超星 - Unit 8 Money

单选题

Passage 1Questions 16 to 20 are based on the following passage:In the late 1960’s, many people in North America turned their attention to environmental problems, and new steel-and-glass skyscrapers were widely criticized. Ecologists pointed out that a cluster of tall buildings in a city often overburdens public transportation and parking lot capacities.Skyscrapers are also lavish (浪费的) consumers, and wasters, of electric power. In one recent year, the addition of 17 million square feet of skyscraper office space in New York City raised the peak daily demand for electricity by 120,000 kilowatts—enough to supply the entire city of Albany, New York, for a day.Glass-walled skyscraperscan be especially wasteful. The heat loss or gain through a wall of half-inch plate glass is more than ten times that through a typical masonry (砖石) wall filled with insulation board. To lessen the strain on heating and air-conditioning equipment, builders of skyscrapers have begun to use double-glazed panels of glass, and reflective glasses coated with silver or gold mirror films that reduce glare as well as heat gain. However, mirror-walled skyscrapers raise the temperature of the surrounding air and affect neighboring buildings.Skyscrapers put a severe strain on a city’s sanitation facilities, too. Skyscrapers also interfere with television reception, block bird flyways, and obstruct air traffic. In Boston in the late 1960’s, some people even feared that shadows from skyscrapers would kill the grass on Boston Common.Still, people continue to build skyscrapers for all the reasons that they have always built them—personal ambition, civic pride, and the desire of owners to have the largest possible amount of rentable space.Question:What’s the main purpose of the passage?

A. To discuss the effect of skyscrapers on the environment.
B. To compare skyscrapers with other modern structures.
C. To support the use of masonry in the construction of skyscrapers.
D. To illustrate some architectural designs of skyscrapers.

查看答案

单选题

According the passage, what is one disadvantage of skyscrapers that have mirrored walls?

A. The surrounding air is heated.
B. They produce more glare for those inside the skyscrapers.
C. The construction time and cost are increased.
D. Extra air-conditioning equipment is needed.

查看答案

单选题

According to the passage, in the late 1960’s which aspect of skyscrapers were some residents of Boston concerned with?

A. The harmful effects on the city’s grass.
B. The noise from their construction.
C. The removal of trees from building sites.
D. The high cost of rentable office space.

查看答案

单选题

Which of the following groups would be most concerned with the issues that the author raises?

A. Electricians.
B. Manufacturers.
C. Environmentalists.
D. Gardeners.

查看答案

单选题

What is one of the reasons that people continue to build skyscrapers?

A. To improve a city’s sanitation facilities.
B. To gain more profits.
C. To save energy.
D. To save parking lot capacities.

查看答案

单选题

Passage2Questions 21 to 25 are based on the following passage:In the past oysters (牡蛎) were raised in much the same way as farmers raised tomatoes—by transplanting them. First, farmers selected the oyster bed. Next, they “planted”fertilized oyster eggs, which within two or three weeks hatched into larvae (幼虫). The larvae drifted until they attached themselves to the clean shells on the bottom. There they remained and in time grew into baby oysters called seed or spat. The spat grew larger by drawing in seawater from which they derived particles of food. Before long, farmers gathered the baby oysters, transplanted them in other waters to speed up their growth, then transplanted them once more into another body of water to fatten them up.Until recently the supply of wild oysters and those crudely farmed were more than enough to sat isfy people’s needs. But today the delicious seafood is no longer available in abundance. The problem has become so serious that some oyster beds have vanished entirely.Fortunately, as far back as the early 1900’s marine biologists realized that if new measures were not taken, oysters would become extinct or at best a luxury food. So they went to work. But they did not have the proper equipment or the skill to handle the eggs. They did not knowwhen, what, and how to feed the larvae. And they knew little about the predators (食肉动物) that attack and eat baby oysters by the millions. They failed, but they kept at it and refused to give up in the face of difficulty. Finally, in the 1940’s a significant breakthrough was made.Question:The main idea of the passage is ______.

A. the cultivation of oysters
B. the discoveries made by marine biologists
C. the threatened extinction of marine life
D. the varieties of wild oysters

查看答案

单选题

What other industry is the production of oysters compared to?

A. Banking
B. Farming.
C. Fishing.
D. Mining.

查看答案

单选题

Which of the following “growing process”is correct?

A. From larvae to fertilized eggs, and then into spat.
B. From fertilized eggs to larvae, and then into spat.
C. From fertilized eggs to spat, and then into larvae.
D. From larvae to spat, and then into fertilized eggs.

查看答案

单选题

According to the passage, which of the following words best describes the effortof the marine biologists working on oysters?

A. Fruitless.
B. Collective
Conscious.
D. Persistent.

查看答案

单选题

Which of the following best describes the organization of the passage?

A. Random presentation of facts about oysters.
B. Description of oyster production arranged according to the order of time.
C. Discussion of events concerning oyster production at different places.
D. Step by step description of the evolution of marine biology.

查看答案