they advance through the program, they will learn how to read short sentences with 100% accuracy. A. As B. While C. Though D. Before 题目和参考答案——青夏教育精英家教网—

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_______ they advance through the program, they will learn how to read short sentences with 100% accuracy.

A. As B. While C. Though D. Before

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Sustainable development is applied to just about everything from energy to clean water and economic growth, and as a result it has become difficult to question either the basic assumptions behind it or the way the concept is put to use. This is especially true in agriculture, where sustainable development is often taken as the only measure of progress without a proper appreciation of historical and cultural perspectives.

To start with, it is important to remember that the nature of agriculture has changed markedly throughout history, and will continue to do so. Medieval agriculture in northern Europe fed, clothed and sheltered a popularly rural society with a much lower population density than it is today. It had smallest effect on biodiversity, and any pollution it caused was typically localized. In terms of energy use and the nutrients captured in the product it was relatively inefficient.

Contrast this with farming since the start of the industrial revolution. Competition from overseas led farmers to specialize and increase yields. Throughout this period food became cheaper, safer and more reliable. However, these changes have also led to habitat loss and to decreasing biodiversity.

What’s more, demand for animal products in developing countries is growing so fast that meeting it will require an extra 300 million tons of grain a year by 2050.yet the growth of cities and industry is reducing the amount of water available for agriculture in many regions.

All this means that agriculture in the 21^st century will have to be very different from how it was in the 20th. This will require complete thinking. For example, we need to move away from the idea that traditional practices are unavoidably more sustainable than new ones. We also need to abandon the idea that agriculture can be “zero impact”. The key will be to abandon the rather simple and unchangeable measures of sustainability, which centre on the need to maintain production without increasing damage.

Instead we need a more dynamic explanation, one that looks at the pros and cons of all the various way land is used. There are many different ways to measure agricultural performance besides food yield: energy use, environmental costs, water purity, carbon footprint and biodiversity. It is clear, for example, that the carbon of transporting tomatoes from Spain to the UK is less than that of producing them in the UK with additional heating and lighting. But we do not know whether lower carbon footprints will always be better for biodiversity.

What is critical is recognizing that sustainable agriculture is not just about sustainable food production.

How do people often measure progress in agriculture?

A．By its productivity.

B．By its impact on the environment.

C．By its sustainability.

D．By its contribution to economic growth.

What does the author think of traditional farming practices?

　　A．They have remained the same over the centuries.

　　B．They have not kept pace with population growth.

　　C．They are not necessarily sustainable.

　　D．They are environmentally friendly.

What will agriculture be like in the 21st century?

　　A．It will go through thorough changes.

　　B．It will supply more animal products.

　　C．It will abandon traditional farming practices.

　　D．It will cause zero damage to the environment.

What is the author’s purpose in writing this passage?

　　A．To remind people of the need of sustainable development.

　　B．To suggest ways of ensuring sustainable food production.

　　C．To advance new criteria for measuring farming progress.

　　D．To urge people to rethink what sustainable agriculture is.

One of the most fascinating things about television is the size of the audience. A novel can be on the “bestseller” lists with a sale of up to 100,000 copies, but a popular TV show might have 70 million TV viewers. TV can make anything or anyone well-known overnight.

This is the principle behind “quiz” or “game” shows, which put ordinary people on TV to play a game for prizes and money. A quiz show can make anyone a star, and it can give away thousands of dollars. Charles Van Doren, an English instructor, became rich and famous after winning money on several shows. He even had a career as a television personality. But one of the losers proved that Charles Van Doren was cheating. It turned out that the show’s producers, who were pulling the strings, gave the answers to the most popular competitors in advance. Why? Because if the audience didn’t like the person who won the game, they turned the show off. The result of this cheating was a huge scandal(丑闻). Based on the show off, a movie titled “Quiz Show” is on 40 years later.

Charles Van Doren is no longer involved with TV. But game shows are still here, though they aren’t taken seriously. In fact, some of them try to be as ridiculous as possible. There are shows that send strangers on vacation trips together, or that try to cause newly-married couples to fight on TV, or that punish losers by humiliating(羞辱) them. The entertainment now is to see what people will do just to be on TV. People still win money, but the real prize is to be in front of an audience of millions.

What is the most important thing as to television?

A. How many viewers they can attract B. Becoming the bestseller on the list

C. How much money can be given away D. The number of people attending shows

What does the underlined part “pulling the strings” probably mean?

A. Planning the shows with effort B. Drawing the curtain on the stage

C. Controlling the result secretly D. Playing “quiz” or “game” openly

Charles Van Doren stopped his career as a television personality because ________.

A. he had earned enough wealth and fame. B. one of the competitors had told the truth

C. the film “Quiz Show” was being shown

D. his frequent appearance had bored the audience

It can be inferred from the passage that _______.

A. TV Game Shows are more popular than before.

B. the scandal was not made known until 40 years later

C. getting money is the only purpose of people taking part in shows

D. people can make themselves famous by taking part in shows

Section C

Directions: Read the following passage and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need.

（D）

A. Value of rare skills

B. Dangerous jobs paid more

C. Social demand decides reward

D. Developing skills

E. Women’s skills rewarded

F. Reason for taking low-paying jobs

1. _________________________

The rewards of a skill that is in strictly limited supply depend upon the demand for that skill. Men’s professional basketball is extremely popular, and the top NBA players make millions of dollars per year. There are some great women basketball players, too, but because women’s professional basketball has not become popular, these women’s skills go comparatively unrewarded.

2. _________________________

Some people with very rare skills can make enormous salaries in a free market economy. Paula Abdel has a voice that millions of people are willing to pay to hear in person, and on tapes, CDs, records, and videos. Before Pablo Picasso died, he could sell small sketches for vast sums of money. Were they worth it? They were worth exactly what the highest bidder (出价人) was willing to pay.

3. _________________________

Not all skills are inborn, however. Some people have invested in training and schooling to improve their knowledge and skills. When we go to school, we are investing in human capital that we expect to yield dividends, partly in the form of higher wages, later on. Human capital is also produced through on-the-job training.

4. _________________________

Some jobs are more desirable than others. Entry-level positions in attractive industries such as publishing and television tend to be low-paying. Since talented people are willing to take entry-level jobs in these industries at salaries below what they could earn in other occupations, there must be other, non-wage rewards. It may be that the job itself is more personally rewarding, or that a low-paying apprenticeship is the only way to acquire the human capital necessary to advance.

5. _________________________

On the other hand, compensating differentials are required when an occupation is very dangerous. Workers on skyscrapers and bridges command additional wages. Fire fighters in cities that have many old, run-down buildings are usually paid more than those in relatively tranquil rural or suburban areas.

SectionＤ

Directions: Read the passage carefully. Then answer the questions or complete the statements in the fewest possible words.

_______ they advance through the program, they will learn how to read short sentences with 100% accuracy.

A. As B. While C. Though D. Before

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