内容正文:
Unit 3
Ⅰ. 根据语境用a、an、the或/填空。
1. I saw _______ old man in the street. He was walking his dog.
2. I think autumn is _______ best time of the year in Xiamen.
3. We went to _______ museum in Beijing, but I don't remember which one.
4. It's raining. Remember to take _______ umbrella.
5. They usually play _______ table tennis on Sunday morning.
6. My sister began to play _______ piano with others.
Ⅱ. 根据材料内容,从方框中选择恰当的单词填空,使材料意思完整、通顺,注意形式变化,每词限用一次。
cause, if, problem, risk, above, water, huge, billion, local, increase
New York City in the US is a popular place for people to visit. However, the city faces a big (1)_______. The buildings there are too heavy for the ground they stand on.
There are over one million buildings in the (2)_______ city and more than eight million people live there. That adds up to (总共是) about 764 billion kilograms. It is (3)_______ the city to sink (下沉) 2 mm each year.
2 mm may not sound like much, but it is still not good. Some parts of the city are only 1 metre (4)_______ sea level. If the city keeps (继续) going down, (5)_______ from the sea will come up to the streets in a few decades (十年). While the population in the city (6)_______, people will need to build more buildings. (7)_______ they build them near the sea, it will make things even worse.
New York City is not alone in facing this problem. Some cities in other parts of the world are also at (8)_______ of disappearing (消失) because of sinking. Jakarta, the capital of Indonesia, is sinking up to 17 cm each year. The government needs to protect the 10 million (9)_______ people, so it plans to move the capital to another place. It will take about ten years and cost about 33 (10)_______ dollars (美元).
Ⅲ. 根据世界人口增长图,回答以下问题。
1. What was the world's population in 1960?
________________________________________________________________
2. When did the world's population become 8 billion?
________________________________________________________________
3. How long did it take for the world's population to grow from 4 billion to 5 billion?
________________________________________________________________
4. How long did it take for the world's population to grow from 7 billion to 8 billion?
________________________________________________________________
5. Did the world's population increase quickly or slowly in the last 60 years?
________________________________________________________________
【答案】
Unit 3
Ⅰ. 1. an / the 2. the 3. a 4. an / the 5. / 6. the
Ⅱ. 1. problem 2. huge 3. causing 4. above 5. water
6. increases 7. If 8. risk 9. local 10. billion
Ⅲ. 1. 3 billion. 2. In 2022. 3. 13 years. 4. 11 years.
5. It increased quickly.
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