72. What’s the best title of the passage?

　 A. How Resources are to be Used.　　 B. The Price System

　 C. The Factors of “Price”　　　　　 D. The Definition of “Price”

答案　 BDCD

Passage 83

(湖北省黄冈市黄州区一中2010届高三第二次月考)

E

　"The world's oceans are slowly getting more acidic,”say scientists. The researchers from California report that the change is taking place in response to higher levels of carbon dioxide in the atmosphere.

　　 The lowering of the waters’pH value is not great at the moment but could cause a serious threat to current ocean life if it continues, they warn. Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature.

Increasing use of oil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater. Once in the water, it reacts to form carbonic acid. Scientists believe that the oceans have already become slightly more acidic over the last century.

　　 These researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change．"This level of acidity will get much more extreme in the future if we continue releasing CO₂ into the atmosphere," said Dr Caldeira. "And we predict the amount of future acidity will exceed(超过)anything we have seen over the last several hundred million years, let alone perhaps after rare disastrous events such as asteroid(小行星) impacts．”

　　 However, it is not absolutely clear what that means for ocean life．Most organisms live near the surface, where the greatest pH change would be expected to occur, but deep-ocean life forms may be more sensitive to pH changes．Coral reefs and other organisms whose shells contain calcium carbonate(小行星) may be particularly affected if the water's acidity levels keep going up, the team predict. They could find it much more difficult to build these structures in water with a lower pH.

　　 In recent years some people have suggested storing carbon dioxide from power stations in the deep ocean as a way of dealing with global warming．But Dr Caldeira said that such a strategy should now be re-considered. "Previously, most experts had looked at ocean absorption of carbon dioxide as a good thing-because in releasing CO₂ into the atmosphere we warm the planet, and when CO₂, is absorbed by the ocean, it reduces the amount of greenhouse warming.”

71. Which statement is true according to the passage?

　 A. Price is an amount of money paid by the buyer to the seller of a product.

　 B. Price is the money value of a product.

　 C. Price is not only an amount of money paid by the buyer to the seller of a product or service but the amount and quality of the product and other factors.

　 D. Price is the asked-for amount of money.

70. How many factors are there to define “Price”?

　 A. more than 7　 B. more than 8　 C. more than 9　 D. more than 10

69. According to the first paragraph, what makes up the price system of the US?

　A. Labor, professional, transportation, and public-utility有益 services.

B. A complex network composed of the prices of all the products bough and sold in the economy and also those of a myriad of services.

C. Any particular product or service.

　D. To depend on “how resources are to be used”.

63. Which of the following can best describe the feeling of the author?

A. Disappointed　　　　　　　　　　　　　 B. Hopeful　　　　　　　　　　　　　 C. Worried　　　　　　　　　　　　　 D. Angry

答案　 ADAC

Passage 82

(浙江省慈溪中学2010届高三第二次月考)

(C)

Prices determine how resources are to be used. They are also the means by which products and services that are in limited supply are rationed among buyers. The price system of the United States is a complex network composed of the prices of all the products bought and sold in the economy as well as those of a myriad众多方面的of services, including labor, professional, transportation, and public-utility services. The interrelationships of all these prices make up the “system” of prices. The price of any particular product or service is linked to a broad, complicated system of prices in which everything seems to depend more or less upon everything else. 　 If one were to ask a group of randomly selected individuals to define “price”, many would reply that price is an amount of money paid by the buyer to the seller of a product or service or, in other words that price is the money values of a product or service as agreed upon in a market transaction. This definition is, of course, valid as far as it goes. For a complete understanding of a price in any particular transaction, much more than the amount of money involved must be known. Both the buyer and the seller should be familiar with not only the money amount, but with the amount and quality of the product or service to be exchanged, the time and place at which the exchange will take place and payment will be made, the form of money to be used, the credit terms and discounts that apply to the transaction, guarantees on the product or service, delivery terms, return privileges, and other factors. In other words, both buyer and seller should be fully aware of all the factors that comprise the total “package” being exchanged for the asked-for amount of money in order that they may evaluate a given price.

62. Which of the following is best supported by the last two paragraphs?

A. The threat to nature from reduction in household size is a worldwide problem.

B. Biodiversity is better kept in countries with smaller populations.

C. Biodiversity better kept in hot-spot countries doesn’t face threat.

D. Both hot-spot countries and non-hot-spot countries face threat of the same percentage.

61. It can be learned from the passage that China’s Wolong Nature Reserve______.

A. is a place where giant pandas and their habitats are not affected.

B. is a place where animals and their habitats are seriously damaged.

C. sets a good example of protecting animals.

D. is facing the same threat as many other parts of the world.

60. What is mainly discussed in the passage?

A. Reduction in household size and increase in household numbers is a danger to nature.

B. Reduced household size leads to an increase in household numbers.

C. Modern homes consume more natural resources.

D. How to meet consumers’ demand without endangering animals and their habitats.

59．Which of the following statements is TRUE?

A．Writing can cure people of their brain disease.

B．People who can keep all thoughts in mind are more likely to succeed.

C．Writing a book about one topic is the only way to understand it.

D．The more you write, the more logical you will be.

答案　 CDBD

Passage 81

(江西省九江一中2010届高三上学期第三次月考)

B

　Animals and the places where they live are getting pushed aside as households(家庭) decrease in size and increase in number.

Smaller numbers of people per household on average use more energy and goods per person. Greater numbers of households require more natural resources for construction. The possible result of the double problems may be that there are not enough natural resources to meet consumers’ demand without endangering habitats important to biodiversity.

Personal freedom and social choice may come at a huge environmental cost. Direct costs include visible damage to animal habitats and plant life. Indirect costs include the release of more greenhouse gases.

The effects of such“personal freedom and social choice” have already surfaced in southwest China’s Wolong Nature Reserve. In Wolong they found that a reduced average household size was directly tied to an increase in homes, and thus an increase in the amount of firewood used for cooking and heating. The rise in wood fuel use has led to the disappearance of forests and to the loss of habitats for giant pandas.

Curious about whether other parts of the world were experiencing a similar situation, they enlisted a team of researchers including Stanford’s Paul Ehrlich, well-known for his population studies, to find out the household dynamics in 141 countries-between 1985 and 2000. Their study proved that the Wolong problem is part of a global trend.

In the 76 countries considered biodiversity “hot spots”, such as the United Stated, Brazil, Australia and Kenya, the number of households grew yearly by 3.1%, while the population increased just 1.8%. Meanwhile, the number of people per home dropped from 4.7 to 4.0. The decrease in household size has resulted in 155 million additional households in hot-spot countries, almost always limiting biodiversity.

In the 65 non-hot-spot countries-those without high-density areas of animals and plant species-similar results were found, though to a lesser degree. Even in countries experiencing population decrease, such as New Zealand, the number of households still increased because of a reduction in household size.

58．What would be the best title for the passage?

A．A Way on How to Write.

B．A More Powerful Mind Through Writing.

C．Brain Power Helps Improve Your Writing.

D．How to Start Your Writing.