25分钟限时阅读天天练.doc

古之成大事者不唯有超世之才，亦有坚忍不拔之志。-苏轼25分钟限时阅读天天练第一天慧雅，做完后，不熟悉的单词，划出来，有意识的抄在问题集结本上，留给我上课讲解。（大年初二）ADo you know why different animals or pests (昆虫) have their special colors? Colors in them seem to be used mainly to protect themselves.Some birds like eating locusts (蝗虫), but birds cannot easily catch them. Why? It is because locusts change their colors together with the change of the colors of crops. When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown color as crops have. Some other pests with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night.If you study the animal life, youll find the main use of coloring is to protect themselves. Bears, lions and other animals move quietly through forests. They cannot be easily seen by hunters (猎人). This is because they have the colors much like the trees.Have you ever noticed an even stranger act? A kind of fish in the sea can send out a kind of very black liquid (液体)when it faces danger. While the liquid spreads over (散开), its enemies (敌人)cannot find it. And it immediately swims away. So it has lived up to now though it is not strong at all.1.From the passage we learn that locusts _.A. are small animalsB. are easily found by birdsC. are dangerous to their enemies D. change their colors to protect themselves2.How can pests with different colors from plants keep out of danger?A. They run away quickly.B.They have the colors much like their enemies.C. They hide themselves by day and appear at night.D. They have to move quietly.3.Bears and lions can keep safe because _.A. they have the colors much like the trees B. they move quietlyC. they like brown and gray colors D. they live in forests4.Why can the kind of fish live up to now?A. Because it is very and strong. B. Because the liquid it sends out can help it escape from its enemies.C. Because the liquid it sends out can kill its enemies.D.Because it swims faster than any other fish.5.Which is the best title for this passage?A.The Change of Colors for Animals and PestsB. Colors of Different Animals and PestsC. The Main Use of Colors for Animals and Pests D. Some Animals and PestsBIts important to learn about protecting our environment. Here is a 5R rule for us:1. ReduceIf you want to reduce waste, you should use things wisely (明智地). A large number of trees are being cut down to make paper. If everyone uses a little paper carelessly and throw it out, soon we would not have any trees left. Other things are also being wasted, and people dont know what to do with the waste in big cities. So it is necessary to reduce the waste. 2.ReuseYou should always think of reusing the usable things before throwing them out. Give your clothes you do not use or the ones which too small to the poor. In a family, you may pass on such clothes to younger brothers or sisters.3.RecycleBottles, cans (罐子) and paper can easily be recycled. By doing so we save lots of time and money. For example, coke cans are sent to a factory, where they are smashed flat (压平) and melted (融化) and the metal things are made for new coke cans.4.RecoverWhen you buy a box of apples, there may be few rotten (腐烂的) apples, you have two choices: one is to throw the whole apples away, or you could cut off the rotten parts and use the good parts. In this way, you are recovering the eatable parts of food.5.RepairIf one of the begs of your table is broken, you can repair it. If you want to change for better ones, it is better for you to sell the old things or give them to other people who can use them after doing some repair. It is true that North America is a “throw-away” society, but the time has come to change our way of life so that we can protect our environment. Every one of us should try our best.1.The “Reduce” rule mainly requires (要求) us _.A. to use things wisely B. to cut down many treesC. to use a lot of paper D. to throw away your old clothes2.Whats the right order (顺序) of recycling coke cans?a. collect the used cans b. melt them c. smash them flat d. send them to a factoryA. a b c d B. a d c b C. d b c a D. c a b d3.The “Recover” rule mainly requires us_.A.to throw waste things away B. to cover waste things with earthC. to get back the useful partsD. to throw the whole things away5.Which is the best way to do with your broken tables?A. Throwing them away. B. Requiring them.C. Selling them. D. Putting them away.CDo you know something about tree rings (年轮)? Do you know they can tell us what the weather was like, sometimes even hundreds of years ago?A tree will grow well in a climate with lots of sunshine and rainfall. And little sunshine or rainfall will limit the growth of climate by studying the tree rings. For example, to find out the weather of ten years ago, count the rings of a tree from the outside to the inside. If the tenth ring is far from the eleventh ring, then were sure that it was sunny and rainy most of that year. If it is near to the eleventh ring, then the climate that year was bad.Tree rings are important not only for studying the history of weather but also for studying the history of man. Many centuries ago there lived a lot of people at a place in New Mexico. But now you can find only sand thereno trees and no people. What happened?A scientist studied the rings of dead trees there. He found that the people had to leave because they had cut down all the trees to make fires and buildings. As all the trees had gone, the people there had to move.1._ in good climate.A. Tree rings grow far from each other B. Tree rings become thinnerC. Trees dont need sunshine or rainfall D. People can cut down most of the trees2.The scientists are interested in studying tree rings because tree rings can tell _.A.whether a tree was strong or