内容正文:
Unit 7 Welcome to the unit
综合练习
一、根据句意及提示完成单词拼写
1. I took some photos of yellow _________(叶子).
2. Anhui has a lot of _________ (降雨量)in summer, helping rice farming.
3. Kunming is famous for its comfortable _________ (气候)all over the country.
4. Sharks are at the top of the food chain(食物链)in the ocean's_________ (生态系统).
5. _________ (企鹅)live in cold places. They often stand close together to keep warm.
二、用括号内所给词的适当形式填空
1. There _________ (lie) a beautiful lake at the foot of the mountain.
2. __________ (difference) animals play important roles in their ecosystems.
3. The girl is so ___________ (friend) that almost everyone in the class is happy to communicate with her .
4. Some colourful fish are swimming above the _________ (reef) like they’re exploring a new world.
5. Half of the girls in my class _________ (be) interested in science, and they often watch TV programs about science.
三、用方框里所给词的适当形式填空
look like between...and half of so...that be home to
1. It’s said that over _________ the area is covered with ice all year round.
2. China’s “Sky Eye” __________ a really big pan. It can help scientists search more in space.
3. Sometimes it’s difficult for us to make a balance _________ study _________ playing.
4. With a height of about 600 meters, Mount Huaguo __________ different kinds of animals and plants.
5. The earthquake in this city was _________ sudden _________ it brought great pain and loss to people.
四、根据汉语意思完成句子
1. 珊瑚礁通常生长在一起。
_________ _________ usually grow together.
2. 鲸看起来像鱼,但它们是哺乳动物。
Whales_________ _________ fish, but they are mammals.
3. 你今天必须完成至少一半的工作。
You must finish at least_________ _________ the work today.
4. 湿地是很多野生动物的栖息地。
The wetlands_________ _________ _________ a lot of wildlife.
5. 这道数学题太难了,我解不出来。
This Maths problem is _________ _________ _________ I can't work it out.
五、单项选择
1. In many countries, lions are in zoos, _______ in Africa, lions run free across the grasslands.
A. and B. but C. so D. also
2. We all know it’s very dry in deserts because there’s _______ rainfall.
A. few B. little C. a little D. a few
3. The rainstorm was _______ awful _______ streets suddenly turned into rivers.
A. too; to B. such; that
C. to; too D. so; that
4. The Amazon Rainforest _______ countless species of plants and animals.
A. is home to B. is home in
C. is home on D. is home into
5. —Would you like _______ to drink, please?
—_______ will do.
A. something; Anything B. something; Something
C. anything; Something D. everything; Anything
六、情景交际
A: 1._________
B: Yes, our garden does look a bit boring.
A: But if we plant some trees, our garden will be beautiful.
B: 2._________ Trees can not only make the garden look better but also reduce air pollution.
A: You've got the point. So I bought some young trees.
B: 3._________
A: Of course, they will arrive this afternoon. Would you like to plant trees with me?
B: 4._________ See you this afternoon.
A: 5._________
A. Yes, I am.
B. See you.
C. Are you serious? D. I agree with you.
E. Yes, I’d love to.
F. What do you think we should do?
G. Do you think our garden looks a bit boring?
七、完形填空
Our science team 1______ in Antarctica last week. The first thing we noticed was the icy landscape and the curious 2______ waddling near the shore. As we set up camp, Dr. Lee 3______ at a unique reef formed by cold-water corals. "These 4______ structures are vital to the local ecosystem," she explained. Suddenly, dark clouds gathered. The 5______ here is rare but intense. We hurried to check 6______ on the ice. "Antarctica’s 7______ is changing," said Dr. Lee, showing data. "Even a small difference in temperature 8______ everything." Later, we found leaves from ancient plants preserved in ice—evidence of a warmer past. "Only a few such 9______ exist," Dr. Lee said in low10______.
1. A. reached B. visited C. entered D. arrived
2. A. corals B. penguins C. fishes D. seals
3. A. shouted B. smiled C. pointed D. stared
4. A. penguin B. coral C. ice D. animal
5. A. snowfall B. rainfall C. wind D. storm
6. A. movements B. locations C. instruments D. reefs
7. A. wildlife B. landscape C. climate D. ice
8. A. protects B. records C. affects D. destroys
9. A. instruments B. fossils C. reefs D. data
10. A. voice B. noise C. sound D. head
八、阅读理解
The Solomon Islands is a country in the Pacific Ocean. Last October, a group of scientists went there on a research trip. Guess what they found? The largest coral colony (珊瑚群) in the world!
