2022-2023学年仁爱科普版英语八年级上册Unit 4 Topic 3 The Internet makes the world smaller. 同步练习（含解析）

Unit 4 Topic 3同步练习
一、单项选择（下列题目的四个选项中只有一个是符合题意的。）
1．If you want to know the meaning of the new word, you can ________ in the dictionary.
A．look for it B．look it for C．look up it D．look it up
2．— This scientist thinks we can move to the moon in the future.
— I ________ because there is no air or fresh water for humans to live.
A．disagree B．discuss C．expect D．improve
3．You must return them on time.
A．cut them down B．give them back C．look them up D．put them away
4．Zhang Guimei started the first free senior high school for girls to help them get an ________ in Lijiang, Yunnan.
A．invitation B．information C．education D．environment
5．You can ________ new words in the dictionary when you don’t know their meanings.
A．look up B．look at C．look in D．look like
6．—How about going to the city park this Sunday
—It’s very ________ on the weekend. Let’s stay at home.
A．safe B．quiet C．cheap D．crowded
7．I have some problems with my English writing. Can you give me some ________
A．advice B．subject C．information D．messages
8．We don’t have ________ to buy this sweater, although the sweater is ________.
A．enough money;enough cheap B．money enough;expensive enough
C．money enough;enough cheap D．enough money;cheap enough
9．— Bill is ill and the doctor says his illness is the ________ of eating unhealthy food.
— That sounds terrible!
A．result B．advice C．habit D．hobby
10．—What do you think of Zhong Nanshan
—He is a famous medical expert with a lot of ________ and we all respect(尊敬) him.
A．service B．luck C．experience D．information
11．—My grandma is ill. I have to ________ her at home.
—You are a good boy.
A．look up B．look at C．look for D．look after
12．The price is ______. I mean the coat is ______.
A．expensive; high B．expensive; expensive
C．high; expensive D．high; high
13．Liu Cixi, the famous writer, is good at ________ some surprising stories for readers.
A．putting up B．making up C．cutting up D．looking up
14．— How can I get some ________ about the 20th National Congress of the Communist Party of China (中国共产党第二十次全国代表大会)
— Why not go online
A．information B．practice C．grades D．competitions
15．He wants to ________ a new hobby to relax himself when he is free.
A．look up B．take up C．make up D．stay up
二、根据句意从方框中选择合适的动词，并用其适当形式填空。
solve, be, prepare, improve, win
16．If I become a doctor when I grow up, I ________ able to help others.
17．I ________ for the coming examination now.
18．He advised me ________ my English.
19．You are halfway to ________ the problem by writing it down.
20．It was lucky that we ________ the first prize in the singing competition.
三、填写适当的句子补全对话
A: Hi, Lingling! ____21____
B: I’m reading an article on China Daily.
A: ____22____
B: It’s about the trade war between China and the US. Have you heard about it
A: ____23____ The US will impose more tariffs（征收更多关税）on Chinese exports.
B: And the US government has given lots of pressure on Huawei. Huawei is the No.2 smart phone brand in the world now. I also use Huawei smart phone.
A: ____24____
B: For 2 years.
A: ____25____
B: It‘’s easy to use. I especially love its camera.
A: No wonder you always take amazing pictures!
四、完形填空
All over the world, people have all kinds of friends. ____26____ are people’s honest friends. Cats, elephants, camels, horses, cows are people’s ____27____ and useful friends. But do you think that computers are people’s friends, too Now let me tell you ____28____ about it.
We live in the “computer age”. People, like scientists, teachers, writers and even students, use computers to do much work. But more than 30 years ago, ____29____ couldn’t do much work. They were very big and expensive. Very few people were interested in them and knew ____30____ to use them. Today computers are smaller and ___31___. And they can do a lot of work. Many people like to use them.
Computers become very important because they can work ____32____ than men and make fewer puters can ____33____ people do a lot of work. Writers now use computers to write. Teachers use them to help teaching. Students use them ____34____ and children use them to play puters can also remember what you put into puters are very ____35____ and helpful. It is true that they are our good friends. Do you think so
26．A．Cats B．Dogs C．Cows D．Horses
27．A．helpful B．helpless C．hopeful D．hopeless
28．A．anything B．nothing C．something D．everything
29．A．scientists B．teachers C．students D．computers
30．A．what B．how C．where D．when
31．A．cheap B．cheaper C．expensive D．more expensive
32．A．slow B．slower C．fast D．faster
33．A．help B．make C．use D．stop
34．A．study B．to study C．studying D．studied
35．A．beautiful B．terrible C．impossible D．wonderful
五、阅读理解
If you look at the top of your phone, you will usually see a little symbol that says 3G or 4G. The “G” stands for the “generation(代)” of your mobile network(网络). The 5G mobile network is 100 times faster compared with the 4G mobile network.
