题目内容


The Clockwork Radio
The British inventor Trevor Baylis created this really clever ′wind-up radio′ for people from Third World countries. in some parts of the Third World countries, it’s very hard for people to get or pay for enough energy. This radio uses no batteries (电池) and does not need any electricity to run it. A clockwork generator (发电机) is put inside the radio and works as the power. When it is fully wound up (上弦), the radio can work for long periods.

The clock work product is not a new invention. The Victorians had already put it in wide use. We may find them used in toys as well. Then what is new about this clockwork radio? Baylis has used this simple but effective (高效的) way of creating electricity to both help the people of the Third World and to develop a product which is selling well in Western Europe.
Even former President of South Africa, Nelson Mandella has one of these radios and personally recommends this product to others.
【小题1】What does the clockwork radio use to run it?

A.Batteries. B.Electricity.
C.A clockwork generator. D.Wind power.
【小题2】The Third World countries are       in the world.
A.the rich countriesB.the poor countries
C.Western EuropeanD.Victorian countries
【小题3】Which sentence is true according to the passage?
A.the clockwork radio can work for only a short period of time.
B.Trevor Baylis created the world’s first clockwork product.
C.The clockwise radio is also a toy for people of the Third World.
D.Nelson Mandella owns one of the clockwork radios.


【小题1】C
【小题2】B
【小题3】D

解析【小题1】根据A clockwork generator (发电机) is put inside the radio and works as the power. When it is fully wound up (上弦), the radio can work for long periods.描述。可知选C。
【小题2】根据in some parts of the Third World countries, it’s very hard for people to get or pay for enough energy.可知这些国家的人们很穷,故选B。
【小题3】根据Even former President of South Africa, Nelson Mandella has one of these radios and personally recommends this product to others. 描述,可知选D。

练习册系列答案
相关题目

Many companies use guards and expensive alarm systems to protect their property(财产)。 Soon a new kind of protection will be used- robots. Engineers have been working on the first mobile robots for businesses. The robots will patrol(巡逻) factories, warehoues(仓库),and museums at night.
The mobile robots will move around slowly on wheels. They will be able to detect people through walls and pick up sounds, such as breaking glass. They can be fixed with lound sirens(警笛) to frighten thieves, or radios to signal police or guards.
To protect a building, a robot will have to move around without knocking into the walls. Information about the building will have to be stored in the robot’s small, built-in computer. A floor map could be programmed into the computer’s memory, for example.
A mobile robot will not be able to do everything. Unlike human guards, it will not be able to climb stairs, open doors, or move along rough ground. It won’t be able to tell the difference between friends and enemies. Because of that, people will have to be barred from the area it patrols.
One kind of mobile robot will be able to “sense” whether a chair or box has been moved and go around it. This robot will also judge size well enough so that it won’t send an alam if a cat crosses the room. And if someone tries to steal this robot, it will sound a loud, painful siren. The three-foot-tall robot will be hard to steal anyway. It will weigh about 200 pounds.
U.S companies pay almost $10 billion a year to protect their property with alarm systems and human guards. Mobile robots may be cheaper.
【小题1】Why is the new kind of robots called mobile robots?

A.Because they are able to climb stairs.B.Because they are able to send an alarm
C.Because they can open doors.D.Because they can move around slowly on wheels
【小题2】 How will a robot get directions for moving around a building?
A.From a human guard .B.From a built- in computer.
C.From another robot .D.From radio signals.
【小题3】 What does the underlined word barred mean?
A.protectedB.allowed .C.markedD.prevented
【小题4】 According to the text, a mobile robot will NOT be able to ___________.
A.sense whether something has been moved.B.sense a cat crossing the room.
C.move over rough ground .D.detect people through walls.
【小题5】This text mainly describes how robots will ___________.
A.protect the museumB.set off a siren .
C.judge the size of a person.D.patrol buildings.

Why should we learn to swim?
Firstly, swimming is a good exercise for our health. Indeed doctors say it is the best exercise, because in swimming all the muscles of the body are used.
Secondly, swimming gives great pleasure. How nice it is, on a hot dusty day in summer, to take off one’s clothes and dive into the cool water of a rive or the sea, and to swim and float until one feels enough.
Thirdly, swimming may sometimes mean all the different between life and death, we never know when we may be in danger from water. We got on a voyage, and the ship in wrecked; we go for a pleasure sail on a lake and the boat turns over; we slip as we are walking along the bank of a river, and half in the water. If we can swim, we have chance for saving our own lives, but if we cannot swim, we are pretty certain to be drowned. So for our own safety, we should learn to swim.
Lastly, if we can swim, we may be able to save other people from drowning. How sad it is to see a friend drowning before our eyes while we cannot help just because we cannot swim.
11.Who says that swimming is the best exercise?  _________.
A. Farmers          B. Dentists     C. Fishermen            D. Doctors
12.When swimming, ________.
A. We don’t move at all                    B. all the muscle of the body are used
C. we move our legs only                D. we drink lots of seawater into our stomach
13.Swimming ­­­­________.
A. gives great pain                     B. gives no pleasure   
C. gives much pleasure                  D. does harm to the body
14.If we can swim, ________.
A. we are no longer humans, but fish         B. we shall be drowned one day
C. we have a chance of saving our own lives   D. we can’t walk any more
15.If we can swim, ________.
A. we may be able to help others from drowning 
B. we can’t save others from drowning
C. it is pretty danger certain that we will get drowned
D. there is a great danger when we fall into the water

  Expert(专家)say that students usually need eight to ten hours’ sleep at night, but most Chinese students do not get enough sleep. Some Chinese parents are usually glad to see their children studying late. They will think their children work very hard, but not all parents are happy about this. Once a mother told us that every morning her 10-year-old boy put up one finger(手指)with his eyes still closed, begging(请求)for one more minute to sleep. Like thousands of students “early birds” in China, he has to get up before six every morning.
   A report shows that without a good night’s sleep, students seem to be weaker(虚弱)than they should be. Many students have fallen asleep(睡觉) during class at one time or another. Too much homework is not the only reason why students stay up late. Some watch TV or play the computer games late into the night.
   Experts have ever said that the students should develop good study habits. So some clever students never study late, they are able to work well in class.
【小题1】The 10-year-old boy begged for more minute to sleep because__________.

