Imagine the situation. You are driving in a village or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car doesn’t work. 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 used for finding your position(位置) with the help of satellites (衛(wèi)星). A GPS can’t start your car, but at least you will know where you are.
GPS, which means Global Positioning System(全球定位系統(tǒng)), 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 a GPS in cars, planes, or boats. Some of them 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 GPS. The first part is the receiver. You can hold it in your hand, or have it fixed into your car, plane, etc. The second part is a group of satellites going around the Earth. The receiver communicates with at least four of the satellites and calculates its position. The third part of the system is a network of ground stations all over the world. They control (控制) the satellites and make sure they are working well.
Some people think that in the future the GPS will be as common as the mobile. They are becoming better and cheaper. There are also new uses for the GPS. Perhaps they will become like watches. Everyone will have one and you will never be lost again.
小題1:According to the passage, with the help of the GPS, people __________.
A．can’t be lost in a new city
B．can’t find their way in different countries
C．can learn about the culture of an unknown place
D．can spend the least time getting to another place
小題2:We can learn from the passage that ____________.
A．there are three parts to the GPS
B．a(chǎn) GPS can’t be put into a watch
C．a(chǎn) GPS can help you start your car
D．the GPS are becoming more and more expensive
小題3:The underlined word “They ” in paragraph 3 means “____________”.
A．ReceiversB．GPSC．SatellitesD．Ground stations
小題4:What can we infer(推斷) 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 communicates with at least five of the satellites.
D．The GPS will become more and more common in everyday life.

小題1:A
小題2:A
小題3:D
小題4:D

試題分析：這是一篇富有科學的短文。短文介紹了一種高科技產(chǎn)品----全球定位系統(tǒng)。全球定位系統(tǒng)由三個部分組成-----接收器、衛(wèi)星群、網(wǎng)絡(luò)。它能正確確定你所在的位置，讓你不再迷路。她已經(jīng)廣泛應(yīng)用于汽車、飛機、輪船等交通工具，將來它還會像手機一樣普及在日常生活中。
小題1:細節(jié)理解題。短文最后說到：Everyone will have one and you will never be lost again.每個人都會有一個全球定位系統(tǒng)，這樣你再也不會迷路了。故選A。
小題2:細節(jié)理解題。短文第二段說：There are three parts to GPS.全球定位系統(tǒng)有三個部分。所以應(yīng)該選A。
小題3:細節(jié)理解題。這個題目要結(jié)合上文理解，短文說：The third part of the system is a network of ground stations all over the world. They control (控制) the satellites and make sure they are working well.第三部分是全世界的地面基站網(wǎng)絡(luò)，他們控制著衛(wèi)星確保衛(wèi)星正常運轉(zhuǎn)。所以這里的they是指地面基站網(wǎng)絡(luò)。故選D。
小題4:細節(jié)理解題。從短文最后一段可以看出全球定位系統(tǒng)將會廣泛應(yīng)用于日常生活中。Some people think that in the future the GPS will be as common as the mobile.人們認為將來全球定位系統(tǒng)會像手機一樣普遍。Perhaps they will become like watches.也許他們會像手表。所以選D。
考點：
練習冊系列答案
相關(guān)習題

科目：初中英語 來源：不詳 題型：閱讀理解



The television has been an important part of many families’ life. Many children like to sit in front of the television instead of doing something else. When many experts (專家) say that television is bad for children, some believe that television can really have a good effect on a child’s life, if it is used properly.
There are many television programmes that both provide fun and education. Spending some time on these types of programmes is good for your child’s development. The television can be more efficient at teaching a child certain (某種) tasks.
Parents can also use the television to help children read. After watching an educational programme, your child may become more interested in a topic. Use that interest to drive your child toward reading.
The television can also help to make a family closer. After a programme ends, you can start a decision about it. This can help encourage a healthy family.
The television can introduce your child to new cultures. This can help your child learn a lot from them.
The television can also help build a bridge for difficult communication between parents and children. If a child refuses to talk about a topic with his or her parents, he or she is willing to talk about it with his or her parents after watching the programme about the topic. This is an example of television’s role as a bridge to tough communication.
小題1:Which of the following is NOT true according to the first paragraph?
A．Fewer and fewer families enjoy watching TV in daily life.
B．Many children prefer watching TV to doing other things.
C．Some people believe that watching TV is good for children.
D．Many experts think the television has a bad effect on children.
小題2:The television can be more efficient at….Here “efficient” means ___________.
A．有效的B．緩慢的C．困難的D．強硬的
小題3:The television can help children ___________.
A．to build bridges in the future
B．to practise English speaking skill
C．to become more interested in reading
D．to become stronger
小題4:Which of the following is NOT mentioned in this passage?
A．The television can help improve the family relationship.
B．The television can bring children both fun and education.
C．Children can learn much about different cultures by watching TV.
D．Children can make more friends by watching TV.
小題5:This passage mainly talks about _______________.
A．children’s favourite TV programmes
B．good efffects of the television on children
C．the great importance of television
D．children’s different habits of watching TV