In recent years, China pays great attention to the use of 5G. On March 30th, 2019 Shanghai vice-mayor(副市长) Wu Qing made the first 5G video call on a Huawei Mate 10 smartphone, CGTN reported. Shanghai is also the first city in China to start testing the 5G network.
5G will not just bring faster mobile internet, People can use it for many other things, too. For example, 5G will help to make self-driving cars safer. Today’s self-driving test cars have one problem-the lag(滞后). When the car “sees” an obstacle, it sends this information to a data(数据) center and gets instructions. However, the car accident might happen because the car doesn’t get instructions in time. With 5G, this lag will be greatly reduced(减少).
5G could also be used to make the Internet of Things(IOT) stronger. This refers to a large online network that connects(联系) all things and people. For example, your fridge could order eggs online when it finds there are no eggs left inside. How amazing!
36．In which city was 5G tested for the first time in China
A．Beijing. B．Shanghai. C．Shenzhen.
37．We can learn from the story that ________.
A．China will pay little attention to the use of 5G
B．there will be no difference between phones
C．the 5G mobile network is much faster than the 4G mobile network
38．The writer uses self-driving as an example to ________.
A．tell us how 5G’s fast speed(速度) can be helpful
B．show us how fast self-driving cars are
C．tell us the possible dangers of self-driving cars
39．The underlined word “obstacle” in Para.3 means _________ in Chinese.
A．障碍物 B．警告 C．目标
40．According to the story, the IOT is ________.
A．a robot that can do housework
B．a large online store where you can buy anything you want
C．a large online network that connects everything and everyone
六、写作
人们的现代生活离不开电脑，电脑与我们的生活有着密切的联系，在我们的日常生活中非常有用和重要。但是过多的使用电脑对我们有不利的影响，甚至会影响到我们的身心健康。请你写出电脑的利弊。
注意：1.词数80左右；2.可以适当增加内容，以使行文连贯；
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
参考答案
1．D
【解析】句意：如果你想知道这个新词的意思，你可以查字典。
考查动词短语词义辨析。look for寻找；look up查阅。此处表示查字典，应用look up。it为代词，应该位于动词短语look up的中间。故选D。
2．A
【解析】句意：——这位科学家认为我们将来可以搬到月球上。——我不同意，因为那里没有空气或淡水供人类生存。
考查动词辨析。disagree不同意；discuss讨论；expect期盼；improve提高。根据原因状语从句“because there is no air or fresh water for humans to live.”可知，主句为“我不同意上面的观点”，其它选项语意不通。故选A。
3．B
【解析】句意：你必须按时归还它们。
考查动词短语辨析。cut down砍倒；give back归还；look up查找；put away放好。return“归还，退还”，与give back意思相同。故选B。
4．C
【解析】句意：张桂梅在云南丽江开办了第一所女子免费高中，帮助她们接受教育。
考查名词词义辨析。invitation邀请；information信息；education教育；environment环境。根据“Zhang Guimei started the first free senior high school for girls”可知，前文提到了学校，所以和教育有关， 故选C。
5．A
【解析】句意：当你不知道生词的意思时，你可以在字典里查单词。
考查动词短语辨析。look up查找；look at查看；look in拜访；look like看起来像。根据“when you don’t know their meanings”可知，此处是“你可以在字典里查找生词”。故选A。
6．D
【解析】句意：——这周日去城市公园怎么样？——周末公园非常拥挤。我们还是待在家里吧。
考查形容词词义辨析。safe安全的；quiet安静的；cheap便宜的；crowded拥挤的。根据“on the weekend”和“stay at home” 可知，此处不建议去公园，因为周末人多，很拥挤，D项符合，故选D。
7．A
【解析】句意：我的英语写作有些问题。你能给我一些建议吗？
考查名词辨析。advice建议；subject学科；information信息；messages消息。根据“I have some problems with my English writing”可知，希望得到一些有关写作方面的建议，故选A。
8．D
【解析】句意：虽然这件毛衣足够便宜，但是我们没有足够的钱买。
考查形容词辨析及enough的用法。空一为enough修饰名词，放在名词前，排除选项BC；cheap便宜的；expensive昂贵的。enough修饰形容词时，应放在后面，由although引导的让步状语从句可知，空二表示足够便宜。故选D。
9．A
【解析】句意：——比尔病了，并且医生说他的病是吃不健康食物的结果。——听起来很糟糕!