A.he didn’t have enough sleep    
B.it wasn’t time for him to get up
C.he didn’t want to go to school 
D.he wanted his mother to wake him up
【小题2】In this passage we know if students don’t get enough sleep, they may________.
A.become too weak to sleepB.not work well in class
C.go to bed earlyD.be weak in English
【小题3】In this passage “early birds” means “persons who ______________.”
A.get up earlyB.get up late
C.sleeplessD.don’t want to sleep
【小题4】“Stay up late” here means “_____________.”
A.study lateB.watch TV late 
C.not go to bed until lateD.stay outside
【小题5】According to the passage, which of the following is right? _________.
A.If you want to study better, you must work hard at night.
B.Sleeping less means working hard.
C.Some clever students are able to work well in class because they have good study habits.
D.Students don’t have enough sleep because they have lots of homework to do.

If you love books, then“Three Cups of Tea”will be your favorite. It will take you on an adventure(冒险)to one of the highest mountains in the world. You will learn how the people and children there lived and how the writer, Greg Mortenson , helped build an education system.
While climbing K2 in Pakistan, one of the world’s most difficult mountains to climb, Greg Mortenson became ill and got lost. He got help in a small village. The people of the village took good care of him, feeding him and letting him sleep in a villager’s house. They also gave him their best food: sweet tea.
When Mortenson was fine, he found that the children of the village worked and studied outdoors. Their teacher came only three times a week and they didn’t have blackboards. They used sticks(枝条)to write on the ground.
The day he left the village, he told them he would come back and build a school. His school would have both boys and girls. Later on, he came back and helped build a school, so the kids were able to study in the classroom with real writing instruments.
That was in 1993. Today Mortenson is going to build 80 schools in Central Asia. He started a foundation(基金)called the Central Asia Institute to raise money for these schools. He has helped more than 18,000 girls receive education so far.
【小题1】“Three Cups of Tea”is the name of a        .

A.clubB.teahouseC.bookD.movie
【小题2】The following are what the people of the village did for Greg Mortenson EXCEPT         .
A.taking care of him and feeding him
B.taking him to the hospital
C.finding somewhere to let him sleep
D.giving him their best food
【小题3】From the passage we know that        had more chances to receive education in Pakistan mountains in the past.
A.boysB.girlsC.the richD.the poor


During the day, you spend a lot of time running, jumping, laughing, eating, and talking. You use up a lot of energy(能量) , and by the end of the day you’re tired. Sleep gives your body a chance to rest.
But your brain (大脑)and body are not completely at rest during sleep. While you sleep, your mind may think of the things that happened during the day. It keeps the important things in mind as memories(记忆). It also thinks about things you were worrying about, and you may wake up with answers to some of your problems.
You also grow while you sleep. The thing called "human growth hormone (荷尔蒙)" in the body helps you grow during sleep. This growth hormone also helps the body to repair itself.
Sleep helps your body to conserve energy too. You use up a lot of energy during your daily activities. But when you sleep, your body temperature falls, and your "metabolism" (新陈代谢) slows down. You are still using some energy, but much less than when you are awake and active.
Have you ever stayed up past your bedtime? Did you have difficulty getting up the next morning? Maybe you had problems seeing clearly or you cannot think clearly. That was your body’s way of saying, "I need sleep!" A lack ( 缺乏) of sleep can stop your body and mind from working correctly.
【小题1】What does "human growth hormone" do while people sleep?

A.It helps people rest well.B.It helps repair the body.
C.It helps answer problems.D.It helps slow the body down.
【小题2】According to the passage, which of the following tells you need sleep?
A.You use up a lot of energy.B.You enjoy daily activities.
C.Your body temperature falls.D.You don’t want to get up.
【小题3】What does the underlined word "conserve" mean?
A.provideB.moveC.saveD.spend
【小题4】What is this passage mainly about?
A.Sleep is very important.B.The brain needs enough sleep.
C.Good ways to sleep well.D.People use energy when sleeping

Computer technology has become an important part of people’s life.This technology has its own special words.One well-known computer word is Google.It’s the name of a popular “search engineer(引擎)” for the Internet.People use the search engineer to find information about almost any subject on the Internet.The people who started the company named it Google because in math Google is a very large number-One hundred zeros follow the number one.When you “Google” a subject, you can get a lot of information about it.
If you Google someone, you might find that person’s name on a blog (博客).A blog is short for a Web log.It’s a personal Web page.Some people write blogs to express their opinions and ideas over the Internet.Some use them to share their lives with faraway friends or family.Others write blogs to help them deal with sickness, money problems or to choose movies to see or books to read.Some people add information to their blogs every day.People who have blogs are called bloggers.
根据短文内容, 判断下列句子的正误,正确的为“T”,错误的为“F”。并在答题卡上将答案涂黑。
【小题1】Google and Blog are two kinds of popular search engineer.
【小题2】.One can use Google to search the Internet for all information he wants.
【小题3】.People may use blogs to share their opinions or ask others for help.
【小题4】.Bloggers must add information to their blogs every day.
【小题5】From the passage we can infer ( 推断) that computer technology is changing  people’s life.

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网