冀教版英语八年级下册Unit 4 Lesson 23 The Internet--Good or Bad? 同步课时练习（含答案解析）

Lesson 23　The Internet - Good or Bad
Ⅰ.根据句意及首字母提示补全单词
1.Gina is 1.89 metres ( http: / / www.21cnjy.com )tall. Her height is an a　　　　 for playing basketball.
2.I don’t like c　　　　. I like paper money.
3.The policeman cau ( http: / / www.21cnjy.com )ght the tall man because he s　　　　 an iPad from the supermarket.
4.Don’t play with fire. It may c　　　　 a fire.
5.This is a s　　　　 problem. We can work it out easily. 21·cn·jy·com
Ⅱ.用方框中所给单词或短语的适当形式填空
proper, attack, in seconds, far away, aside from
6.This guide ( http: / / www.21cnjy.com )book can teach the teenagers how to use the Internet 　　　　　　　　and carefully. 2·1·c·n·j·y
7.　　　　　　　　 cars, the factory makes bicycles.
8.Now it is possible t ( http: / / www.21cnjy.com )o send words and pictures around the world 　　　　　　　　.
9.I saw that the cat 　　　　　　　　the mouse suddenly.
10.If Sue works 　　　　　　　　, she will miss her family. 21·世纪*教育网
Ⅲ.单项选择
11.(2020黔南改编)Charlie, don’t read in the sun! It 　　　　your eyes!
A.is good for B.is harmful to
C.is cruel to D.is sad for
12.(2021邵阳改编)—Our final examination is coming and we are so busy.
—I agree. We have more exercises to do and 　　　　time to rest now. www-2-1-cnjy-com
A.more B.fewer
C.less D.smaller
13.(2021大庆)Stop pla ( http: / / www.21cnjy.com )ying computer games. It 　　　　too much of your time.
A.takes up B.takes off
C.takes back D.takes down
14.(2021十堰改编)—You are not 　　　　dressed for the weather. 2-1-c-n-j-y
—But I feel comfortable.
A.properly B.heavily
C.directly D.hardly
答案 11-14
Ⅳ.根据汉语意思完成句子,每空一词
15.我的爷爷想要理发。
My grandfather wants to 　　　　his hair 　　　　.
16.这个小女孩在六岁的时候就会弹吉他了。
The little girl 　　　　　　　　　　　　play the guitar at the age of six.
17.我的表姐经常通过电子邮件和她的朋友们保持联系。
My cousin often 　　　　　　　　　　　　　　　　her friends by e-mail.
18.花费太多时间上网对我们的健康有害。
　　　　too much time online 　　　　bad for our health. 【来源：21·世纪·教育·网】
Ⅴ.补全对话(方框中有两项多余)
A:19.　　　
B:Yes, I have one.It’s a birthday present from my uncle.21*cnjy*com
A:20.　　　
B:I usually use it to search for information on the Internet.【出处：21教育名师】
A:Why
B:21.　　　
A:22.　　　
B:Every day.
A:23.　　　
B:It’s very useful.I like it very much.
A.How do you like your computer B.Do you like computer games C.What do you usually use your computer for D.Because it is fast and easy.E.Do you have a computer F.Computers are very useful.G.How often do you use your computer
Ⅵ.词语运用
　　阅读下面短文,在空白处填入一个适当的单词(有提示词的,填入所给单词的正确形式)。
The Internet p ( http: / / www.21cnjy.com )lays an important part in our daily life. First, we can search 24.　　　　 the news through the Internet. 25.　　　　(two), we can learn more knowledge from the Internet. Third, students like chatting 26.　　　　 their friends online. It makes 27.　　　　(they) relax. And e-books truly change their reading 28.　　　　(habit). These advantages make our life 29.　　　　(easy) than before. www.21-cn-jy.com
30.　　　　, the Intern ( http: / / www.21cnjy.com )et also brings problems. Spending too much time online is harmful to our eyes. And it’s not good for our 31.　　　　(healthy). Some bad people try to get our 32.　　　　(person) information, such as our birth dates, our phone numbers and our addresses. So, we should use the Internet 33.　　　　(careful). 【来源：21cnj*y.co*m】
Ⅶ.(2020菏泽改编)任务型阅读
阅读下面短文,按要求完成34~38题。
What is 5G It ( http: / / www.21cnjy.com ) is the fifth generation of mobile network technology. In the past, 1G let us talk with each other. 2G let us send messages. 3G gave us the Internet. And 4G made all of these things faster. What’s special about 5G 【版权所有：21教育】
5G networks are ( http: / / www.21cnjy.com ) about 10 times faster than 4G. This means you can download a movie in seconds using 5G. Also, VR games will become more popular with 5G. 5G will make the VR games even more real.21教育名师原创作品
5G also make ( http: / / www.21cnjy.com )s the Internet of Things(物联网) possible. Smart home is part of it. For example, your bread maker could make breakfast by itself after your alarm(闹钟) rings. And if the air in your room is too dry, a smart sprinkler(智能洒水器) could water your plants by itself when you are not at home. 21cnjy.com
So you just need t ( http: / / www.21cnjy.com )o buy a new mobile phone to use 5G. But a 5G phone costs about 8 000 yuan right now. It is said that about one year from now, the price could go down to around 2 000 yuan.21*cnjy*com
34题完成句子;35、36题简略回答问题;37题找出并写下第三段的主题句;38题将文中画线句子译成汉语。
34.With 5G, you can download a movie in 　　　　　　　　.
35.What did 3G give us
21世纪教育网版权所有
36.How much does a 5G phone cost now

37.
38.
答案
Lesson 23　The Internet - Good or Bad
Ⅰ.1.advantage　2.coins　3.stole
4.cause　5.simple
Ⅱ.6.properly　7.Aside from
8.in seconds　9.attacked　10.far away　
Ⅲ.11.B　句意:“查理,别在阳光下看书!这对你的眼睛不好!”be harmful to意为“对……有害”,
12.C　句意:“我们马上要期末考试,很忙 ( http: / / www.21cnjy.com )。”“我同意。现在我们有更多的习题要做,休息时间更少了。”做更多的习题,因此休息的时间更少了,排除A;time是不可数名词,用little的比较级less修饰。21教育网
13.A　take up意为“ ( http: / / www.21cnjy.com )占用;从事”;take off意为“脱下;起飞”;take back意为“收回”;take down意为“取下;记下”。take up too much of your time意为“占用你太多的时间”。句意:停止玩电脑游戏,它占用你太多的时间了。
14.A　句意:“你的穿着不适合天气。”“ ( http: / / www.21cnjy.com )但我觉得很舒服。”properly意为“适当地;正确地”;heavily意为“大量地;猛烈地”;directly意为“直接地”;hardly意为“几乎不”。由下文“但我觉得很舒服”可知,A项符合语境,
Ⅳ.15.get; cut　16.was able to
17.stays/keeps in touch with
18.Spending; is
Ⅴ.19—23　ECDGA
Ⅵ.24.for　25.Second　26.with
27.them　28.habits　29.easier
30.However　31.health　
32.personal　33.carefully
Ⅶ.34.seconds
35.The Internet.
36.About 8 000 yuan.
37.5G also makes the Internet of Things possible.
38.如果你房间里的空气太干,当你不在家的时候,一个智能洒水器能自动浇灌你养的植物。
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