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

The world would be a very different place if someone hadn’t invented the lift. There would be few, if any, high-rise buildings because people would refuse to climb many stairs. By the time workers reached their offices on the top floors of a tower building, it would be time to go home – if they were not too tired for the long walk down！

The first lift that we know about was used by the Greek scientist, Archimedes, in about 230 BC. It was a simple place that could be pulled up and down with a rope. A lift like this was used much later in the 12th century by priests who lived on top of a mountain at Metereo in Greece. Because they were afraid of killers, the priests had not built any stairs up the mountain. The only way up was by lift, which priests worked from the top of the mountain.
A few hundred years later, a Frenchman, Villayer, invented a ‘flying chair’ which used a rope and a place. A number of rich people had these ‘flying chairs’ built in their homes, including Queen Anne of England in Windsor Castle and Louis XVI of France at Versailles. Unluckily, Louis’ daughter was badly hurt when using one of the chairs, and Villayer ran away, afraid that he would be punished.
The main problem for lift engineers was that either humans or animals were needed to pull the ropes. This problem was not worked out until the discovery of steam power. But even steam powered lifts were not always safe because they also used ropes which sometimes broke. If the rope broke - which it sometimes did - the lift fell to the ground and people in it were killed or hurt. This problem worked out in 1854 when an American, Elisha Otis, invented something which stopped the lift from falling if the rope broke. At first Otis lifts were used only in factories, then in 1857 he built one in a large New York store. Now lifts use electric power and are completely safe. They also travel very quickly. Some lifts travel faster than 60 kilometers an hour.
小題1:The writer thinks that lifts are important today because __________.
A．people like playing on them
B．they are the best way of using steam power
C．we need them for tall buildings
D．workers are lazy
小題2:The 12th century priests had a simple lift instead of stairs because ___________.
A．they thought the stairs were broken
B．they liked having stairs and a lift
C．the lived at the bottom of a mountain
D．they were afraid of killers
小題3:Villayer thought he would be punished because ____________.
A．poor people could not afford his ‘flying chair
B．someone was hurt in one of his ‘flying chairs’
C．his ‘flying chair’ did not work at all
D．he ran away with Louis XVI’s daughter
小題4:Steam power meant that ________  .
A．they did not need a living thing to pull the ropes
B．Elisha Otis could invent a lift that would not fall
C．the rope always broke
D．they could use lifts in factories

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

You’ve probably heard of working dogs that help police officers, or horses that help farmers. Did you know that carrier pigeons（信鴿）can be trained to help people too? Here are some examples.
Mailman
Carrier pigeons can be trained to carry messages to people. The note is placed into a small can. The can is tied to the pigeon’s leg. Then the pigeon flies off with the note.
Lifeguard
From high up in the sky, specially trained pigeons can find orange life jackets in the ocean. Sometimes it is difficult for humans to find people lost at sea, especially when the weather is bad. However, pigeons can fly quickly over a large area of water to look for people.
Spy
Many years ago, carrier pigeons were used to help our country during wars (戰(zhàn)爭). “Spy pigeons” had small cameras that were tied to their feet. As a pigeon flew over enemy (敵人)land, the camera took photos of the land below. This would allow our soldiers to see where the enemies were and what they were doing.
So next time you see a pigeon, stop and watch it closely. What might look like an ordinary bird to most people, might actually be helpful.
小題1:Which part of the carrier pigeon is the can tied to?
A．The pigeon’s back.B．The pigeon’s head.C．The pigeon’s neck.D．The pigeon’s leg.
小題2:What kind of people can the carrier pigeons find?
A．The people in orange life jackets at sea.
B．The people in red jackets in the boats.
C．The people swimming in the ocean.
D．The people lost in the mountains.
小題3:Which of the following statements is TRUE according to the passage?
A．A pigeon could predict what the weather would be like.
B．A pigeon was tied with a small camera around its leg.
C．A pigeon could help us to know the number of the enemy.
D．A pigeon carried the camera to take photos of the enemy land.
小題4:What kind of jobs are mentioned for a carrier pigeon?
A．A mailman, a lifeguard and a spy.
B．A trainer, a spy and a police officer.
C．A soldier, a police officer and a mailman.
D．A farmer, a weather reporter and a lifeguard.
小題5:What is the purpose of writing this article?
A．To make readers like pigeons more.
B．To teach readers about the lives of wild pigeons.
C．To tell readers about real jobs held by carrier pigeons.
D．To share science fictions about pigeons helping people.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