考查名词词义辨析。result结果；advice建议；habit习惯；hobby爱好。根据“Bill is ill and the doctor says his illness is the...of eating unhealthy food.”可知，比尔生病是吃不健康的食物的结果。故选A。
10．C
【解析】句意：——你觉得钟南山怎么样？——他是一位著名的医学专家，经验丰富，我们都尊敬他。
考查名词辨析。service服务；luck运气；experience经验；information信息。根据“He is a famous medical expert with a lot of”可知，钟南山医学经验很丰富，故选C。
11．D
【解析】句意：——我的奶奶生病了。我必须要在家照顾她。——你真是一个好孩子啊。
考查动词短语。look up查找；look at看；look for寻找；look after照顾。根据“My grandma is ill.”可知，应该是我必须要照顾奶奶。故选D。
12．C
【解析】句意：价格很高。我意思是这件大衣比较贵。
考查形容词辨析。price意为“价格”，常用高或低来形容，即high或low。而衣服本身可以用昂贵的或便宜的来形容，即expensive或cheap。故选C。
13．B
【解析】句意：著名作家刘慈欣善于为读者编造一些令人惊讶的故事。
考查动词短语辨析。putting up张贴；making up编造；cutting up切碎；looking up查找。根据题干，可知是指著名作家刘慈欣善于为读者编造一些令人惊讶的故事。故选B。
14．A
【解析】句意：——我怎样才能获得有关中国共产党第二十次全国代表大会的一些信息？ ——为什么不上网呢？
考查名词辨析。information信息；practice实践；grades分数；competitions比赛。根据“about the 20th National Congress of the Communist Party of China (中国共产党第二十次全国代表大会) ”可知，这里是在网上找一些关于中国共产党第二十次全国代表大会的一些信息。故选A。
15．B
【解析】句意：他想在有空的时候培养一种新的爱好来放松自己。
考查动词短语辨析。look up查阅；take up开始从事；make up组成；stay up熬夜。根据“a new hobby”可知，是培养新的爱好，故选B。
16．will be 17．am preparing 18．to improve 19．solving 20．won
【解析】16．句意：如果我长大后成为一名医生，我就能够帮助别人了。根据if引导条件状语从句要遵从主将从现原则，从句为一般现在时，主句是一般将来时，一般将来时的基本结构是“will +动词原形”，be able to do sth表示“能够做某事”。故填will be。
17．句意：我现在正在为即将到来的考试做准备。根据“now”现在，可知时态为现在进行时，应用“be+现在分词”；“prepare for doing”表示为……做准备。故填am preparing。
18．句意：他建议我提高我的英语。根据“He advised me…my English.”可知“advise sb to do sth”表示建议某人做某事，空处应为动词不定式“to+动词原形”；又因固定搭配“improve one’s English”表示“提高某人的英语”。故填to improve。
19．句意：通过把问题写下来，你就已经解决了一部分问题。根据“You are halfway to…the problem by writing it down.”可知be halfway to doing表示“完成了或做了事情的一部分”，halfway后面的to是介词，后面需要加名词或动名词。故填solving。
20．句意：很幸运，我们在歌唱比赛中获得了一等奖。根据“It was lucky that we…the first prize in the singing competition.”可知这是过去发生的事情，时态用一般过去时。故填won。
21．What are you reading/doing 22．What’s it about 23．Yes (I have). 24．How long have you had/used it 25．What do you think of it/ How do you like it
【导语】本文是一段关于对中美之间贸易战的看法以及对华为手机使用感的对话。
21．根据“I’m reading an article on China Daily.”可知，此处是询问对方在读/做什么。故填What are you reading/doing
22．根据“ It’s about the trade war between China and the US.”可知，此处是询问文章(它)是关于什么的。故填What’s it about
23．根据“Have you heard about it ”和“The US will impose more tariffs（征收更多关税）on Chinese exports.”可知，此处是作肯定回答。故填Yes (I have).
