题目内容
（请给出正确答案）
The average ______ of beer and alcohol in the United States is very high.
A．absorption
B．digestion
C．exhaustion
D．consumption
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更多“The average ______ of beer and…”相关的问题
The passage is mainly about ______.
A．the average life expectancy
B．the situation of being old
C．the differences between the old and the young
D．the way to stay young when one is actually old
The rule changes are likely to.
A．provide $ 90 billion in financial aid
B．lower the amount of financial aid provided by the government
C．cost each family an average of $1,000 per year
D．have a ripple effect across federal income taxes
听力原文： The advantages and disadvantages of a large population have long been a subject of discussion among economists. It has been argued that the supply of good land is limited. To feed a large population, inferior !and must be cultivated and the good land worked intensively. Thus, each person produces less and this means a lower average income than could be obtained with a smaller population. Other economists have argued that a large population gives more scope for specialization and the development of facilities such as ports, roads and railways, which are not likely to be built unless there is a big demand to justify them.
One of the difficulties in carrying out a world-wide birth control programme lies in the fact that official attitudes to population growth vary from country to country, depending on the level of industrial development and the availability of food and raw materials. In a developing country where a vastly expanded population is pressing hard upon the limits of food, space and natural resources, it will be the first concern of government to place a limit on the birthrate, whatever the consequences might be. A decreasing birthrate may lead to unemployment because it results in a declining market for manufactured goods. When the pressure of population on housing declines, prices also decline and the building industry is weakened. Faced with considerations such as these, the government of a developed country may well prefer to see a slowly increasing population, rather than one which is stable or in decline.
(33)
A．Higher productivity and a higher average income.
B．Higher productivity but a lower average income.
C．Lower productivity but a' higher average income.
D．Lower productivity and a lower average income.
M: Well, it depends on the traffic, but shouldn't toke more than twenty minutes for the average driver. And I'm not average. So we should be able to cruise through traffic and get there in less than twelve minutes.
W: Oh. By the way, do you know what time the museum closes？
M: Around 6:00 o'clock.
W: Do you have the time？
M: Yeah. It's half past four. Hi, this is your first time to the city, right？
W: Yeah.How did you know？
M: Well, you can tell tourists from a mile away in this city because they walk down the street looking straight up at the tall buildings.
W: Was it that obvious？
M: Well...
W: Oh, before I forget, can you recommend any good restaurant downtown that offer meals at a reasonable price？
M: Umm...well, the Mexican restaurant, La Fajita, is fantastic. It's not as inexpensive as other places I know, but the decoration is very authentic, and theportions are larger than most places I've been to.
W: Sounds great! How do I get there from the museum？
M: Well, you can take the subway right outside the museum. There are buses that run that way, but you would have to transfer a couple of times. And there are taxis too, but they don't run by the museum that often.
M: Okay. Thank you so much.
(20)
A．He is an average driver.
B．He is a skilled driver.
C．He is below average.
D．He is a green hand.
Has a Runaway Greenhouse Effect Begun？ (Adapted)
By Norm Dixon
Urgent Action for Governments
In recent weeks, scientists have released two separate findings that indicate the consequences of global warming due to the emission of "greenhouse gases" primarily carbon dioxide (CO2) from the industrial burning of fossil fuels may be far greater than previously estimated.
The new findings stress the need for governments around the world, in particular the industrialized First World countries that are responsible for more than 80% of past emissions and 75% currently, to take urgent action to massively reduce the world's industrial greenhouse gas emissions by 60-80%.
Rajendra Pachauri, chairperson of the United Nations' Intergovernmental Panel on Climate Change (IPCC), which pools the expertise of more than 2,000 of the world's climate scientists, warned on October 25 that the greenhouse gas emission reduction targets established in the 1997 Kyoto agreement do not go far enough and far more radical solutions must be found.
