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Scientists are trying to make the deserts ,which get very little rain, into good land again. They want to bring water to the deserts,so people can live and grow food. They are learning a lot about the deserts. But more and more of the earth is becoming desert all the time. Scientists may not be able to change the desert in time.
Why is more and more land becoming desert?Scientists think that people make deserts.People are doing bad things to the earth against the scientists’ wish.
Some places on the earth don’t get much rain. But they still don’t become deserts.This is because some green plants are growing there.Small green plants and grass are very important to dry places.Plants don’t let the sun make the earth even drier. Plants do not let the wind blow the dirt away.When a bit of rain falls,the plants hold the water. Without plants, the land can become desert more easily.
小题1:Deserts ____________ .
A.never have any plants or animals in them
B.can all be turned into good land before long
C.are becoming smaller and smaller
D.get very little rain
小题2:More and more land is becoming desert  because____________.
A.plants can’t grow there
B.there is not enough rain
C.people haven’t done what scientists wish them to do
D.scientists know little about the deserts
小题3:Small green plants are very important to dry places because ________
A.they don’t let the sun make the earth even drier
B.they don’t let the wind blow the soil away
C.they hold water
D.All of the above.
小题4:After reading this passage, we learn that _____________ .
A.plants can keep dry land from becoming desert
B.it is good to get rid of the grass in the deserts
C.all places without much rain will become deserts
D.it is better to grow crops on dry land than to cut them

答案

小题1:D
小题2:C
小题3:D
小题4:A
解析

试题分析:根据文章内容可知植物对于水土保持的重要性。
小题1:D 细节题。根据第一段第一句Scientists are trying to make the deserts ,which get very little rain说明D正确。
小题2:C 推理题。根据第二段最后一句People are doing bad things to the earth against the scientists’wish。说明人们的做法违背了自然规律,故C正确。
小题3:D 细节题。根据文章第三段2,3,4行.Small green plants and grass are very important to dry places.Plants don’t let the sun make the earth even drier. Plants do not let the wind blow the dirt away.When a bit of rain falls,the plants hold the water.说明ABC三项都是Small green plants的作用,故D正确。
小题4:A 推理题。根据文章第三段内容可知植物对于水土保持是非常重要的。故A正确。
点评:对于环保类短文考生已经非常熟悉,注意细节题的把握和理解,提升推理能力。
核心考点
试题【Scientists are trying to make the deserts ,which get very little rain, into good】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
We’ve heard about radiation from the damaged nuclear reactors in Japan reaching American shores. Experts say so far there is no reason to worry, and point out that we meet radiation every day. Where and how? NPR’s Renee Montagne posed that question to Peter Caracappa, a radiation safety officer and professor of nuclear engineering.
MONTAGNE: How many things emit radiation?
Dr CARACAPPA: Well, radiation and radioactive material is a part of nature. So everything that’s living has some amount of radiation coming from it—a very small amout. Plus there’s radiation in the ground and the air.
So the extremes are uranium in the soil to bananas?
Yes.
By the way, why do bananas have radiation?
Bananas have a lot of potassium(钾). And a small amount of potassium naturally is called potassium 40, which is radioactive
What’s the difference between radiation that’s harmful and not harmful?
Well, the term radiation can apply to a lot of different things. But the harmful radiation is ionizing(离子)radiation. It has enough energy that it can make chemical changes in material. We could get ionizing radiation from an X-ray, for example. It’s the kind of radiation that causes cancer.
The broader definition of radiation includes a lot of things that we call non-ionizing radiation. That includes everything like radio waves and visible light and your microwave.
So what then is the largest contributor of ionizing radiation?
For the natural sources of ionizing radiation, actually the biggest chunk of that tends to come from radon(氡), which is a radioactive material that is present in the air. It can become a concern when it builds up in low-lying areas of homes like basements.
Would it be fair to say that most people do not need to worry about the danger of being exposed to radiation?
I would say that the everyday exposure to radioation that we meet contributes an extremely tiny risk to our life or to our health compared to all of the other risks that we meet in our day-to-day life.
小题1:We can infer from the first paragraph that radiation is______.
A.rareB.powerfulC.dangerousD.common
小题2:The passage may be _______.
A.an interviewB.an argumentC.a talk show programD.a science report
小题3:Whether radiation is harmful or not depends on______.
A.whether it has a small amount of potassium
B.whether it changes chemical in materials.
C.whether it has energy to change materials
D.whether it is visible in life
小题4:The purpose of writing this passage is to _______.
A.advise on how to protect us from radiation
B.analyze what causes radiation in daily life
C.warn people of the danger of radiation
D.expect people not to fear everyday radiation