According to a new survey . Students’ safety has become a big problem. Nearly 50% of students say they are worried about robbery (搶劫) on the way to and from school. Now in some big cities in China, some schools have taught an unusual lesson: self-protection. Students like this lesson because there are no exams or boring classes. And they can learn how to save lives and know how to stop danger before it really happens.
Chen Haoyu, a teacher at Beijing No 25 Middle School gives young students advice on how to deal with danger:
If you are robbed
Keep calm. lf you can not cry for help or run away, give the robber your money. Try to remember what the robber looks like and tell the police later.
If you are in a traffic accident.
If a car hits you. You should remember the car number. If it is a bicycle, try to call your parents before you let the rider go. This is because you don't know how badly you are hurt
If it is raining hard and there is lighting. (閃電)
Don’t stay in high places and stay away from trees.
When there is a fire.
Run away as fast as yon can. Put wet things on your body and try to find an exit. Do not take the lift.
If someone is drowning(溺水)
If you can’t swim, don’t get into the water. Cry out for help.
Remember that danger is never as far away as you think. Take care of yourself at all times!
小題1:Why do students like the self-protection lesson?
①Because there are no tests.
②Because the lessons are boring
③ Because they can learn how to save lives.
④Because they know how to stop danger before it happens.
A．①②B．②③C．①②④D．①③④
小題2:What will you do if a bicycle hurts you?
A．I will remember the bicycle number.
B．I won't let the rider go until I call my parents.
C．I will let the rider go before I call my parents.
D．I will let the rider go because I know how badly I am hurt.
小題3:lf your house is on fire, you must ______ .
A．put dry things on your body
B．run quickly and take the lift
C．run away and find an exit as quickly as you can
D．take everything you have and then run away
小題4:There are _____ ways of self-protection mentioned in the passage.
A．3B．4C．5D．6
小題5:The best title for this passage is ________ .
A．How to Keep CalmB．Self-protectionC．An usual lessonD．Danger

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解



China's first moon rover (月球車), Yutu, set off from the lander（登陸車） early on December 15, several hours after the Chang'e-3 probe (探測器) soft-landed on the moon surface.
The 140 kg six-wheeled rover touched the moon surface at 4:35 a.m., leaving deep lines on the loose moon land. This was recorded by the camera on the lander and the images were sent to the earth, according to the Beijing Aerospace Control Center. After that, the rover and lander will take photos of each other and start their own science explorations.
Earlier this morning, engineers made final checks of the environment of the landing area and the situation of the probe（探測儀）. Yutu, reached its solar panel (光板) and started to drive slowly to the moon at 3:10 a.m.. It took Yutu nearly a whole hour to complete the simple task.
Chang'e-3 landed at the Bay of Rainbows on the moon, at 9:11 p.m. on December 14, making China the third country in the world to carry out such a mission (執(zhí)行此類任務(wù)) after the United States and Russia.
In old Chinese tales, Yutu was the white pet rabbit of Chang'e’s. The name for the rover was selected following an online survey that collected several million votes from people around the world.
The rover, 1.5 meters long with its two wings folded (折疊), 1 m in width and 1.1 m in height, is a perfect robot controlled by the command center from the earth. It will face challenges including temperature differences of more than 300℃ on the moon.
Yutu will do some research and look for natural resources (資源) for three months, while the lander will conduct an exploration at the landing place for one year. Then they will have a good rest on the moon and will not be used for a long time until China’s next probe visits the moon again.
小題1:Which is the best title for the passage above?
A．The American’sfirst rover on the moon
B．The tale of Chang’e
C．The journey to the moon
D．Yutu explores the moon
小題2:Which is the correct order of the following events?
a. The 140 kg six-wheeled rover touched the moon surface.
b. The rover and lander will take photos of each other.
c. Yutu started to drive slowly to the moon.
d. Chang'e-3 landed at the Bay of Rainbows on the moon.
A．a(chǎn)-b-c-dB．c-d-a-bC．d-c-a-bD．c-a-b-d
小題3:What does the underlined word “width” mean in Chinese?
A．智力B．寬度C．重量D．長度
小題4:Which of the following is true according to the passage?
A．The moon had been visited by only two countries before 2013.
B．Yutu is a perfect robot under the control of its own computer.
C．Yutu and Chang’e will return to the earth after the one-year mission.
D．Chang’e-3 is 140 kg in weight.
小題5:There will soon be a second moon rover to explore the moon. Which is its proper name?
A．Chang’e-5 B．Yutu-2 C．Shenzhou-11 D．Tiangong-2

