Section 1

　　Directions: Each of the following passages is followed with five questions. For each

　　question there are four choices. Choose the best answer to each

　　question. Then blacken the corresponding letter on the Answer Sheet.

　　Questions 41 to 45 are based on the following passage:

　　If we observe carefully, we can find that most of the flowers in nature are red, orange and yellow. If we have seen a black flower, it's a chance in a million. People have made a census (普查) to colors of more than four thousand kinds of flowers and discovered that only eight of them are black. Why?

　　As we know, sunlight is formed by seven different kinds of colored light. The wave length of each light changes, so the quantity of heat in each light changes, too. Flowers, especially their petals (花瓣), are very delicate (纤弱) and prone (易于) to the harm caused by high temperature. Black flowers can take in all the light waves, which cause the flowers to dry up in a high temperature. So black flowers can rarely survive sunlight. But red flowers, orange flowers and yellow flowers can protect themselves from sunlight by reflecting (反射) the red light, orange light and yellow light, each of which has a large quantity of heat.

　　That is why red, orange and yellow flowers are very common in nature while black flowers are so rare.

　　41. We can hardly find black flowers because .

　　A. they are so weak that it's difficult for them to grow up

　　B. there are no black flowers in the world

　　C. the petals of black flowers are very delicate

　　D. they can take in the light of all wave lengths, which make the flowers dry up

　　42. Sunlight is formed by .

　　A. many different kinds of colored light

　　B. three different kinds of colored light: red, orange and yellow

　　C. seven different kinds of colored light

　　D. four thousand kinds of colored light

　　43. Which of the following statement is wrong?

　　A. People have found that only a few kinds of flowers are black.

　　B. Flowers are easy to be harmed by very high temperature.

　　C. Red, orange and yellow flowers can also absorb the light of all wave lengths.

　　D. The black flowers can not protect themselves from sunlight.

　　44. The red, orange or yellow light contains .

　　A. less heat than the other lights B. more heat than the other lights

　　C. a great deal of heat D. a little heat

　　45. "It is a chance in a million" means .

　　A. it is common B. it's extremely rare

　　C. it's lucky D. it's impossible

　　Questions 46 to 50 are based on the following passage:

　　There are stock markets in large cities in many countries. Stock markets in Paris, London, Tokyo, Shanghai and New York are among the largest and most well-known. The stock market, also called stock exchange, is a place where people can buy or sell the shares of a factory or company. And each share means part ownership of a factory or company.

　　Different people go to the stock markets. Some are rich, who want to get more money than they have. Others are not very rich, who buy stocks to try to become rich. Still others buy stocks as part of their plan to save money.

　　Of course, investing (投资) money in the stock market is not the safest way to make money. No one can tell exactly whether the shares will be doing well. The factory or company may do badly. Then the stocks will go down, and the investors will lose money. The stock may go up or down for a number of untold reasons. Everyone wants the stock to go up, but sometimes even if a factory or company does a good job, the stock may still go down.

　　No wonder going to the stock market is often compared to gambling(赌博). All are eager to make money by “gambling” in the stock market. Factories and companies that need money are pleased that so many people are willing to “gamble.” Indeed, the stock market is an attractive and complex part of the business world.

　　46. The following people go to the stock market EXCEPT those who ______.

　　A. want to become richer B. want to get rid of poverty

　　C. want to save money D. want to find jobs

　　47. Which of the following statements is true?

　　A. A good investor can affect the change in stock prices.

　　B. A good investor can tell exactly when the stock goes up or down.

　　C. A good investor will sometimes lose money.

　　D. A good investor knows how to choose a company which does a good job.

　　48. In the passage the writer ______.

　　A. encourages people to go to the stock market

　　B. assures people that buying stocks is a good investment

　　C. warns people to be careful in buying stocks

　　D. explains how stock goes up when factories or companies run well

　　49. The word “complex” in the last sentence probably means ______.

　　A. complete B. strange C. difficult D. modern

　　50. The passage mainly tells us about ______.

　　A. the ABCs of stock markets

　　B. gambling in stock markets

　　C. how to make money in stock markets

　　D. how to buy or sell shares in stock markets





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