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沪教版（新教材）初中英语八年级上册 Unit 2 Amazing numbers Section 4 Extending and developing competencies同步练习
一、词形转换
1. century ________(复数)
2. accurate ________(n.准确性)
3. rapid ________(adv.迅速地)
4. exact ________(adv.精确地)
5. increase ________(n.增长；增加量)
6. estimate ________(n.估计；估算值)
7. population ________(adj.有人居住的；人口稠密的)
8. record ________(n.记录员；记录者)
9. count ________(n.计数；统计)
10. million ________(复数，表大量)
二、用所给词的适当形式填空
1. The world’s ________(population) has reached over 8 billion.
2. We need to make an ________(accurate) count of the wild birds in this area.
3. The number of students in our school is ________(rapid) increasing.
4. Can you tell me the ________(exact) number of people who attended the meeting
5. There has been a sharp ________(increase) in the price of vegetables recently.
6. According to the ________(estimate), about 300 people will join the activity.
7. This is an ________(official) report on the city’s population growth.
8. She worked as a ________(record) in the sports meeting last year.
9. Let’s do a ________(count) of the books on the shelf.
10. ________(Million) of people around the world use the Internet every day.
三、重点短语
1. 人口增长 ________________
2. 精确计数 ________________
3. 创纪录的数字 ________________
4. 大约估算 ________________
5. 迅速增加 ________________
6. over the centuries ________________
7. official statistics ________________
8. billions of ________________
9. keep a record ________________
10. exact number ________________
四、用所给短语的适当形式填空
population growth, accurate count, record-breaking number, approximate estimate, rapid increase, over the centuries, official statistics, billions of, keep a record, exact number
1. _______________ show that the city’s population has grown by 15% in the past decade.
2. We need to make an _______________ to know how many trees are left in the forest.
3. The _______________ of this species has made it one of the most endangered animals.
4. _______________, humans have made great progress in science and technology.
5. There are _______________ stars in the universe that we haven’t discovered yet.
6. The _______________ of participants in the marathon this year is 12,000, which is a new high.
7. You should _______________ of all the expenses during your trip.
8. Can you tell me the _______________ of students who passed the exam
9. Due to better medical care, there has been a _______________ in the average life expectancy.
10. The scientist gave an _______________ of the number of fish in the lake.
五、按要求完成句子
increase / accurate / record / rapid / estimate / official
1. The number of cars in the city ________ a lot in the past five years.
2. We need to make an ________ measurement of the land.
3. Please ________ the number of visitors every day.
4. The city has experienced ________ development since 2000.
5. According to the ________, the project will cost about 1 million yuan.
6. This is an ________ announcement about the new population policy.
六、句型转换
1. The population of China is about 1.4 billion.（改为同义句）
China ________________________ about 1.4 billion.
2. They started to keep records of the bird population in 2005.（用 since 2005 改写句子）
They ________________________ records of the bird population since 2005.
3. We know the exact number by doing a careful count.（对划线部分提问）
________________________ we know the exact number
4. People use computers to record data quickly.（改为被动语态）
Computers ________________________ to record data quickly.
5. Have you ever made an approximate estimate of the cost （作否定回答）
________, ________________________.
七、改错（每句一处错误，划出并改正）
1. The number of students in our school are increasing rapidly.
____________________________________________________________________
We need to make a accurate count of the trees.
____________________________________________________________________
He has keep records of the weather for three years.
____________________________________________________________________
Millions of people visits this museum every year.
____________________________________________________________________
Besides, we can get official statistic from the local government.
____________________________________________________________________
八、重点句子翻译
1. 几个世纪以来，世界人口一直在迅速增长。
____________________________________________________________________
我们需要精确统计这个地区的野生动物数量。
____________________________________________________________________
根据官方数据，这个城市的人口已超过五百万。
____________________________________________________________________
数十亿人生活在亚洲。
____________________________________________________________________
他记录了过去十年里当地的气温变化。
____________________________________________________________________
科学家估算大约有两千种鸟类生活在这片森林里。
____________________________________________________________________
九、语篇填空
阅读短文，从方框中选择适当的词并用其正确形式填空，使短文通顺、意思完整。每空限填一词，每词限用一次。
century, population, accurate, rapid, increase, estimate, official, record, billion, besides, count, exact, develop, region, track
Nowadays, the world’s 1.________ is growing at a 2.________ pace. Over the past 3.________, it has jumped from around 1 billion to over 8 4.________.
To get an 5.________ number, experts do careful 6.________ and make scientific 7.________. 8.________, they use advanced tools to 9.________ and 10.________ data. According to 11.________ statistics, the population in most Asian 12.________ is still on the 13.________.
People have started to realize the importance of sustainable 14.________ to go with population growth. They also 15.________ the changes closely to make better plans.
十、补全对话
根据下面的对话情景，在每个空白处填上一个恰当的句子，使对话的意思连贯、完整。
A: Do you know some amazing numbers about the world
B: Amazing numbers 1. ________________________
A: For example, the world’s population has reached over 8 billion.
B: Wow, that’s really huge! 2. ________________________
A: It reached 8 billion in November 2022.
B: 3. ________________________
A: Asia has the largest population, about 60% of the world’s total.
B: 4. ________________________
A: Yes, many countries are trying to control population growth in different ways.
B: 5. ________________________. We should pay attention to this issue.
参考答案
一、词形转换
1. centuries 2. accuracy 3. rapidly 4. exactly 5. increase
6. estimate 7. populated 8. recorder 9. count 10. millions
二、用所给词的适当形式填空
1. population 2. accurate 3. rapidly 4. exact 5. increase
6. estimate 7. official 8. recorder 9. count 10. Millions
三、重点短语
1. population growth 2. accurate count 3. record-breaking number 4. approximate estimate
5. rapid increase 6. 几个世纪以来 7. 官方统计数据 8. 数十亿的 9. 记录；作记录 10. 精确数字
四、用所给短语的适当形式填空
1. Official statistics 2. accurate count 3. rapid increase 4. Over the centuries 5. billions of
6. record-breaking number 7. keep a record 8. exact number 9. rapid increase
10. approximate estimate
五、按要求完成句子
1. has increased 2. accurate 3. record 4. rapid 5. estimate 6. official
六、句型转换
1. has a population of 2. have kept 3. How do 4. are used 5. No; I haven’t
七、改错
1. 划出are → 改为is（The number of...作主语，谓语动词用单数）
2. 划出a → 改为an（accurate以元音音素开头，用an）
3. 划出keep → 改为kept（现在完成时结构为have/has+过去分词）
4. 划出visits → 改为visit（Millions of people作主语，谓语动词用复数）
5. 划出statistic → 改为statistics（statistics意为“统计数据”，常用复数）
八、重点句子翻译
1. Over the centuries, the world’s population has been growing rapidly.
2. We need to make an accurate count of the number of wild animals in this area.
3. According to official statistics, the population of this city has exceeded five million.
4. Billions of people live in Asia.
5. He has recorded the changes in local temperature over the past decade.
6. Scientists estimate that about 2,000 species of birds live in this forest.
九、语篇填空
1. population 2. rapid 3. centuries 4. billion 5. exact
6. count 7. estimates 8. Besides 9. record 10. track
11. official 12. regions 13. increase 14. development 15. track
十、补全对话（参考合理答案）
1. What do you mean
2. When did it reach 8 billion
3. Which continent has the largest population
4. Are there any measures to control population growth
5. That’s really important

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