初中英语解题思路—科普环保类(阅读理解)

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1、科普环保类专项练习学校:_考号：_题号一总分得分评卷人得分一、阅读理解When you watch TV programs about wild animals, it is surprising to see how an antelope 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 years, plan

2、ts have developed their own defense system . Chemicals are fantastically used by plants to survive . By making their leaves, flowers, roots and fruits poisonous to enemies, plants can fight back.One such plant is the Golden Wattle tree. The British scientist David Cameron has found when an animal ea

3、ts the trees leaves, the amount 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. Golden Wattle trees in the nearby 45 met

4、ers 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 one tree, but they may be poisoned b

5、y 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 can do nothing against their enemies

6、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 smellB. tell other trees to e to protec

7、t 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 plants or grass4The last paragraph of the

8、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 fighting against enemiesDthe relationship

9、 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 . The 11 students went to many restaurants and told

10、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 began on the Internet in January.It calls on peopl

11、e 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 hospitable and generous大方的.Many even feel that they lose

12、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 .People can enjoy a free meal when they have 10 stickers.More than 750 restaurants in Beijing have beg

13、un to offer smaller dishes and encourage their guests to take leftovers 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 vacatio

14、n?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.打 B.号召 C.拜访 D.叫喊8The Clean Your Plate Campaign calls on people to _.A.do volunteer

15、 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 food in the worldC.Chinese people want to show off that they are richD.most Chinese people ar

16、e 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 guests who had finished all their food ten times.C.It gave stickers to the guests who ordered small

17、 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,but it is not always an easy job for birds to catch them.It is neither because locusts are good jumpe

18、rs or runners nor because they are smarter than their enemies. The reason is that the colors of locusts change with the colors of crops. When crops are young,locusts look green. But when autumn es, locusts change to the yellow and brown color as crops do. Brown bears,tigers and other animals move qu

19、ietly 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 are white. Butterflies and bees living among the flowers are colorful like flowers. Soil insects are mostly da

20、rk-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,they have to hide themselves in the daytime and appear only at night. Have you ever noticed some even stranger a

21、cts? 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 the ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all.11It is not e

22、asy 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 passage, most soil insects_A.do not have bright colorsB. change their colors with the soilC. do not live in a dark an

23、d wet environmentD. Eat colorful insects like butterflies and bees13Whats the meaning of the underlined wordsurvive in the passage?A. 繁殖 B. 产卵 C. 觅食 D. 生存14The ink fish_so that its enemies will not see it?A. changes its color B. makes the water around it blackC. appears only at night D. hides itself

24、 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 animals use colors to protect themselves.D. Some insects and animals can get used to the environment easily.Many childre

25、n think mobile phones are cool. They e 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 people are children. For children, mobile phones are more than phone calls. They are fashionable. Most mobile phone users

26、 dont think about the health problems caused by mobile phones. Some scientists say that mobile phones give off radiation that might be bad for the users. One newest study shows that mobile phone radiation might raise a persons chance of getting some kinds of cancer. Other scientists say mobile phone

27、s dont threaten peoples health. They say that they have not found any link between phone use and cancer. Scientists say that people can protect themselves from mobile phone radiation. One way is to use a headset. Or people can make shorter call.16Many children like mobile phones because they think m

28、obile phones are _.A. cool B. small C. cheap D. their toys17Many of the mobile phone users in the U.S. are _.A. girls B. boysC. scientists D. children18Some scientists think mobile phones arent _ for users health. They causes some kinds of cancerA. bad B. goodC. wrong D. helpful19The underlined word

29、 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 calls B. Use a headsetC. Make shorter calls D. Both B and CThis March, the H7N9 virus hit Shanghai, Anhui, Jiangsu, Zhejiang and so on. It seemed that most

30、people who were infected with H7N9 had the mon flu. Some people suffered from a fever or a cough. Dont be afraidits not easy to be infected with the virus. Here is some advice to help you protect yourself when it es. Wash your hands. You need to wash your hands with soap and hot water before you eat