Pachauri welcomed the Russian parliament's October 22 approval of the Kyoto agreement, which will allow the treaty to come into legal force despite the refusal by the world's major polluter, the United States, to sign. However, "this mustn't deceive us into thinking that the problem is solved", Pachauri told Reuters(路透社). "Kyoto is not enough. We have to look at the problem afresh. "The Kyoto treaty aims for a reduction in greenhouse gas emissions of around 5% of 1990 levels, far short o{ the 60-800/oo over the next 50 years necessary to arrest global warming.
CO2 Accumulation Increasing
The new evidence on the pace of global warming suggests that world governments may have even less time to act than previously estimated. The October 11 British Guardian(英国卫报) reported that CO2 in the atmosphere is at record levels and increasing at an accelerating rate, while the September 23 edition of Science revealed that glaciers in western Antarctica flowing into the sea are speeding up, indicating an increased level of melting.
The scientists who make up the IPCC estimate that unless levels of greenhouse gases in the atmosphere are stabilized by mid-century, Earth's average temperature will rise by up to 5.8~C by 2100. According to the IPCC figures, if unchecked, CO2 levels in the air will be between 650 and 970 parts per million (ppm). However, these estimates may be too conservative.
According to the October 11 Guardian, measurements of average atmospheric CO2 levels in 2002 and 2003 may confirm that the rate of CO2 accumulation is now increasing at an alarming rate. Scientists at Hawaii's Mauna Loa Observatory(气象台) reported that average CO2 levels increased by 2.08 ppm in 2002, to 373.1 ppm, and in 2003, to an average of 375.64 ppm. This is the first recorded example of the average CO2 level jumping more than 2 ppm in two successive years. The average increase in the CO2 level over the last few decades, reports the Guardian, has been 1.5 ppm. The current level of CO2 is the highest in at least 420,000 years!
Associated Press (美联社) reported earlier this year, on March 20, that scientists at Mauna Loa Observatory had recorded the CO2 level in the atmosphere peaking at a record of 379 ppm, compared to 376 ppm a year earlier and 373 ppm in 2002.
Global Warming
The increase has implied a "runaway" greenhouse effect already underway. Previous increases of CO2 levels of above 2 ppm—1973, 1988, 1994 and 1998—have coincided with the El Nino(厄尔尼诺现象) weather pattern in the Pacific. However, this cannot explain the latest rises.
A．Y
B．N
C．NG
A.marginal cost ＞ average cost = $16.67
B.marginal cost ＜ average cost = $16.67
C.$16.67 = marginal cost = average cost
D.$16.67 = marginal cost ＞ average cost
Section A
Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item with a single line through the center. You may not use any of the words in the bank more than once.
Air Pollution refers to the addition of harmful substances to the atmosphere resulting in damage to the environment, human health, and【S1】______of life. One of many forms of pollution, air pollution occurs inside homes, schools, and offices; in cities; across continents; and even【S2】______. Air pollution makes people sick—it causes breathing problems and【S3】______cancer—and it harms plants, animals, and the ecosystems (生态系统) in which they live. Some air pollutants return to earth in the form. of acid rain and snow, which destroy【S4】______and buildings, damage crops and forests, and make lakes and streams【S5】______for fish and other plant and animal life.
Pollution is changing Earth's atmosphere so that it lets in more harmful radiation from the Sun. At the same time, our polluted atmosphere is becoming a better insulator (绝缘体), which can【S6】______heat from escaping back into space and lead to a rise in global average temperatures. Scientists【S7】______that the temperature increase, referred to as global warming, will affect world food supply, alter sea level, make weather more【S8】______, and increase the spread of tropical disease.
Although the effects of future【S9】______change are unknown, some report that exaggerated weather conditions may【S10】______affect agriculture, for example, it may lead to severe drought and sharply decreasing agricultural yields in parts of Africa.
A) globally B) promotes C) predict D) unsuitable
E) science F) dramatically G) protect H) prevent
I) quality J) climate K) statues L) significant
M) powerful N) moderately O) extreme
【S1】
【C11】
A．in general
B．on average
C．by contrast
D．at length
