Today, air travel is far safer than driving a car on a busy motorway. But still there is a danger that grows every year. Airliners get larger and larger. Some airplanes can carry over 300 passengers. And the air itself becomes more and more crowded. If one large airliner struck into another in midair, 600 lives could be lost.

From the moment an airliner takes off to the moment it lands, every movement is watched on radar screens. Air traffic controllers tell the pilot exactly when to turn, when to climb and when to come down.

The air traffic controllers around a busy airport like London, Heathrow may deal with 2,500 planes a day. Not all of them actually land at the airport. Any plane that flies near the airport comes under the orders of the controllers there. Even a small mistake on their part could cause a terrible accident.

Recently such a disaster almost happened. Two large jets were flying towards the airport. One was carrying 69 passengers from Toronto, the other 176 passengers from Chicago. An air traffic controller noticed on his radar（雷達） screen that the two planes were too close to each other. He ordered one to turn to the right and to climb. But he made a mistake. He ordered the wrong plane to do this. So, instead of turning away from the second plane the first plane turned towards it. Fifteen seconds later, it flew directly in front of the second plane. They avoided each other by the smallest part of a second. The distance between them was less than that of a large swimming pool. This is an example of the danger that grows every year.

1.The air traffic controllers of an airport _______.

A. control all the planes flying near the airport

B. give orders to planes leaving the airport

C. only deal with the planes that want to land there

D. are allowed to handle 250 planes a day

2.The danger of air crashes（碰撞） grows every year because ________.

A. airliners are getting larger and air traffic is becoming heavier

B. a pilot does not always hear a controller’s order

C. a controller is likely to make more and more mistakes

D. airports can hardly serve the growing number of airplanes

3. The example in the passage is to show that _______.

A. air traffic controllers are often careless

B. air traffic controllers should pay much attention to avoiding accidents

C. it is difficult for airplanes to avoid terrible accidents

D. two planes should not fly too close to each other

練習冊系列答案
相關(guān)習題

科目：初中英語 來源：2015-2016學年湖北咸寧嘉魚城北中學七年級上第一次月考英語試卷（解析版） 題型：單項填空

當你被介紹認識某人后, 你應該說: “__________”。

A. Good morning! B. Thank you!

C. Nice to meet you! D. How are you?

查看答案和解析>>

科目：初中英語 來源：2016屆浙江諸暨市五校九年級上學期期中英語試卷（解析版） 題型：閱讀理解

If your mother told you to eat carrots so you’d be able to see in the dark, she was right. It turns out that feeding kids carrots is just one of a number of things to keep eyes healthy. Other things include regular eye exams, and sunglasses or hats are also very helpful, experts say.

While eye disease is sometimes hereditary(遺傳的), some are still preventable（可預防的）, said Dr. Ron Weber, an Atlanta-based ophthalmologist. For example, nearsightedness, “not only has a genetic(基因的) component but is also influenced by how kids use their eyes during childhood,” he told Reuters Health by phone.

He said that extended close work, such as reading, has long been thought to cause nearsightedness. Recent support has come from a study in which people with a higher level of education were more likely to have nearsightedness, because they spend more time reading or working on computers. Another study showed that children who spend more time outdoors are less likely to become nearsighted.

But these findings don’t mean kids should be stopped from reading or working on the computer. Instead, Weber suggests, make sure a child’s environment is bright enough while they are doing close work. Parents should also help kids get into the habit of holding their reading material at the perfect distance – about 18 to 22 inches, he said. Finally, taking a break every five minutes or so, to let the eyes relax and focus on an object in the distance, will also help.

One of the most important things a parent can do to help head off eye disease and vision problems is to make sure their child gets regular eye exams, beginning early in life. “The majority of vision problems in children are preventable and treatable,” said Dr. Ida Chung.

1.What does the writer want to tell us in the passage?

A. It is important to keep your eyes healthy.

B. People seldom pay attention to eye health.

C. It is necessary to give your kids carrots.

D. All the eye disease are hereditary.

2.Which one is good for our eye health according to the third paragraph?

A. Spend more reading on computers.

B. Spend more time indoors.

C. Spend more time doing outdoor activities.

D. Spend more time working on computers.

3.The underlined part in the last paragraph means__________.

A. treat B. stop C. cover D. increase

4. Which can be the BEST title for this passage?

A. Eating carrots

B. Eye disease

C. How to keep eyes healthy

D. The importance of eye health.

查看答案和解析>>

科目：初中英語 來源：2016屆江蘇揚州市九年級上學期12月月考英語試卷（解析版） 題型：閱讀理解

A man had a little dog, and he was very fond of it. He would pat its head, and take it on his knee, and talk to it. Then he would give it little bits of food from his own plate. A donkey looked in at the window and saw the man and the dog. "Why does he not make a pet of me?" said the donkey. "It is not fair. I work hard, and the dog only wags its tail, and barks, and jumps on its master's knee. It is not fair."

Then the donkey said to himself, "If I do what the dog does, he may make a pet of me." So the donkey ran into the room. It brayed as loudly as it could. It wagged its tail so hard that it knocked over a jar on the table. Then it tried to jump on to its master's knee. The master thought the donkey was mad, and he shouted, "Help! Help!" Men came running in with sticks, and they beat the donkey till it ran out of the house, and they drove it back to the field.

