?2014年廣東自考學(xué)位英語真題及答案（四）

2014年廣東自考學(xué)位英語真題及答案（四）

Passage Three

Scientists measured the ipact that people have on the enviroment using a term called carbon “footprint.” That footprint reflects the amount of carbon dioxide that is emitted(排放)into the atmosphere as a result of someone’s daily activities. Carbon footprints tend to be low for cith dwellers (城鎮(zhèn)居民). Living in a suburb outside a city, however, can tern that footprint into a bootpring.

Energy researchers Christopher Jones and Daniel Kammen calculated carbon footprints for people in every zip code across the United States. People living in city centers had small footprints, the researchers found. “It is much easier to have a low carbon impact if your home is close to where your work, shop and play,” explain Jones. Living within walking or biking distance cuts back on the amount of carbon dioxide associated with moving people by cars. And cities with extensive bus and subway networks allow people to travel great distances while keeping releases of climate-altering green house gases low.

Not everyone can afford to live in the city, however. And not everyone wants to. Rings of suburbs have popped up around major cities across the world. Suburbs offer more space, allowing people to build larger homes. Suburbs may offer better schools for a family’s kids. But those homes are typically well beyond walikg distance from where their owners work, play and learn. So people who live in suburbs often drive long distances.

The new findings are an important contribution to climate research, says Matthew Kahn, an enviromental economist at the University of California, who was not involved with the study. Kahn would like to see the analysis applied to other parts of the world – Europe, India and China, for instance. That would give scientists a better feel for how culture might mix with location to influence our carbon footprints.

26.“Footprint”refer to the amount of carbon dioxide released by ________.

A. an industry B. an individual C. a region D. a country

27.What is the new finding concerning the footprints of people living in cities and those living in suburbs?______

A. The two are not at all comparable.

B. The former are higher than the latter.

C. The latter are higher than the former.

D. The former are similar to the latter.

28. What is the key factor mentioned to explain the new findings?_____

A. Distance traveled by cars

B. Spending habits.

C. Size of families.

D. Attitude towards energy saving.

29.What does Matthew Kahn think of the new findings?______

A. He is confused by the mixed messages.

B. He thinks highly of them.

C. He can easily understand them.

D. He doubts their validity.

30.What is the purpose of the author in writing the passage?_______

A. To call on people to reduce carbon footprints.

B. To offer tips on how to live a low-carbon life.

C. To clear up misunderstandings about carbon emission.

D. To introduce the research on carbon footprints.

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