24．根据“I also use Huawei smart phone.”和“For 2 years.”可知，此处是询问对方华为手机用多久了。故填How long have you had/used it
25．根据“It‘’s easy to use.”可知，此处是询问对方对华为手机的看法。故填What do you think of it/ How do you like it
26．B 27．A 28．C 29．D 30．B 31．B 32．D 33．A 34．B 35．D
【导语】本文是一篇说明文，讲述人类的新朋友电脑。随着时代的发展电脑越来越有用，人们几乎离不开电脑了。
26．句意：狗是人们忠实的朋友。
Cats猫；Dogs狗；Cows奶牛；Horses马。根据“...are people’s honest friends. Cats, elephants, camels, horses, cows...”可知，后句提到“猫、大象、骆驼、马、牛”，所以此处指狗，故选B。
27．句意：猫、大象、骆驼、马、牛都是人们有帮助和有用的朋友。
helpful有帮助的；helpless无助的；hopeful有希望的；hopeless绝望的。根据“Cats, elephants, camels, horses, cows are people’s...and useful friends.”可知，这些动物是有帮助和有用的，故选A。
28．句意：现在让我告诉你一些关于它的事情。
anything任何事；nothing无事；something某事；everything每件事。根据“Now let me tell you...about it.”可知，此处是肯定句，告诉一些关于它的事情，故选C。
29．句意：但30多年前，计算机不能做很多工作。
scientists科学家；teachers老师；students学生；computers电脑。联系上下文可知，介绍电脑的相关内容，故选D。
30．句意：很少有人对它们感兴趣，知道如何使用它们。
what什么；how如何；where哪里；when何时。根据“Very few people were interested in them and knew...to use them.”可知，很少有人知道如何使用电脑，故选B。
31．句意：今天的电脑更小更便宜。
cheap便宜的；cheaper更便宜的；expensive昂贵的；more expensive更昂贵的。此处与“They were very big and expensive.”对比，现在的电脑更小更便宜，故选B。
32．句意：计算机变得非常重要，因为它们比人工作得快，犯的错误更少。
slow慢的；slower更慢的；fast快的；faster更快的。根据“Computers become very important because they can work...than men”可知，因为电脑比人工作得快，所以非常重要，故选D。
33．句意：电脑可以帮助人们做很多工作。
help帮助；make制作；use使用；stop停止。根据“Computers can...people do a lot of work.”可知，电脑可以帮助人们做很多工作，故选A。
34．句意：学生用它们学习，孩子们用它们玩游戏。
study动词原形；to study动词不定式；studying动名词/现在分词；studied动词过去式。use...to do sth“用……做……”。故选B。
35．句意：电脑是非常奇妙和有用的。
beautiful美丽的；terrible糟糕的；impossible不可能的；wonderful极好的。根据“Computers are very...and helpful.”可知，此处提到电脑的好处，故选D。
36．B 37．C 38．A 39．A 40．C
【导语】这篇短文主要讲述了5G网络的速度很快以及应用广泛。
36．细节理解题。根据文中第二段“Shanghai is also the first city in China to start testing the 5G network.”上海也是中国第一个开始测试5G。由此可知，5G网络首先在上海被测试。故选B。
37．细节理解题。根据文中“The 5G mobile network is 100 times faster compared with the 4G mobile network.”可知5G移动网络比4G移动网络快100倍，故选C。
38．推理判断题。根据文中“For example, 5G will help to make self-driving cars safer.” 5G将有助于使自动驾驶汽车更安全。故选A。
39．词义猜测题。根据文中第三段“When the car ‘sees’ an obstacle, it sends this information to a data center and gets instructions.”可推知当汽车“看到”障碍物的时候，它会将此信息发送到数据中心并获取指令。obstacle是“障碍物”的意思。故选A。
40．细节理解题。根据文中最后一段“5G could also be used to make the Internet of Things(IOT) stronger. This refers to a large online network that connects all things and people. ”可知IOT指的是一个连接所有人和事的大型在线网络。故选C。
六．例文
Computers play an important role in our lives. We can use them to do many things. We can look up information from them. We can also communicate with other friends through them. Besides, we can submit homework on the computers.
But every coin has two sides. There are a lot of disadvantages. Spending too much time on computers is bad for our eyes. So we must control screen time. There is a lot of radiation which does harm to our health. What’s more, we may give away our private information if we don’t use them carefully.
So we should be careful with computers.
【解析】
①题材：本文是一篇说明文，为材料作文；
②时态：时态为“一般现在时”；
③提示：写作要点已给出，考生应注意不要遗漏，适当增加细节完整表述内容。
第一步，介绍电脑的优点；
第二步，介绍电脑的缺点；
第三点，表明“我们应该小心使用电脑”的观点。
①play an important role in 在……中起到重要作用
②look up 查询
③communicate with sb 与某人沟通
④be bad for 对……有害
⑤give away 泄露
①There are a lot of disadvantages.（there be句型）
②Spending too much time on computers is bad for our eyes.（动名词作主语）