Unit 1 Topic 2 The population in developing countries is growing faster. 课时优化训练(含答案)

Unit 1 The Changing World 2. The population in developing countries is growing faster. —九年级英语仁爱版上册课时优化训练
一、单选题
1.— How do you like studying here
—______. Everyone is kind to me.
A. Bad luck B. It's great C. Sounds great D. Never mind
2.—I went swimming last Sunday.
—_____ I like it very much.
A. So do I B. So did I C. So I did D. So I do
3.Great changes ______ in my hometown recently. It is more beautiful now.
A. took place B. have taken place C. happened D. have been happened
4.Factory workers have been replaced __________ by machines because of the development of AI (artificial intelligence).
A.simply B.gradually C.especially D.luckily
5.—Have you finished your homework ______
—No. I'm still doing it.
A. already B. yet C. ever D. never
6.—It is really cold today.
—______ I have to wear my warm clothes.
A. So is it. B. So it is. C. So it was. D. So was it.
7.The apples on this tree is ______ than ______ on that tree.
A. much delicious；that
B. more delicious；those
C. much delicious；these
D. more delicious；that
8.—Are there more boys or girls in your class
—Girls. About 60% of the students _______
A. is girls B. are girls C. is boys D. are boys.
9.—Why don't you go out and do some outdoor activities
—______ the bad weather.
A. Because B. Because of C. Thanks for D. Thanks to
10.—The news says that the population in India is increasing rapidly.
—Yes. _____, it will have the largest population in thirty years.
A. What's up B. What's wrong C. What's more D. What's on
二、阅读理解
The World Population Prospects (展望) 2022 report says: The population in the world reached 8 billion (十亿) on November 15, 2022. And the number will increase in the next ten years, although at a slower speed.
The population in the world is expected to rise to about 8.5 billion by 2030, 9.7 billion by 2050, peak (峰值) at about 10.4 billion in the 2080s, and stay there until 2100, the report says.
World population growth peaked at 2.1 percent between 1962 and 1965, and since then it has fallen quickly to less than 1 percent in 2020.
The UN predicts that population growth could fall to about 0.5 percent by 2050 as fertility rates (生育率) continue to fall.
On the other hand, people can live much longer than before, from 63.8 years in 1990 to 72.8 years in 2019, and will reach 77.2 years in 2050. At that time, 16 percent of the population will be 65 years or older.
China and India have the largest population in the world, with 1.4 billion people each. But India will have the largest population in 2023 and reach 1.7 billion people by 2050.
11.What will be the population in the world in 2091 according to the text
A.8.5 billion. B.9.7 billion. C.8 billion. D.10.4 billion.
12.What can we infer (推断) from the text
A.The old care will be a serious problem.
B.The population will increase quickly.
C.China will still have the largest population.
D.People can reach 72.8 years in 2050.
13.What does the text mainly tell us
A.The serious problem of population.
B.The prediction of population growth.
C.Some ways to control population.
D.The population growth in China.
答案以及解析
一、单选题
1.答案：B
解析：后面的句子说明过得不错。
2.答案：B
解析：so+助动词/情态动词/be+主语“……也如此”。由于上句用的是一般过去时,所以要用so did I。故选B。
3.答案：B
解析：take place表示有计划发生， happen指偶然发生，而且 recently为现在完成时的时间状语。
4.答案：B
解析：simply仅仅;gradually逐渐地;especially尤其;luckily幸运地。根据“由于人工智能的发展,工厂工人……被机器取代。”可知,应该是“逐渐地”。故选:B。
5.答案：B
解析：yet用于疑问句的句尾，表示已经。
6.答案：B
解析："So+主语+助动词"这一结构表示"某人或某物确实怎么样"。
7.答案：B
解析：多音节的形容词其比较级要用"more+形容词"来构成。 Those指代前面出现过的复数名词。
8.答案：B
解析：百分比后面的单复数要由其所修饰的名词来确定。 students是复数。
9.答案：B
解析：不能出处玩，是因为糟糕的天气。D指好的原因。
10.答案：C
解析：What's more在意思上表示递进。"此外，还有"。A和B表示"怎么啦？"。D表示"上演的什么节目？"。
二、阅读理解
11.答案：D
解析：推理判断题。根据“The population in the world is expected to rise to about 8.5 billion by 2030, 9.7 billion by 2050, peak(峰值) at about 10.4 billion in the 2080s, and stay there until 2100, the report says.”可知,报告称,预计到2030年,世界人口将增至约85亿,到2050年将增至97亿,在2080年代达到约104亿的峰值,并一直保持到2100年。所以2091年世界人口会是104亿。故选D。
12.答案：A
解析：推理判断题。根据“The UN predicts that population growth could fall to about 0.5 percent by 2050 as fertility rates(生育率) continue to fall.”以及“On the other hand, people can live much longer than before”可知,人口生育率下降、人的寿命增加,所以养老可能会是一个大问题。故选A。
13.答案：B
解析：主旨大意题。阅读全文可知,本文主要介绍了对人口增长的预测。故选B。