中考英语专项复习阅读理解 科普环保类专.docx

1、中考英语专项复习阅读理解 科普环保类专2020中考复习科普环保类专项练习一、阅读理解When you watch TV programs about wild animals, it is surprising to see how an antelope (羚羊) can run away from a strong lion. In the wilderness, everyone has his own way to protect himself. Even plants have their own ways to fight off enemies.Over millions of

2、 years, plants have developed their own defense system (防卫系统). Chemicals are fantastically used by plants to survive (幸存). By making their leaves, flowers, roots and fruits poisonous (有毒的) to enemies, plants can fight back.One such plant is the Golden Wattle tree. The British scientist David Cameron

3、 has found when an animal eats the trees leaves, the amount (数量) of poison increases in the other leaves. “Its like the injured leaves telephoning the others to fight together against the enemy,” he said. The tree also sends defense messages to neighboring plants by giving out a special smell. Golde

4、n Wattle trees in the nearby 45 meters will get the message and produce more poison within 10 minutes. Now, if an enemy eats too many of the trees leaves, he will die.Every kind of plant or tree is good at producing a special set of chemicals. Herbivores, like rabbits, can safely eat the leaves of o

5、ne tree, but they may be poisoned by its neighbor.In this way, plants have not only developed their own defense system, but also shared it with others. This makes it impossible for a single animal to destroy even a small area of forest. 1From the first 2 paragraphs, we can learn that _. A. plants ca

6、n do nothing against their enemies B. chemicals are quite useful for plants to surviveC. an antelope can always run away from a strong lionD. leaves, roots, flowers and fruits of plants are poisonous2If animals eat one Golden Wattle trees leaves, the tree can_.A. kill the animals with a special smel

7、lB. tell other trees to come to protect itC. warn other trees against the animals on the phoneD. send defense messages to the neighboring plants3The underlined word “herbivores” in the 5th paragraph probably means animals which _.Aproduce poison Blive on small animalsClike to eat rabbits Dfeed on pl

8、ants or grass4The last paragraph of the passage suggests that this kind of defense system is _.Abad for animals Bgood for forestsChelpful to some animals Dharmful to forests5The passage is mainly about _. Athe examples of protecting forestsBthe balance between animals and plantsCthe ways of plants f

9、ighting against enemiesDthe relationship between lions and antelopesQi Haoran, a Junior 1 student, was quite busy over the past winter vacation and not just with homework. Qi, together with 10 other classmates made a volunteer group to call on people to join the Clean Your Plate Campaign (“光盘行动”). T

10、he 11 students went to many restaurants and told people the importance of saving food.“Excuse me, do you know that 950 million people around the world still havent got enough to eat? Please dont waste food.” They would say this kind of thing hundreds of times every day. The Clean Your Plate Campaign

11、 began on the Internet in January. It calls on people to reduce food waste. China in these years had serious problems with wasted food. CCTV reported in January that the food Chinese people waste every year is enough to feed 200 million people for a year. Chinese people are well known for being hosp

12、itable (好客的) and generous（大方的）.Many even feel that they lose face if their guests have eaten all the food. Luckily, the campaign has got the support of many. In a restaurant in Xinjiang, the owner give the guests who have eaten all that they ordered a sticker (贴花).People can enjoy a free meal when t

13、hey have 10 stickers. More than 750 restaurants in Beijing have begun to offer smaller dishes and encourage their guests to take leftovers (剩饭剩菜) home. To reduce food waste is a big task, and it needs time. Its important that everyone does their bit, just like Qi. Did you finish your meals today?根据短

14、文内容，从A、B、C、D四个选项中选择最恰当的答案。6What did the 11 students do in the winter vacation?A. The helped each other with homework.B. They opened a restaurant together.C. They volunteered for a campaign.D. They collected money from customers in restaurants.7In this passage the underlined word “call on ” means _.A

15、.打电话 B.号召 C.拜访 D.叫喊8The Clean Your Plate Campaign calls on people to _.A. do volunteer work B. work part time in restaurantsC. cut down on food waste D. wash your plates after dinner9From Paragraphs 4-5, we learn that _.A. wasting food is a serious problem in ChinaB. Chinese people waste the most fo