notB. whether people took good care of the trees or notC. whether the climate was good or notD. how old the trees were3.If you want to find out the weather of twenty years ago, you should study _.A. the twentieth ring B. the tenth ring C.the nineteenth ring D. the twenty-first ring4.Why did people usually live in places with lots of trees?A.Trees could tell the change of the weatherB.Trees brought lots of sunshine and rainC.Trees could make weather not too hot or too coldD.Trees could be used for burning and for building house5.The people had to leave the place in New Mexico because _.A.had weather stopped the growth of treesB.they no longer had water and the land beca -me sandC.they didnt have enough trees for burning D.there was too much rain thereDAll our food comes from the soil . Some of us eat meat, but animals live on plants. If these were no plants, we should have no animals and meat. So the soil is necessary for life.The top of ground is usually covered with grass or other plants. Plants grow in soil, which has a dark color. This dark soil is humus, dead leaves, dead plants and animal waste make it, but this takes a long time. When the humus has been made, plants can grow well in it.All soil needs food. If we dont give it any, the plants will be weak. Animals waste is the best food for the soil, but chemical fertilizers (化肥) are also very useful. The same crop should not be grown in the same place every year; it is better to have a different crop. A change of crop and the use of a good fertilizer will keep the land in good condition.When the soil is dry, the wind blows it away. Sometimes heavy rain carries the humus down to a river. People should grow more and more trees and grass to stop wind from carrying the humus away. It takes hundreds of years to make humus, and so we must save every bit of it. Without soil, where can we grow food?1.From the text, we know people live on _.A. animal B. plant C. meat D. soil2.The word “humus“means _ in Chinese.A.微生物 B.土壤 C.腐殖土 D.粘土3.We should _ to keep the soil.A. give more fertilizers B. kill more animals C. make more humus D. grow more trees and grass4.We should save every bit of humus, because _.A.it takes a long time to make humusB.the more humus in the soil, the better plants growC.the chemical fertilizers are expensiveD.A and B5.The best title of this text should be _.A.Soil is necessary to peopleB.The same crop cant be grown in the same place every yearC.Soils food is chemical fertilizersD.Humus is hard to make第二天（初三）AWhen some plates of the earth move suddenly, an earthquake happens. Many earthquakes begin under the sea. Earthquakes may happen anywhere on the earth. They often happen near the mountains.During an earthquake, the shakings make rocks rise suddenly and even crack open. Houses fall, people are killed or hurt, and sometimes the whole villages or cities are destroyed.Can we do something to keep ourselves safe from earthquakes? Scientists have studied earthquakes and make maps that show the “earthquake belts”. In areas ) in these belts, its possible for earthquakes to happen. In these areas we should build strong houses to fight against earthquakes.In the future, scientists will be able to tell when and where an earthquake will be before they happen. They can also tell people what to do and how to do it.1.A large numberof earthquakes often happens _.A. in the area B. on land C. at night D. next to mountains2.The reason for an earthquake is _.A.the result of rock plate sudden movementB.that there are so many plates on the earthC.that the sea is too deepD.rocks cracking open3.A map showing the earthquake belts will tell people _.A.what kind of houses to buildB.what kind of houses can stay up in an earthquakeC.where earthquake may happenD.how to keep themselves safe during an earth -quake4.In the future well be no longer so afraid of earthquakes _.A.with the help of scientists exact prediction (预报)B.because of a map showing the “earthquake belts”C.because we can guess the date and place of earthquakesD.as scientists know what to do and how to do it5.Choose the best title fro the passage.A.An Earthquake B. A Scientist and an EarthquakeC. How to Fight Against Earthquake D. Earthquakes Today and TomorrowBWe know the mosquito very well. Mosquit -oes fly everywhere. They can be found almost all over the world, and there are more than 2,500 kinds of them.No one likes the mosquito. But the mosquito may decide that she loves you. She? Yes, she. Its true that male mosquito doesnt bite and only the female mosquito bites because she needs blood to lay eggs. She is always looking for things or people she wants to bite. If she likes what she finds, she bites. But if she doesnt like your blood, she will turn to someone else for more delicious blood. Next time a mosquito bites you, just remember you are chosen. Youre different from the others!If the mosquito likes you, she lands on your body without letting you know. She bites you so quickly and quietly that you may not feel anything different. After she bites, you will have an itch (痒) on your body because she puts something from her mouth together with your blood. By the time the itching begins, and she has flown away.And then what happens? Well, after her delicious dinner, the mosquito feels tired. She just wants to find a place to have a good rest. There, on a leaf or a wall, she begins to lay eggs, hundreds of eggs.1.“Mosquito” means _ in Chinese.A.苍蝇 B.蜻蜓 C. 跳蚤 D.