题目内容

Ancient China was a place1. _______ states were often 2. ______ war with each other. But it was also a time 3._______ there were many great philosophers. Confucius (55I BC --- 479BC ) is the philosopher4. ________ influence has been the greatest. He stressed the importance of kindness, duty and order in society. Chinese society was influenced by these ideas for more than 2000 years. Mencius was a thinker whose teachings were very similar to 5. ________ of Confucius.

What will the city of the future look 6. _______ ? No one knows7. ______ sure, and making predictions is a risky business. But one thing is certain ----- they are going to get bigger 8. _______ they get smaller. In the future, care for the environment will become very important 9.______ earth’s natural resources give out. We will use lots of recycled materials, such as plastic, aluminium, steel, glass, wood and paper, and we will waste fewer natural resources. We will also have to rely more 10.________ alternative energy, such as solar and wind power.

 

1.where

2.at

3.when

4.whose

5.those

6.like

7.for

8.before

9.as

10.on

【解析】

试题分析:

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

考点:短文填空

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Smoggy weather has become common in China. But these days, air pollution levels in the north eastern city of Harbin surpassed the previous record levels.

The city was essentially shut down after PM2. 5, fine Particulate(微粒物) pollution that is considered hazardous(有害的) . reached levels of 1000 micrograms per cubic meter-40 times the safety level remended by the World Health Organization. Schools, motorways and an airport were closed on Tuesday as visibility in some areas of the city dropped to less than 10 meters.

Photos from Harbin showed residents covering their mouths with masks and scarves, and moving like ghostly shadows through the fog. Cars and motorcycles are moving slowly as traffic came to a standstill with traffic lights barely visible. .

Just days previously , the World Health Organization's International Agency for Research on Cancer (IARC) classified air pollution as a carcinogen(致癌物) . It stated that there is " sufficient evidence" that exposure to outdoor air pollution causes lung cancer and also linked it with an increased risk of bladder cancer. It's said that exposure has increased significantly particularly in " rapidly industrial countries with large populations".

"The air we breathe has become polluted with a mixture of cancer-causing substances" , Dr Kurt Straif , head of the IARC said in a press released. "We now know that outdoor air pollution is not only a major risk to health in general, but also a leading environmental cause of cancer deaths. "

On the Chinese social media site Weibo , many users complained about the pollution and shared their concerns. References to "feed people with smog "have become popular on Weibo and there is a sarcastic play on the expression "serve the people" , as the two have a similar pronunciation.

"The impact of air pollution on people will be gradual. There won't be a sudden outbreak of symptoms, but normally three to five days after the smoggy weather occurs, there is a peak in the number of people seeing doctors, " Deng Ying, a doctor at the Second Affiliated Hospital of Harbin Medical University was quoted as saying.

1. As thick smog has become a common scene in Harbin, ______

A. students there can go to school as usual

B. residents in the city can see as far as 20 meters

C. traffic lights can be easily visible

D. the urban traffic has been seriously influenced

2. When exposed to outdoor air pollution, what kind of disease can be caused?

A. Cancer of stomach B. Breast cancer C. Bladder cancer D. Ovarian cancer

3. According to Dr Kurt Straif , we can learn that_______.

A. the effect of the. smoggy weather is gradual

B. air pollution is the man environmental cause, of cancer deaths

C. exposure has greatly increased in countries with large populations

D. "feed people with smog" has bee a hot word

4. The purpose of this passage is to

A. awaken people's environmental awareness

B. warn people not to go out in smoggy weather

C. call for the public to wear their masks

D. advise people not to live in Harbin

 

A blind baby is doubly handicapped. Not only is it unable to see, but because it cannot receive the visual stimulus(刺激)from its environment that a sighted child does, it is likely to be slow in intellectual development. Now the ten-month old son of Dr. and Mrs. Dennis Daughters is the subject of an unusual psychological experiment designed to prevent a lag(滞后)in the learning process. With the aid of a sonar-type electronic that he wears on his head, infant(婴儿) Dennis is learning to identify the people and objects in the world around him by means of echoes(回声).

The device is an improvement of the “Sonicguide”, an instrument produced by Telesensory Systems, Inc., of Palo Alto, Calif, and used by blind adults in addition to a smart or guide dog. As adapted for Dennis, it consists of a battery-powered system about the size of a half dollar that is on a headgear. A transmitter sends out an ultrasonic(超声的) pulse that creates an 80 degree cone of sound at 6 feet. Echoes from objects within the cone are perceived (felt) as sounds that vary in pitch(音调) and volume(音量) with the size and distance of the object.

The closer an object is, the lower the pitch, and the larger the object, the louder the signal. Hard surfaces produce a sharp ping, while soft ones send back signals with a slightly fuzzy quality. An object slightly to the right of Denny’s sends back a louder sound to his right ear than to the left. Thus , by simply moving his head right and left and up and down, he can not only locate an object but also get some notion of its shape and size, thanks to the varying qualities of sounds reaching his ears as the cone of ultrasound(超声波) passes its edges. Dennis likes to use the device to play a kind of peek-a-boo with his mother. Standing on her knee and facing her directly, he receives a strong signal in both ears. By turning his head away, he makes her seem to disappear. “From the first time he wore it,” says Mrs. Daughters, “it was like a light going on in his head.”

What remains to be determined is how well the device will help Dennis cope with his surroundings as he begins to walk and venture further into his environment.

Meanwhile, Telesensory, Inc, is working on the development of sonar(声纳) device with somewhat the same sensitivity as Dennis’s for use by school-age children.

1.Dr. and Mrs. Daughters’ research is directed to ________.

A. helping the blind to see and learn as well as others

B. benefiting the learning process of blind children

C. solving blind children’s psychological problems

D. finding out how children develop intellectually

2.Infant Dennis becomes the subject of the experiment most probably because ________.

A. he already lags behind the sighted children

B. he leads a life as normal as any other children

C. he is at the early stage of the learning process

D. he has the aid of a sonar-type electronic device

3.What can we learn about infant Dennis’ device?

A. Its first design was designed for blind adults.

B. Its battery is as small as a half-dollar coin.

C. It is functionally similar to a sane and guide dog.

D. It has been improved by Telesensory Systems, Inc.

4.In the third paragraph, “its edges” refers to ___________ .

A. the edge of an object

B. the edge of the device

C. the boundary of Dennis’ movement

D. the boundary of the sound pitch.

 

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