31、, after you use the toilet, and after you touch animals, because your hands may carry viruses. Cover your nose and mouth. When someone sneezes or coughs, flu viruses can travel as far as one meter through the air, so youd better stand a proper distance while talking to someone who has a cold. And al

32、ways cover your mouth and nose with a piece of paper when you sneeze or cough, and then clean your hands.Wear a mask. Some doctors say that masks can stop the flu as much as 80%, but if you dont wash your hands often, its no use wearing a mask. And its necessary to wear the mask in the groups of peo

33、ple.Do sports often. Exercises will help make your body strong enough to resist the virus. 21When did the H7N9 virus hit Shanghai?AIn March, 2013.BIn May, 2013.CIn March, 2012.22Which of the following is TRUE according to the passage?ASome people who were infected with the H7N9 virus had a toothache

34、.BYou should cover your mouth and nose with a piece of paper when you sneeze or cough.CSome doctors say that masks can stop the flu as much as 100%.23How many ways to stop the virus are mentioned in the passage?AThree.BFour.CFive.24What does the underlined word resist mean in Chinese?A抵抗B传播C感染25What

35、s the main idea of this passage?AIt tells us how to wash hands.BIt tells us why we should use masks.CIt gives us some advice on how to protect ourselves when the H7N9 virus es.Carrots are grown on farms and in small family gardens all over the world. They are easy to plant and easy to harvest. They

36、have a good taste. When people think about carrots, they usually think they are a kind of long, thin, orange-colored vegetable. In fact, carrots are in many different sizes and shapes. And not all carrots are orange. Carrots should be grown in a field that does not have water for a long time. The ea

37、rth also should not be too hard. To prepare your carrot garden, dig up the earth and turn it over. Weather, soil condition, and time affect the taste of carrots. Warm days and cool nights are the best time to grow great delicious carrots.The best way to decide if a carrot is ready to be harvested is

38、 by its color. Usually, the brighter the color is, the better the taste is.Most people do not know that carrots can be grown during the winter months. If the winter is not cold enough to freeze the ground, you can grow carrots the same way as you do during the summer months.Carrots are prepared and

39、eaten in many different ways. They are cut into thin pieces and cooked with other vegetables or meat. Or, they are washed, and eaten just as they e out of the ground. 26Carrots are easy to plant but hard to harvest.27Carrots should be grown in a field without water for a long time.28The best way to

40、decide if a carrot is ready to be harvested is by its size.29Everyone knows that carrots can be grown during the winter months.30We can prepare and eat carrots in many different ways.Hi Brad,Its good to hear from you again. I find that Im not good at writing positions. Its hard for me to prepare the

41、 form of a position and organize sentences. Could you tell me how to deal with this problem? I would really appreciate if you offer me some good methods. Best wishes, CindyHi Cindy,A position is really a story and any story is told to an audience. There is a form for this and it is in three parts. F

42、irst, tell them what you are going to tell them. Then tell them, and finally tell them what you told them. Parts one and three are short and most of the information is in part two. It works like this.Lets say you are asked to write a 200-word position about your visit to the Great Wall. You would be

43、gin with an opening sentence or two saying something like The Great Wall of China is a national landmark that is famous around the world. I visited it last summer and I want to tell you about it. That uses about 25 words to tell them what you are going to tell them.The second part would be about 150

44、 words and would contain information about the Great Wall such as how long it is, when it was built, who built it and why, the fact that it is one of the seven wonders of the world and you would talk about how you felt and what you thought when you visited this national treasure. This is telling the

45、m.Finally, you would use about another 25 words to say something like That was my first visit to the Great Wall and it was a very emotional experience to actually touch something so old and famous.每个中国人至少参观长城一次.I plan to go back whenever I can. Here, you are telling them what you told them in the st

46、ory and wrapping it all up into a neat package. This formulaworks for both positions and speeches and I think you will find it helps to organize your thoughts. I hope its helpful.Best wishes, Brad Franklin31将文中处的画线部分翻译成汉语：.32 试写出文中处画线部分landmark的汉语意思：.下面有四个在文中出现的单词,请找出画线部分发音哪个与众不同? .A. work B. word C

