【正文】 esh fruit and vegetables develop a good dietary habit on the passage we can safely conclude that if our diet is NOT prehensive enough______. A. vitamin pills are of no avail B. nutritious food might be unhealthy C. vegetable leaves can be a good remedy D. religious fasting may help out a 1ot15. Which of the following sentences best expresses the central ideal of the passage? A. Deficiencies of Vitamin C may cause serious diseases. B. Fresh fruit and green vegetables contain enough nutrition that is necessary for a healthy body. C. Vitamins play a vitally important role in people39。s health. good mixed diet normally supplies sufficient vitamins for us. Passage Four What is the importance of the AfroAmerican history to all Americans? How could AfroAmericans contribute anything to American history when they were just slaves and servants? This is the image which many of us are taught when we go to school. 7his is the image many AfroAmericans have of themselves also. The AfroAmericans need to remake their real historical image so that it is known and accepted in its truth fullness by themselves and the rest of the world. Men and women of darker color are human beings entitled to respect and acceptance in history. When we think of famous scientists and inventors we immediately think of men such as Alexander Graham Bell, Thomas Edison and Jonas E. Salk. This is because we associate famous people with the Anglo Saxon race. But what about the AfroAfrican inventors and scientists? How many men during World War I owe their lives to Garrett Morgan who invented the gas mask? Garrett Morgan also invented the traffic light which saves numerous lives on our streets. Daniel Hale Williams was the first successful heart surgeon. Charles Drew saved hundreds of thousands of lives during World War II by his discovery of the ways and means of preserving blood plasma（血漿）. Percy Julian has helped millions suffering from the excruciating（極痛苦的） pain of arthritis. These men and others should be as easily recognized as Bell, Edison and Salk. America is made up of many different blends of cultures. These many cultures have e to enrich and diversify the American way of life. We should not think because history has neglected to include the background of a particular culture, that these people have an inferior history. We should search for the truth and set the record straight against the slanders, the stereo typing and false images which have identified these people. We should understand each of the cultures and learn of their specific contribution to America39。s life story.Only after we are taught the plete and accurate history of our great country and learn that the blending of cultures and backgrounds gives us our strength, can we go forward on the path to peace.16. The function of the first paragraph is to ______. A. present the main idea or the summary of the essay B. present an introduction to the topic C. provide background to the main theme D. present the many cultures having contributed to American history17. Which of the following statements is TRUE? A. Graham Bell, T, Edison and J. E. Salk are not very important people. B. Black people who contribute to society should have equal recognition with their white colleagues. C. We should not associate famous people with the AngloSaxon race only. . Morgan, . Wllliams and Charles Drew were not AfroAmericans.18. Paragraph Three tells us that ______. A. we should oppose slander and stereo typing B. the American way of life is richer because it is made up of many cultures C. some cultures have been pletely neglected D. AfroAmericans have an inferior history19. The word image (Line 3, Para. l) refers to______. A. picture B. portray C. impression D. similar main idea of the passage is______.A. there are many AfroAmericans who are famous as scientists and inventorsB. many AfroAmericans have devoted to American historyC. AfroAmerican experience to American historyD. AfroAmerican history must be recognized as an important part of American historyPassage 5 Human needs seem endless. When a hungry man gets a meal, he begins to think about an overcoat, when a manager gets a new sports car, a big house and pleasure boats dance into view. 　　The many needs of mankind might be regarded as making up several levels. When there is money enough to satisfy one level of needs, another level appears. 　　The first and most basic level of needs involves food. Once this level is satisfied, the second level of needs, clothing and some sort of shelter, appears. By the end of World War I1, these needs were satisfied for a great majority of Americans. Then a third level appeared. It included such items as automobiles and new houses. 　　By 1957 or 1958 this third level of needs was fairly well satisfied. Then, in the late 1950s, a fourth level of needs appeared: the lifeenriching level. While the other levels involve physical satisfaction, that is. the feed in fort, safety, and transportation, this level stresses mental needs for recognition, achievement, and happiness. It includes a variety of goods and services, many of which could be called luxury items. Among them are vacation trips, the best medical and dental care, and recreation. Also included here are fancy goods and the latest styles in clothing. 　　On the fourth level, a lot of money is spent on services, while on the first three levels more is spent on goods. Will consumers raise their sights to a fifth level of needs as their ine increases, or will they continue to demand luxuries and personal services on the fourth level? 　　A fifth level would probably involve needs that can be achieved best by munity action. Consumers may be spending more on taxes to pay for government action against disease, ignorance, crime, and prejud