Coral reefs may look like rocks, but they are made up of tiny animals called “polyps (珊瑚虫)”. Many polyps of the same kind form a colony. Usually, a coral reef is built out of many different colonies. This newly found coral reef, however, is just one colony. It is made up of around a billion polyps of the same kind. This huge colony is about 34 meters wide, 32 meters long and 5.5 meters high. In all, it covers about the same area as five tennis courts. It is so large that it can be seen from space. It is also very old— between 300 and 500 years!
Coral reefs play a big role in the ocean. They are home to many sea animals, such as shrimp, crabs and fish. Healthy coral reefs also protect shorelines (海岸线) from flooding during storms.
Sadly, over the years, climate change has warmed up the world’s oceans. This has caused many coral reefs to die and turn white. But this huge coral colony is very healthy.
It may be able to live in warmer waters. That is good news, as this colony may help produce new coral colonies that can live in warmer waters. The huge coral colony is also important for the Solomon Islands. It was found in the waters near one of the islands, Malaulalo. The country has protected its waters in the past! It will protect the area even more in the future.
1. What did the group of scientists find in The Solomon Islands?
A. The largest coral colony.
B. The largest animal colony
C. The largest bird colony
D. The largest coralfish colony
2. The newly found coral reef is very special because it ______.
A. is very young
B. is much healthier than other coral reefs
C. is so large and made up of just one colony
D. is found in very warm waters
3. What is one of the functions of healthy coral reefs according to the passage?
A. It provides food for seabirds.
B. It helps maintain the balance of the ocean.
C. It offers a habitat for numerous sea animals.
D. It promotes the growth of seaweed in the ocean.
4. The newly found coral reef is good news for the environment, because it ______.
A. may slow down climate change
B. can be used to save dead white coral reefs
C. can cool down the waters
D. may help produce new coral colonies
5. What would the future of the coral colony near Malaulalo be like?
A. It will be harmed by climate change.
B. It will be under the country’s protection.
C. It will be moved to a warmer place.
D. It won’t produce more new coral colonies.
九、短文填空
Water is 1. i_________for all living things on earth. The water cycle is a natural process that takes water from the ground and the sky and brings it 2. b_________to earth again.
It is a cycle that happens the whole year and is most active from March to June in China. The water cycle always begins with water vapour (蒸气).
When it’s hot outside, you can see clouds forming in the sky. These clouds are 3. m_________of water vapour that comes from the ground, plants and 4. r_________.
As water vapour rises into the sky, it cools down and becomes clouds. After that, clouds travel through the sky and fall back to earth as rain or snow. Then, water runs through rivers and oceans and finally returns to earth again in different forms like rainwater or snow.
The water cycle plays an important role in protecting our earth’s 5. c_________. It 6. p_________ us with water to drink and keeps our climate healthy. On top of that, it takes water from rivers and oceans and brings it to the areas that don’t have enough water. Without the cycle, we would 7. f _________ many problems. When there is too much water in one place, it becomes a 8. f_________.
When water is badly in 9. n_________ , it becomes a drought (旱灾). Besides, water vapour can take heat from the sun and keep our planet cool.
The water cycle is a natural process that keeps our planet alive. It’s important for plants and animals to drink water and for our rivers to stay flowing with water.
Understanding the water cycle can help us enjoy the beauty of nature, know how our planet works and develop better methods to 10. p_________our earth. And that is a responsibility (责任) we should take on.
参考答案
一、1.leaves 2.rainfall 3.climate 4.ecosystem 5.Penguins
二、1.lies 2.Different 3.friendly 4.reefs 5.are
三、1.half of 2.looks like 3.between, and 4.is home to 5.so, that
四、1.Coral reefs 2.look like 3.half of 4.are home to 5.so difficult that
五、1-5BBDAA
六、1-5GDCEB
七、1-5 DBCBB 6-10 CCCBA
八、1-5ACCDB
九、1.important 2.back 3.made 4.rivers 5.climate 6.provides 7.face 8.flood 9.need 10.protect
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