单选题Questions 14 ～ 17 are based on the following conversation.

单选题America is a country on the move. In unheard of numbers, people of all ages are exercising their way to better health. According to the latest figures, 59 percent of American adults exercise regularly-up 12 percent from just two years ago and more than double the figure of 25 years ago. Even non-exercisers believe they would be more attractive and confident if they were more active. It is hard not to get the message. The virtues of physical fitness are shown on magazine covers, postage stamps, and television ads for everything from beauty soaps to travel books. Exercise as a part of daily life did not catch on until the late 1960s when research by military doctors began to show the health benefits of doing regular physical exercises. Growing publicity (宣传) for races held in American cities helped fuel a strong interest in the ancient sport of running. Although running has leveled off in recent years as Americans have discovered equally rewarding--and sometimes safer-forms of exercise, such as walking and swimming, running remains the most popular form of exercise. As the popularity of exercise continues to mount, so does scientific evidence of its health benefits. The key to fitness is exercising the major muscle groups vigorously (强有力地) enough to approximately double the heart rate and keep it doubled for 20 to 30 minutes at a time. Doing such physical exercises three times or more a week will produce considerable improvements in physical health in about three months.

单选题You will hear four dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE.

单选题Why did some of the spectators walk away casually from the smoke?

单选题In the United States, medical treatments are ______.

单选题______ the weather was fine, I opened all the windows. [A] For [B] Because of [C] Now that [D] Since that

单选题Questions 22～25 are based on the following conversation.

单选题 Questions 22～25 are based on the following dialogue.

单选题The patient was cured lay______.

单选题Whoisthevisitor?A.Mr.Johnson.B.JaneJohnson.C.JaneMcDonald.D.McDonaldJobnson.

单选题 IQuestions 14～17 are based on the following dialogue./I

单选题Questions 11 to 14 are based on the conversation you have just heard.

单选题Whatdoesthemanwanttodo?