47、. information D. world33将文中处的汉语翻译成英语： .34从文中找出适当的词组填空：How I wish to get a letter from you soon!How I wish to _ _ you soon!35用英语回答问题：Whats the main idea of the passage? .When you look up into the sky at night, have you ever felt that your eyes are playing tricks on you? It seems that the stars are mo

48、ving all the time.Actually, there is nothing wrong with your eyes. This twinkling effect is called scintillation . Scintillation happens because of air movements in the earths atmosphere . Light is bent when it travels through different parts of the earths atmosphere. As the air in the earths atmosp

49、here is moving all the time, the light from the stars looks as if it is moving too.The same thing also happens to things on the ground. On a very hot and shiny day, if you look at the road, the image in the distance is not clear and things move slightly. You can also see the same effect if you drop

50、a rock into water. The rock appears a little unclear under the moving water.This twinkling effect causes a lot of problems for astronomers since they cannot observe the stars clearly. A telescope was sent into space so that the air movements in the atmosphere could be avoided . It took a long time t

51、o build the space telescope but finally in 1990, a huge space telescope called the Hubble Space Telescope was successfully sent into space. Since then, astronomers have many important observations that have helped people understand space better.根据短文内容,选择最佳选项. 10分36What happens to the light from the

52、stars we see when the air in the earths atmosphere is moving? A. It looks even brighter.B. It looks as if it is bent.C. It looks as if it is moving.D. It looks like drops of rain.37Scintillation also happens on according to the passage. A. rainy days B. shiny daysC. cloudy days D. windy days38What c

53、an you see when you drop a rock into the water? A. The rock gets broken.B. The rock bees unclear.C. The water bees much polluted.D. The water does not move anymore.39The underlined word observe means .A. watch B. listen C. draw D. explain40Why is scintillation a problem for astronomers? A. The stars

54、 never stay still.B. It makes the stars too dark to see.C. It makes astronomers feel too hot to work.D. Astronomers cannot observe the stars clearly.Imagine the situation. You are driving along a desert or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then y

55、our car breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a GPS with you. This invention may be able to help you. It is a device which uses satellites to find the users position. It can find your position to within 20 metres. A GPS cannot start y

56、our car, but at least you will know where you are.GPS, which means Global Positioning System, is a small radio receiver. It looks like a mobile phone. You can hold it in your hand, or put in your pocket. It is sometimes put into a watch or a telephone. We also find GPS devices in cars, planes, or bo

57、ats. Some of these devices have electronic maps, so you know where you are. For example, in a city they can tell you the name of the street.There are three parts to the Global Positioning System. The first part is the receiver. You can hold it in your hand, or have it fixed into your car, plane, etc

58、. The second part is a group of satellites orbiting the Earth. The receiver contacts at least four of the satellites and calculates its position. The third part of the system is a network of ground stations. They are all over the world. They control the satellites and make sure they are working well

59、.Some people think that in the future the GPS will be as mon as the mobile. They are being cheaper and more and more accurate. There are also new uses for the GPS. Perhaps they will bee like watches. Everyone will have one and you will never be lost again.41According to the passage, with the help of

60、 the GPS, people _.A.cant be lost in a new cityB.cant find their way in different countriesC.can learn about the culture of an unknown placeD.can spend the least time getting to another place42We can learn from the passage that _.A.there are three parts to the GPSB.a GPS cant be put into a watchC.a

61、GPS can help you start your carD.the GPS are being more and more expensive43The underlined word They in paragraph 3 means _.A. Receivers B. GPS devices C. Satellites D. Ground stations44The passage is mainly about _.A. the history of the GPS B. the introduction of the GPSC. the shape of the GPS D. the three parts of the GPS45What can we infer from the passage?A.All GPS devices have electronic maps.B.People in many countries will use the GPS for free.C.The receiver of the GPS contacts at least five of the satellite