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Joker found one of the biggest diamonds in the world right in his own back yard. He sold the stone to a diamond dealer for over three hundred thousand dollars. In New York, the diamond was resold---this time for almost eight hundred thousand dollars. The true value of a diamond is never known until it has been cut. Once cut successfully, its value can increase a thousand times. It"s easy to understand why the owner of Joker"s diamond went to the best diamond cutter he knew, Kaplan. The cutter studied the diamond for twelve whole months.
When he felt he was ready to start work, he discovered a flaw (瑕疵) . He had to begin his calculations all over again, or he might have made the stone useless. Six months passed, and Kaplan finally said to the owner, “I am ready to start my work. There will be one excellent diamond that will be comparable one excellent diamond of first-class quality (质量)  " Kaplan waited a few more days until he felt he was in the best physical and mental (精神的) condition(条件) possible. He picked up his tools (工具) and held his breath as he made the diamond exactly as he promised.
小题1:Joker found one of the biggest diamonds in the world_________.
A.in a minuteB.at the foot of a big mountain
C.in his own back yardD.in a garage (汽车库)
小题2:A diamond dealer is a person ___________.
A.in the diamond businessB.who stole diamonds
C.who cuts diamondsD.who sells diamonds
小题3:When the diamond was resold,____________.
A.the dealer lost a lot of money
B.Joker made some more money
C.the dealer got 800, 000 dollars
D.Kaplan got 800,000 dollars
小题4:The owner of the diamond thought that if the diamond was cut successfully it might be worth_________.
A.$ 300, 000B.$ 500,000
C.$ 300, 000D.$ 800,000,000
小题5:Kaplan studied the diamond for____________.
A.more than one and a half years
B.more than half a year
C.over eight months
D.more than nineteen months

题型:不详难度:| 查看答案
Are you worried by the rising crime rate? If you are, you probably know that your house, possessions(财产) and person are increasingly in danger of suffering from great rise in the cases of burglary(夜盗;抢劫) and attack.
Figures show an ever-increasing crime rate, but it is only too easy to imagine "It will never happen to me". Unfortunately, statistics show that it really can happen to you and, if you live in a large city, you run twice the risk of being a victim.
Fortunately, there is something definite which you can do. Protect Alarms can help to protect your house with a burglar alarm system(报警系统) which is effective, simple to operate and easily affordable.
You must remember that owning a burglar alarm is no indication(暗示) that your house is packed with valuable possessions. It quite simply indicates to unwelcome visitors that yours is one house they will not break into easily, so they carry on to an unprotected house where their job is made a lot easier.
Send now for our free leaflet(宣传册) telling you how we can Protect Alarm your house quickly, easily and cheaply. Complete and tear off the slip below and post it to us. Postage is free. Also, telephone us on 327 6721 where we have a round-the-clock answering service. It costs nothing to find out about Protect Alarm.
小题1:Anyone who takes an interest in the crime rate will, according to the text, be aware that ___________.
A.more burglars are being caught than ever before
B.people have more possessions to worry about nowadays
C.burglars are more at risk than they used to be
D.homes are more likely to be broken into nowadays
小题2:It seems that people who live in cities are ____________
A.more often victims than those living in other areas
B.of the opinion that statistics are wrong
C.twice as well as people living in other areas
D.of the opinion that burglars only rob unprotected homes
小题3:The article suggests that possessing an alarm system will _________.
A.show burglars that you have something worth stealing
B.persuade burglars not to break into your house
C.make the burglars" job less complicated
D.persuade burglars to try again another time
小题4:In order to find out more information about this alarm system one can _______.
A.buy a leaflet
B.write enclosing a stamped, addressed envelope
C.sign a contract
D.phone at any time of day or night
小题5:The underlined word "Figures" in the second paragraph can be replaced by"      "
A.PicturesB.FingersC.NumbersD.Mathematics

