A German study suggests that people who were too optimistic about their future actually faced greater risk of disability or death within 10 years than those pessimists who expected their future to be worse.

　　The paper, published this March in Psychology and Aging, examined health and welfare surveys from roughly 40,000 Germans between ages 18 and 96. The surveys were conducted every year from 1993 to 2003.

　　Survey respondents (受访者) were asked to estimate their present and future life satisfaction on a scale of 0 to 10, among other questions.

　　The researchers found that young adults (age 18 to 39) routinely overestimated their future life satisfaction, while middle-aged adults (age 40 to 64) more accurately predicted how they would feel in the future. Adults of 65 and older, however, were far more likely to underestimate their future life satisfaction. Not only did they feel more satisfied than they thought they would, the older pessimists seemed to suffer a lower ratio (比率) of disability and death for the study period.

　　“We observed that being too optimistic in predicting a better future than actually observed was associated with a greater risk of disability and a greater risk of death within the following decade,” wrote Frieder R. Lang, a professor at the University of Erlangen-Nuremberg.

　　Lang and his colleagues believed that people who were pessimistic about their future may be more careful about their actions than people who expected a rosy future.

　　“Seeing a dark future may encourage positive evaluations of the actual self and may contribute to taking improved precautions (预防措施),” the authors wrote.

　　Surprisingly, compared with those in poor health or who had low incomes, respondents who enjoyed good health or income were associated with expecting a greater decline. Also, the researchers said that higher income was related to a greater risk of disability.

　　T  Pessimism gurantees chances of survival.he authors of the study noted that there were limitations to their conclusions. Illness, medical treatment and personal loss could also have driven health outcomes.

　　However, the researchers said a pattern was clear. “We found that from early to late adulthood, individuals adapt their expectations of future life satisfaction from optimistic, to accurate, to pessimistic,” the authors concluded.

　　67. According to the study, who made the most accurate prediction of their future life satisfaction?

　　A. Optimistic adults.

　　B. Middle-aged adults.

　　C. Adults in poor health.

　　D. Adults of lower income.

　　68. Pessimism may be positive in some way because it causes people ______.

　　A. to fully enjoy their present life

　　B. to estimate their contribution accurately

　　C. to take measures against potential risks

　　D. to value health more highly than wealth

　　69. How do people of higher income see their future?

　　A. They will earn less money.

　　B. They will become pessimistic.

　　C. They will suffer mental illness.

　　D. They will have less time to enjoy life.

　　70. What is the clear conclusion of the study?

　　A. Pessimism guarantees chances of survival.

　　B. Good financial condition leads to good health.

　　C. Medical treatment determines health outcomes.

　　D. Expectations of future life satisfaction decline with age.

完形填空：阅读下面短文，掌握其大意，然后从各题所给的四个选项中选出一个最佳答案。（共20小题，每小题1.5分）
In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be　46　.                    Today things are　 47　 , the world has become too　 48　 . We are using up our natural resources too quickly, and at the same time we are　 49　 our environment with dangerous chemicals. If we continue to do this, human life on the earth　 50　 survive.
　　Everyone　51　 today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing　 52 , more and more fish are caught. We know that if too many trees are cut down, 　53　 will disappear and nothing will grow on the land. Yet, we　 54　 to use bigger and more powerful machines to　55　 more and more trees.
　　We realize that if rivers are polluted with waste products from factories, we will die.　 56　 , in most countries wastes are　 57　put into rivers or into the sea, and there are　 58　 laws to stop this. We know, too, that if the　 59　of the world continues to rise at the present rate, in a few years there will not be enough 60　. What can we do to solve these problems ?
　  If  we eat more vegetables and less　 61　 , there will be more food available for everyone. Land that is used to grow crops　 62　 five times more people than land where animals are kept. Our natural resources will　 63　 longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth 64　 .
　　Finally, if we educate people to think about the problems, we shall have a better and clearer 65　in the future.

In the summer of 1936, people all over the world heard the name of Jesse Owens. That summer, Jesse joined the best athletes from 50 nations to compete in the Olympic Games. They met in Germany, in the city of Berlin.

There was special interest in the Olympic Games that year.

Adolf Hitler was ruler of Germany. Hitler and his Nazi Party believed that white people—especially German people—were the best race of people on earth. They believed that other races of people—especially those with dark skin—were almost less than human. In the summer of 1936, Hitler wanted to prove his beliefs to the world. He wanted to show that German athletes could win every important competition.

Jesse Owens was black, too. Until 1936, very few black athletes had competed in the Olympic Games for the United States. Jesse was proud to be on the team. He was very sure of his ability.

Jesse spent one week competing in four different Olympic track and field events in Berlin. During that time, he did not think much about the color of his skin, or about Adolf Hitler. At last, Jesse Owens won the highest award—the gold medal—in all four of the Olympic, competitions he entered. In the hundred meter run, he equaled the fastest time ever run in that Olympic event. In the long jump and the 200-meter run, he set new Olympic records. And as part of a four-man team, he helped set a new world record for the 400-meter relay race.

　　  1. How many nations took part in the Olympic Games in 1936?

　　　　  A. 50　　　　   B. 55　　　　　　　　  C. 60    　　　　  D. 65

　　  2. What can be inferred from the passage?

　　　　  A. Hitler thought of Jesse Owens as a hero.

　　　　  B. Hitler believed that black people were worse than white people.

　　　　  C. Jesse Owens was black.

　　　　  D. Jesse Owens was not confident in himself when he took part in the Olympic Games.

　　  3. In which city was the Olympic Games held in 19367

　　　　  A. In New York.　　　　    B. In London.

　　　　  C. In Germany.　　　　　　 D. In Berlin.

　　  4. What does the passage mainly talk about?

　　　　  A. Hitler's belief that German people were better than any other race of people in the world.

　　　　  B. Black young man—Jesse Owens—became famous by winning four gold medals in the Olympic Games in 1936.

　　　　  C. Jesse succeeded in the Olympic Games because of his hard training.

　　　　  D Hider hated black people, especially Jesse Owens.