"I only did what the dog does," said the donkey," and yet they make a pet of the dog, and they beat me with sticks. It is not fair."

1.The man liked the dog. He did a lot except __________.

A. patting the dog’s head B. sleeping with the dog

C. talking to the dog D. taking the dog on his knee

2.Which is not the reason why the man treated the dog well?

A. It barked

B. It worked hard.

C. It jumped on the master’s knee

D. It wagged its tail

3.What happened to the donkey at last?

A. The donkey jumped onto the man’s knees.

B. The man liked it as the dog.

C. The donkey was driven back to the field.

D. The men beat it to death.

查看答案和解析>>

科目：初中英語 來源：2016屆江蘇無錫市九年級上學期12月階段考英語試卷（解析版） 題型：完形填空

完形填空 先通讀下面的短文，掌握其大意，然后在每小題所給的四個選項中選出可以填入空白處的最佳選項。

Most parents, I suppose, have had the experience of reading a bedtime story their children. And they must have realized how difficult it is to write a good children’s book. Either the author has aimed too , so that children can’t follow what is in his ( or more often, her ) story, ________ the story seems to be talking to the readers.

The best children’s books are very difficult nor very simple, and satisfy the child who hears the story and the adult who reads it. Unfortunately, there are in fact few books like this, ________ the problem of finding the right bedtime story is not to solve. This may be why many of the books regarded as works of children’s literature were in fact written for . “Alice in Wonderland” is perhaps the most obvious（明顯）of this.

Children, left for themselves, often the worst possible interest in literature. Just leave a child in a bookshop or a library and he will more willingly choose the books written in an unimaginative way, or have a look at the most children’s comics, full of the stories and jokes which are the rejections of teachers and righting-thinking parents.

Perhaps we parents should stop ________ to brainwash（洗腦）children into accepting our taste in literature. After all, children and adults are so ________ that we parents should not expect that they will enjoy the same books. So I suppose we’ll just have to compromise over the bedtime story.

1.A. to B. in C. with D. around

2.A. easy B. short C. high D. difficult

3.A. and B. but C. or D. so

4.A. both B. neither C. either D. very

5.A. but B. however C. so D. because

6.A. hard B. easy C. enough D. fast

7.A. grown-ups B. girls C. boys D. children

8.A. are B. show C. find D. add

9.A. going B. liking C. trying D. preferring

10.A. same B. friendly C. different D. common

查看答案和解析>>

科目：初中英語 來源：2016屆河南安陽市九年級上學期期中英語試卷（解析版） 題型：書面表達

書面表達

山東濰坊以風箏聞名于世。假如你叫王靜，是山東濰坊人，請根據(jù)提示寫一篇短文介紹一下濰坊風箏。提示：1.山東濰坊以風箏聞名于世，它被全世界的人所熟知。

2.濰坊有各種各樣的風箏，有的像鳥，有的像龍，有的像人。

3.風箏由竹子、紙或絲綢制成。制造者主要是農(nóng)民，手工制造。

4.濰坊國際風箏節(jié)在每年四月舉行，全國各地及世界各地很多人都前來觀看或參加比賽。

要求：1.不要逐字逐句翻譯

2.可適當發(fā)揮

3.詞數(shù)80--100詞

濰坊國際風箏節(jié)Weifang International Kite Festival

查看答案和解析>>

科目：初中英語 來源：2016屆廣西欽州市九年級上學期期中英語試卷（解析版） 題型：閱讀理解

As we all know, people couldn’t live without water. Some parts of our bodies are made of water. We depend on clean water to live every day.

However, we human beings are polluting water seriously. In some areas of China, people are still in great need of clean water. Dirty water is one of the world’s biggest health problems. It’s harmful to our health. When water from the rain and melting(融化) snow runs through roads, it picks up some dangerous chemicals and other things along the way. Many of the rivers are short of protections, so they are easy to be polluted by factories or animals’ waste.

World Water Day has grown to become one of the important dates since 1993. In 2013, World Water Day shares the topic of Water Cooperation(合作). If everyone tries their best to save and protect the clean water, our living conditions will be much better.

1.we know that people couldn’t live without _________ according to the first paragraph.

A. fire B. water C. books D. language

2.Many of the rivers are easy to be polluted by __________.

A. animals B. human beings’ waste

C. fish D. factories or animals’ waste

3.he underlined phrases “pikes up ”in paragraph 2 means“______”.

A. 毀壞 B.接送 C.帶走 D.拾起

4.When has World Water Day become one of the most important dates?

A. since 1993. B. in 1993 C. in 2013. D. since 2013

5.Which of the following is NOT right?

A. Dirty water does harm to humans’health.

B. Human beings aren’t short of clean water.

C. The topic of 2013 World Water Day is Water Cooperation.

D. We should try our best to protect the clean water.

查看答案和解析>>

科目：初中英語 來源：2016屆福建南安市九年級上學期期中英語試卷（解析版） 題型：單項填空

Hurry up, __________ you will miss the early bus.

A. and B. but C. or

查看答案和解析>>

科目：初中英語 來源：2016屆山東慶云縣第五中學九年級上學期期中英語試卷（解析版） 題型：單項填空

- There are fifty students in our class, and of us football.

A. two third, likes

B. two thirds, like

C. two thirds, likes

查看答案和解析>>

同步練習冊答案