题型:不详难度:| 查看答案
Derrius Quarles, 19, had an unhappy childhood. But the Chicago teen didn’t give up. He tried his best and won $1 million in college scholarships (奖学金)! Now Derrius is a successful college student with a bright future.
When Derrius was 4, his father was killed. His mother couldn’t take care of him because of taking drugs. Derrius and his 9-year-old brother sometimes had to steal food to eat. Derrius felt different from other kids. In seventh grade, Derrius went to live in a foster home (寄养家庭). His foster parents weren’t nice to him. They told him that he’d never be anything in life.
Derrius didn’t do his best in school. The summer after ninth grade, that changed. Derrius had signed up for a biology class. He didn’t go to class the first day. On the second day, he showed up late. His teacher took him outside. She told him he was smart, but that he was wasting his potential (潜力). The talk inspired him and he planned to prove that he could be anything if he worked hard enough.
Adults at a summer program helped Derrius find out about scholarships he could earn to pay for college. In his senior year, Derrius filled out lots of applications. He told his friends, “You’re not going to see me for a long time.” Derrius’s hard work paid off. He won more than $1 million in scholarships! He has a lot to be proud of. But he’s most proud of helping others. Derrius gives speeches to teens, telling them how to find scholarships. In high school, Derrius got help buying a computer. He wanted to help others who needed them. Last year, he gave two laptops to high schoolstudents. There’s a lot of work in his future. Derrius doesn’t mind — hard work has got him where he is today. He knows it can take him anywhere.
小题1: From Paragraphs 2 and 3, we can learn that Derrius _____.
A.always studied hard in school
B.lived in the same foster home with his brother
C.hated his parents very much
D.was encouraged a lot by his biology teacher
小题2:The underlined word “it” in the last paragraph refers to _____.
A.great successB.a scholarship
C.hard workD.a computer
小题3:What kind of person do you think Derrius is?
A.Lazy but kind-hearted.
B.Selfish and naughty.
C.Confident but troublesome(带来麻烦的).
D.Determined and generous(慷慨的).
小题4:What does the author want to tell us?
A.The way to win a scholarship to a college.
B.The importance of family background.
C.Never forget people who have helped you.
D.Hard work pays off sooner or later.

题型:不详难度:| 查看答案
Parents have widely different views on the problem of pocket money. Four new fathers were asked this question and this is how they answered. 
Ashish Khanna: Although many argue that pocket money helps develop children’s sense of value, I don’t agree. I wouldn’t give my child any pocket money. First of all, I never got pocket money and I seem to have a good value for money. If my child ever needed something and I felt it was a reasonable (合理的) request, I would buy it for him.
Sharad Sanghi: No, I wouldn’t give my child pocket money because I don’t want to create the perception (观念) of “her” money and “my” money. Besides, if I refuse to buy her something that I think is bad for her, she may buy it with her pocket money on the sly. In this way, I would lose control over my child’s requests. I feel it also encourages children to care more about money than anything else. I don’t want my child to start judging other children by the amount of money or pocket money they have.
Rakesh Shah: Yes, I would give my child pocket money because I feel that children should learn to spend money properly. I will give him a fixed amount every month and if he spends the money before the month is over, he will learn a lesson and not spend money so freely. He will learn what his limitations (限制) are and feel the difficulty when he has to pay for something that is over his own pocket.
Rajiv Patel: Yes, I would give my child pocket money because it is important that he learns to manage money. But I would not give it to him on a weekly or monthly basis. He would have to earn it. If he helped me finish some of my jobs or helped his mother with housework, I would reward him. This helps him realize that “money does not grow on trees” and it requires hard work to earn money.
小题1:Ashish Khanna may agree that _____.
A.he was given too much pocket money when young
B.he can take much control of his child by money
C.he will buy anything he thinks his child really needs
D.pocket money helps children develop a good value for money
小题2:The underlined phrase “on the sly” in Paragraph 3 is the closest in meaning to “_____”.
A.for freeB.at a lower price
C.happilyD.secretly
小题3:Who would give his child pocket money every month?
A.Ashish Khanna.B.Sharad Sanghi.
C.Rakesh Shah. D.Rajiv Patel.
小题4:What do Rakesh Shah and Rajiv Patel have in common?
A.They want their children to learn to manage money from an early age.
B.They ask their children to get pocket money by working.
C.They teach their children the difficulty of making money.
D.They allow their children to spend money freely.

题型:不详难度:| 查看答案
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