【正文】 dcarry the hatchlings （幼龜） down to the water’s edge lest they bee disoriented by headlights and crawl towards a motel parking lot instead. A formidable wall of bureaucracy has been erected to protect their prime nesting on the Atlantic coastlines. With all that attention paid to them, you’d think these creatures would at least have the gratitude not to go extinct.　　　52. We can learn from the first paragraph that ________.　　A. human activities have changed the way turtles survive　　B. efforts have been made to protect turtles from dying out　　C. government bureaucracy has contributed to turtles’ extinction　　D. marine biologists are looking for the secret of turtles’ reproduction　　53. What does the author mean by “Nature is indifferent to human notions of fairness” （Line 1, Para. 2）？　　A. Nature is quite fair regarding the survival of turtles.　　B. Turtles are by nature indifferent to human activities.　　C. The course of nature will not be changed by human interference.　　D. The turtle population has decreased in spite of human protection.　　54. What constitutes a major threat to the survival of turtles according to Elizabeth Griffin?　　A. Their inadequate food supply.　　B. Unregulated mercial fishing.　　C. Their lower reproductively ability.　　D. Contamination of sea water　　55. How does global warming affect the survival of turtles?　　A. It threatens the sandy beaches on which they lay eggs.　　B. The changing climate makes it difficult for their eggs to hatch.　　C. The rising sea levels make it harder for their hatchlings to grow.　　D. It takes them longer to adapt to the high beach temperature.　　56. The last sentence of the passage is meant to ________.　　A. persuade human beings to show more affection for turtles　　B. stress that even the most ugly species should be protected　　C. call for effective measures to ensure sea turtles’ survival　　D. warn our descendants about the extinction of species　　Passage Two Questions 57 to 61 are based on the following passage.　　There are few more sobering online activities than entering data into collegetuition calculators and gasping as the Web spits back a sixfigure sum. But economists say families about to go into debt to fund four years of partying, as well as studying, can console themselves with the knowledge that college is an investment that, unlike many bank stocks, should yield huge dividends.　　　　57. What’s the opinion of economists about going to college?　　A. Huge amounts of money is being wasted on campus socializing.　　B. It doesn’t pay to run into debt to receive a college education.　　C. College education is rewarding in spite of the startling costs.　　D. Going to college doesn’t necessarily bring the expected returns.　　58. The two Harvard economists note in their study that, for much of the 20th century, ________.　　A. enrollment kept decreasing in virtually all American colleges and universities　　B. the labor market preferred highschool to college graduates　　C. petition for university admissions was far more fierce than today　　D. the gap between the earnings of college and highschool graduates narrowed　　59. Students who attend an instate college or university can ________.　　A. save more on tuition　　B. receive a better education　　C. take more liberalarts courses　　D. avoid traveling long distances　　60. In this consumerist age, most parents ________.　　A. regard college education as a wise investment　　B. place a premium on the prestige of the College　　C. think it crucial to send their children to college　　D. consider college education a consumer product　　61. What is the chief consideration when students choose a college today?　　A. Their employment prospects after graduation.　　B. A satisfying experience within their budgets.　　C. Its facilities and learning environment.D. Its ranking among similar institutions.2009年12月cet6 Many countries have made it illegal to chat into a handheld mobile phone while driving. But the latest research further confirms that the danger lies less in what a motoristis hands do when he takes a call than in what the conversation does to his brain. Even using a “handsfree” device can divert a driveris attention to an alarming extent. 47. Carrying on a mobile phone conversation while one is driving is considered dangerous because it seriously distracts .48. In the experiments, the two groups of volunteers were asked to handle a series of moving tasks which were considered .49. Results of the experiments show that those who were making the equivalent of a handsfree call took to react than those who were not.50. Further experiments reveal that participants tend to respond with extra delay if they are required to do .51. The author believes persuasion, rather than , might be the only way to stop people from using mobile phones while driving.Passage OneQuestions 52 to 56 are based on the following passage. There is nothing like the suggestion of a cancer risk to scare a parent, especially one of the overeducated, ecoconscious type. So you can imagine the reaction when a recent USA Today investigation of air quality around the nationis schools singled out those in the smugly（自鳴得意的）green village of Berkeley, Calif., as being among the worst in the country. The cityis public high school, as well as a number of daycare centers, preschools, elementary and middle schools, fell in the lowest 10%. Industrial pollution in our town had supposedly turned students into living science experiments breathing in a laboratoryis worth of heavy metals like manganese, chromium and nickel each day. This in a city that requires school cafeterias to serve organic meals. Great, I thought, organic lunch, toxic campus. 52. What does a recent investigation by USA Today reveal?A) Heavy metals in lab tests threaten childrenis health in Berkeley.B) Berkeley residents are quite contented with their surroundings.