to our friends and 11 letters from our friends cheaply and 12 . Furthermore, the Internet has changed business. E-commerce (电子商务) enables people to do business and go shopping at home easily and conveniently. Finally, the Internet 13 an important role in people's education.

14 , the Internet also has some 15 . Cyber crime causes a great 16 in people's property. Computer viruses bring us lots of 17 . The trash mail is always a nuisance to everyone. Worst of all, pornography (色情) may do harm to people, especially 18 people.

In a word, every coin has two 19 , but on the whole, it brings people more benefits than harm. It is suggested that a clever use 20 be made of this modern technique for the benefit of all people.

1. A. why B. because C. whether D. that

2. A. problems B. harm C. trouble D. advantages

3. A. to B. for C. with D. of

4. A. short B. long C. much D. many

5. A. of B. to C. with D. in

6. A. to B. for C. through D. off

7. A. As a result B. Luckily C. So D. Besides

8. A. stops B. keeps C. changes D. happens

9. A. with B. to C. for D. by

10. A. lets B. makes C. has D. allows

11. A. receive B. hear from C. posts D. brings