16、od in the worldC. Chinese people want to show off that they are richD. most Chinese people are afraid of losing face at the table10What did the restaurant in Beijing do to support the campaign?A. The owner would have dinner with those who had eaten up their food.B. It offered a free meal to the gues

17、ts who had finished all their food ten times.C. It gave stickers to the guests who ordered small dishes.D. It encouraged customers to take leftovers home.In nature, you may see many insects (昆虫）and animals of different colors. Have you ever wondered why? Locusts are super delicious food for birds, b

18、ut it is not always an easy job for birds to catch them. It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies. The reason is that the colors of locusts change with the colors of crops(庄稼). When crops are young, locusts look green. But when autumn

19、comes, locusts change to the yellow and brown color as crops do. Brown bears, tigers and other animals move quietly through forests. They cant be seen easily by their enemies. This is because they have colors similar to the trees. For the same reason, polar bears that live on a land of snow and ice

20、are white. Butterflies and bees living among the flowers are colorful like flowers. Soil insects are mostly dark-colored and they live under the soil(土壤） in a dark and wet environment. However, insects with colors different from plants can easily be found and eaten by others. So in order to survive,

21、 they have to hide themselves in the daytime and appear only at night. Have you ever noticed some even stranger acts? The ink fish in the sea can send out some very black ink when it faces danger. As the ink spreads over , its enemies will find themselves suddenly in a dark world. At the same time t

22、he ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all.11It is not easy for birds to catch locusts because_.A .locusts are good runners B. locusts can jump very highC. locusts are smarter than birds D. locusts can change their color12According to the pass

23、age, most soil insects_A. do not have bright colorsB. change their colors with the soilC. do not live in a dark and wet environmentD. Eat colorful insects like butterflies and bees13Whats the meaning of the underlined word”survive” in the passage?A. 繁殖 B. 产卵 C. 觅食 D. 生存14The ink fish _so that its en

24、emies will not see it?A. changes its color B. makes the water around it blackC. appears only at night D. hides itself in the sea rocks15What is the main idea of this passage?A. Some insects and animals have different skills.B. Some insects and animals are clever than we think.C. Some insects and ani

25、mals use colors to protect themselves.D. Some insects and animals can get used to the environment easily.Many children think mobile phones are cool. They come in fun colors and let you talk with friends anytime and anywhere. In the U.S., more than 90 million people use mobile phones. Many of these p

26、eople are children. For children, mobile phones are more than phone calls. They are fashionable. Most mobile phone users dont think about the health problems caused(引起) by mobile phones. Some scientists say that mobile phones give off radiation(辐射) that might be bad for the users. One newest study s

27、hows that mobile phone radiation might raise(增加) a persons chance of getting some kinds of cancer(癌症). Other scientists say mobile phones dont threaten peoples health. They say that they have not found any link(联系) between phone use and cancer. Scientists say that people can protect (保护) themselves

28、from mobile phone radiation. One way is to use a headset(耳机). Or people can make shorter call.16Many children like mobile phones because they think mobile phones are _.A. cool B. small C. cheap D. their toys17Many of the mobile phone users in the U.S. are _.A. girls B. boys C. scientists D. children

29、18Some scientists think mobile phones arent _ for users health. They causes some kinds of cancerA. bad B. good C. wrong D. helpful19The underlined word “threaten” in the passage means _.A. 威胁. B. 担心 C. 治疗 D. 证实20What should people do to protect themselves from mobile phone radiation?A. Make longer c

30、alls B. Use a headset C. Make shorter calls D. Both B and CThis March, the H7N9 virus (病毒) hit Shanghai, Anhui, Jiangsu, Zhejiang and so on. It seemed that most people who were infected(被感染) with H7N9 had the common flu. Some people suffered from a fever or a cough. Dont be afraidits not easy to be

31、infected with the virus. Here is some advice to help you protect yourself when it comes. Wash your hands. You need to wash your hands with soap and hot water before you eat, after you use the toilet, and after you touch animals, because your hands may carry viruses. Cover your nose and mouth. When someone sneezes(打喷嚏) or coughs, flu viruses can travel as far as one meter through the air, so youd better stand a proper distance (距离) while talking to someone