蚊子2.We know mosquitoes very well because _.A. they can be found easily B. they fly here and thereC. there are many kinds of them D. they can fly3.If the mosquito doesnt bite you, it will _.A. get angry with you B. be afraid of you C. make a lot of noise D. choose another one4.The mosquito bites you _.A. when youre asleep B. because you have choose it C. too quickly to let you know D. but doesnt like you5.Which of the following sentences is wrong?A. The itching begins after the mosquito bites you . B. You feel terrible when the mosquito bites you.C. Mosquitoes use blood to lay eggs. D. All the mosquitoes dont like to bite people for blood.CLast week, 169 Junior 1 students at No. 35 Middle School of Shenyang took their first no-teacher exam. After the teacher handed out the exam paper, he left the room and never came back. A student collected in the papers when the exam ended. “That test was not only a test of knowledge, but also a test of moral . We wanted to show students how important honesty is, ”said Cai Wenguo, the schools headmaster. The school says no cheating happened in the test. Next year, it wants 80 of its exams to be without teachers. But students have different ideas. “I was happy and excited during the exam because my teachers trusted me, ”said Lang Yudan, a 13-year-old girl in Class 11. “Schools must trust students a lot not to use invigilators （监考人）. But I think it is too early. Some students will cheat if there are no invigilators. And the students will not be able to ask for help when needed. ”said Hua Sha. “I dont like having invigilators in exams. When they walk around the classroom, they make me nervous. I would get higher marks without them in the room because I would feel more relaxed. ”Liu Qingxi said. “I think its very important to have invigilators in exams. Many students want to check their answers with each other after they have finished papers. And they can also keep the classroom in order when something unusual happens. They may make me nervous, but I still think we need them. ”Shangguan Yuan said. Not using invigilators may be a good idea. But before using it, schools must tell students the importance of honesty and try to find ways to solve something unusual in exams. 1. The passage mainly （主要地）talks about _. A. how to pass an exam B. how to make students honest C. whether there is cheating in exams D. whether invigilators are needed in exams 2. No. 35 Middle School of Shenyang held a no-teacher exam to _. A. let the students have a good rest B. teach the students in a better way C. help all the students pass the exam D. find whether the students were honest 3. From what the students have said, we know _. A. invigilators really help them a lot B. all of them think it is a good idea C. something unusual never happens in exams D. not all of them agree with the head4. What does Hua Sha think about no-teacher exams? A. Its a good idea to have no -teacher exams but something must be done first. B. If there are no invigilators, the students will certainly get lower marks. C. Exams without invigilators will never be held since students are not honest. D. She thinks its the best way to show that schools trust their students a lot. 5. In the sentence “And they can also keep the classroom in order when something unusual happens”“they”refers to （指_. A. students B. headmasters C. invigilators D. schoolsD The world is not only hungry, it will also be thirsty for water. About 97% of water on the earth is sea water, or salt water. Man can only drink or use the other 3of the fresh water which comes from rivers, lakes and underground. On the other hand, because the number of people in the world is becoming larger and larger, more and more fresh water is needed. So water shortage becomes a big problem. How can we work out this problem? Scientists have found some ways to turn salt water into fresh water. One important way is to boil sea water with high heat until vapor （蒸汽）rises, leaving the salt. In this way, a lot of fresh water can be made quickly. But heating is not the only way to get fresh water. Other ways are tried, for example, digging deep wells, keeping rain water and preventing rivers from being polluted. Which way is the best? To get the most fresh water for the least money is the best. 1.Where does the fresh water people need come from? A. Sea water. B. Rivers and lakes. C. Underground. D. Both B and C. 2.From this passage we know fresh water _. A. only comes from the rain B. can be used in many ways C. can be found in many factories D. is needed by more and more people 3.The word shortage in this passage means _. A. being enough B. being short of C. being short for D. being less 4.What is the writer mainly talking about in this passage? A. The ways of getting fresh water. B. How to use fresh water in our daily life. C. All people in the world should save water. D. Different ways of making water in different places. 5. Which of the following is true? A. Hunger is the only problem in our world. B. Water shortage is the only problem in our world. C.Scientists dont want to spend money solv -ing the water problem. D. Scientists have been working hard and have made much progress in solving water prob -lem.第三天（初四）AA man once had a dream about the Black Forest in Germany. In his dream he was walking in the forest when two men ran out and tried to throw him to the ground. He ran off as fast as he could, but they followed him. He reached a place where he saw two roads in front of him, one to the right and the other to the left. Which road should he take? He heard the two men behind him, getting nearer, and at the same time he heard a voice in his ear. It told him to go to the right, and he did so. He ran on and soon came to a small hotel. He was received there kindly and given a room, and he was saved from the two men. That was the dream.Twenty years later he was really in the Black Forest and, as happened in the dream long ago, t