查看答案和解析>>

科目：初中英語 來源：不詳 題型：完形填空

Where did you go yesterday? Did you hear music at any of those places? Today most shops and restaurants play music.
Scientists believe that music _______ people’s behavior(舉止). According to some scientists, the sound of western classical(古典的) music makes people _____ richer. When a restaurant plays classical music, people spend _______ money on food and drinks. When the restaurant plays modern music, people spend less money. With ____ music, people spend even less.
Scientists also ______ that loud, fast music makes people eat faster. In fact, people ______ their food faster when the music gets faster. Some restaurants play fast music during their _______ hours. This gets people to eat faster and leave quickly. Restaurants _______ make people spend even less.
The _______ time you hear music somewhere, be _____. It might change the way you do things.
小題1:
A．changesB．makesC．tellsD．takes
小題2:
A．becomeB．getC．feelD．look
小題3:
A．muchB．moreC．littleD．less
小題4:
A．noB．muchC．a(chǎn)nyD．some
小題5:
A．knowB．hopeC．realizeD．believe
小題6:
A．cookB．orderC．eatD．make
小題7:
A．freeB．busyC．happyD．sad
小題8:
A．canB．shouldC．can’tD．needn’t
小題9:
A．firstB．secondC．nextD．last
小題10:
A．quietB．quickC．happyD．careful

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

任務(wù)型閱讀（共5小題，計10分）閱讀下面短文，根據(jù)短文內(nèi)容，完成下面表格中所缺的信息（共5小題，每小題2分，計10分）
Do you think it’s hard for you to learn English? Listening to English songs may be a fun way to learn. You might be thinking: Where can I find some online music? Well, there are plenty of places to listen to and download English songs.
Google music is a good website. It has about 350,000 songs for download. You can search by artist and song name. You can also search by criteria(標準). For example, if you want to find a slow song by a female singer, just choose “ female singer” and “slow” on the page. On Google music, you can read the lyrics to the songs as you listen.
Baidu MP3 is another big online music database(數(shù)據(jù)庫). You can find some of the newest songs on Baidu and download them.
If you just want to listen to music, you can try www. aiting.com and www. haoting. com. They are two large online Mp3 players.
After you pick(挑選) the songs, you can start learning. Learning language from music is fun, so don’t think of it as work. You can listen on your way to school or before you go to sleep. Close your eyes and try to get the meaning of the songs.
小題1:There are _____________________________________ songs to download on Google music.
小題2:We can download English songs from ________________ and ____________________.
小題3:The ways of searching songs are ______________________________________
小題4:When we listen to songs, we can read the lyrics on__________________________________
小題5:The best title of the passage is _______________________________________

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

When we can see well, we do not think about our eyes often. It is only when we can not see perfectly that we come to see how important our eyes are.
People who are nearsighted can only see things that are very close to their eyes. Many people who do a lot of close work, such as writing and reading, become nearsighted. Then they have to wear glasses in order to see distant things clearly.
People who are farsighted face just the opposite problem. They can see things that are far away, but they have difficulty reading a book unless they hold it at arm’s length. If they want to do much reading, they must get glasses too.
Other people do not see clearly because their eyes are not exactly the right shape. This, too, can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them.
When night falls, colors become fainter to the eyes and finally disappear. After your eyes have grown used to the dark, you can see better if you use the side of your eyes rather than the centers. Sometimes, after dark, you see a small thing to one side of you, which seems to disappear if you turn your head in its direction. This is because when you turn your head, you are looking at the thing too directly. Men on guard duty sometimes think they see something moving to one side of them. When they turn to look straight at it, they can not see it any more, and they believe they were mistaken. However, this mistake happens because the center of the eye, which is very sensitive in daylight, is not as sensitive as the sides of the eye after dark.
小題1:We don’t know that our eyes are of great importance until ________.
A．we think about our eyes
B．we cannot see clearly
C．we wear glasses
D．we have to do much reading
小題2:According to the passage, a ________ is more likely to be nearsighted.
A．tailorB．doctorC．guardD．painter
小題3:People who are farsighted ________ .
A．cannot do a lot of close work without glasses
B．can only see things that are very close to their eyes
C．have difficulty reading a book if they hold it at arm’s length
D．have the same problem as the nearsighted people
小題4:To see a small thing at night, it is better to look ________ .
A．with wide open eyes
B．with half shut or narrowed eyes
C．straight at it
D．in a slightly different direction

查看答案和解析>>

同步練習冊答案