跟踪导练（一）2

阅读理解

A

It is a great， big， wide-open sky over our heads， but when you are flying in a jet airliner at 600 miles an hour， the sky is not so big. Thats part of the reason why， in the first four months of this year， the government said only 72 percent of all flights arrived on time， the lowest number since the recent system of reporting began in 1995.

The runways are full， the planes are jammed， and air traffic controllers complain theyre stressed out. And the radar systems that keep things going are， in large part， technology of the 1960s. “Its like driving down the road with a paper bag over your head， and youre trying to stay out of the way of other cars，” says Captain Karen Lee， a 747 pilot who heads operations for UPS， the delivery service.

At its center in Louisville， UPS is experimenting with the next generation in air traffic control： planes guided by the satellites of the Global Positioning System， instead of radar.

Though it has advanced greatly over the years， radar is a technology that dates back to World War II. It scans the sky， looking for signals from planes in the air. Typically， air traffic radar only updates a planes position once every 12 seconds or so — and in 12 seconds， a jet can move two miles or make a turn. Whats more， radar signals can be blocked by storms or mountains. But with GPS signals， pilots can see in real time exactly where they are， and where other planes are， too. A readout screen in the cockpit （驾驶舱） tells the pilots whats around them.

“What we end up with is a very exact location for each aircraft in the system，” said Basil Barimo of the Air Transport Association， which represents airlines.

1. Whats the main cause of the jamming of planes？

A. Planes fly very fast.

B. The control system has fallen behind.

C. The number of planes is increasing too fast.

D. The weather has become worse these years.

2. What will be used to solve the jamming of planes？

A. A new satellite.

B. A more advanced radar system.

C. A Global Positioning System.

D. A readout screen in the cockpit.

3. What is the disadvantage of the present radar system according to the text？

A. It sometimes loses objects.

B. It often provides unclear pictures.

C. It cannot help pilots know where they are.

D. Its signals may be limited for certain reasons.

4. It can be inferred that what matters in the air is for the pilots ___ .

A. to see the planes around

B. to communicate with the ground

C. to control the speed of the planes

D. to know exactly the position of each other

B

According to one story， the idea for making the first teddy bear came from a newspaper cartoon drawn in 1904. This cartoon showed President Teddy Roosevelt on a hunting trip refusing to shoot （射杀） a young bear. The young bear became a symbol for Teddy Roosevelt.

Morris Michtom owned a small candy and toy store in New York City. He and his wife made many of the toys they sold. When he saw the cartoon， he had a wonderful idea. He decided to make a toy bear with eyes and legs and arms that moved. The bear was put in the store window next to a copy of the cartoon. Mr Michtom called it “Teddys Bear”.

Many of these bears were sold. The bears became so popular that Mr. Michtom thought he might need President Roosevelt permission to use his name. He wrote to the president and sent him a “Teddy Bear”. The president answered， saying that Mr. Michtom could use his name.

Mr Michtom borrowed money so that he could make thousands of toy bears. His company became the Ideal Toy Corporation. Today this is one of the biggest toy companies in the United States.

1. People will remember Morris Michtom because he was ___ .

A. a candy store owner B. a toy store owner

C. the inventor of the teddy bear D. Teddy Roosevelt friend

2. The idea for making the first teddy bear came from ___ .

A. a movie B. a magazine story

C. a TV advertisement D. a newspaper cartoon

3. From this passage we can see that ___ .

A. many people probably liked Teddy Roosevelt

B. many people did not like Teddy Roosevelt

C. President Roosevelt did not like young bears

D. President Roosevelt cared only about important people

选词填空

从下列方框里10个单词中选择8个适当单词的正确形式填入下列各句中，使其句意完整。每个单词只使用一次。

expert abandon shoot desert distance

camel supply suddenly vacation diamond

1. You can see the mountain in the ____ .

2. The broken bike was found ____ by the roadside.

3. Large areas of land have become ____ .

4. It ____ us with a variety of news every day.

5. She ____ a wolf and two bears.

6. ____ ， all the lights in my house went off.

7. An Arab was travelling in the desert on his ____ .

8. This opinion was held by all the ____ .

单句改错（下列各句中有1个错误。）

1. He looks as his father does at his age. ___

2. The head office is on the central part of the city. ___

3. The time that the plane takes up is not yet known. ___

4. The villagers have to walk long distance to get water. ___

句子翻译

1. 我父母不再允许我与你一起旅行。

2. 我向窗外看去，但什么也没看见。

3. 这幅画不像她，看起来像她的女儿。

4. 我父亲常常白天坐在他的椅子上睡觉。