单选题 {{B}}Passage TwoQuestions 30 to 32 are based on the passage you have just heard.{{/B}}

单选题Why does the author suggest that some people are urged to defer in discussions of international research?

单选题A) magnificent C) effective B) efficient D) significant

单选题[此试题无题干]

单选题Questions 26 to 28 are based on the passage you have just heard.

单选题It was ________ that asked Maury for help in oceanography studies.

单选题We may all like to consider ourselves free spirits. But a study of the traces left by 50,000 cellphone users over three months has conclusively proved that the truth is otherwise. "We are all in one way or another boring," says Alhert-László Barabási at the Center for Complex Network Research at Northeastern University in Boston, who co-wrote the study. "Spontaneous individuals are largely absent from the population." Barabási and colleagues used three months' worth of data from a cellphone network to track the cellphone towers each person's phone connected to each hour of the day, revealing their approximate location. They conclude that regardless of whether a person typically remains close to home or roams far and wide, their movements are theoretically predictable as much as 93 per cent of the time. Surprisingly, the cellphone data showed that individuals'movements were more or less as predictable at week ends as on weekdays, suggesting that routine is rooted in human nature rather than being an effect of work patterns. The cellphone records were processed to identify the most visited locations for each user. Then the probability of finding a given user at his or her most visited locations at each hour through the day was calculated. People were to be found in their most visited location for any given hour 70 per cent of the time. Not surprisingly, the figure increased at night, and decreased at lunchtime and in the early evening, when most people were returning home from work. The team analysed the randomness(随意的) of people's traces to show it was theoretically possible to predict the average person's whereabouts as much as 93 per cent of the time. "Say your routine movement is from home to the coffee shop to work: if you are at home and then go to the coffee shop it's easy for me to predict that you are going to work," says co-author Nicholas Blumm. This predictability was not much affected by differences in age, gender, language spoken or whether a person lived in a rural or urban setting.

单选题Questions 22 to 25 are based on the conversation you have just heard.

单选题Good Faith Medical Center is advertising for registered nurses because________.

单选题A.Theyareawasteoftime.B.Theyaretooexpensive.　　C.Theyaregreatfun.D.Theyareworthwhile.

单选题Fancy a three-day weekend--not just once in a while but week in week out? You may think your bosses would never agree to it, but the evidence suggests that employers, employees and the environment all benefit. The four-day week comes in two flavors. One option is to switch from five 8-hour days to four 10-hour days, meaning overall hours and salaries stay the same. Two years ago, the state of Utah moved all of its employees, apart from the emergency services, to working 4/10, as it has become known. The hope was that by shutting down buildings for an extra day each week, energy bills would be cut by up to a fifth. The full results of this experiment won"t be published until October, but an ongoing survey of 100 buildings suggests energy consumption has fallen by around 13 percent. The survey also found that 70 percent of employees prefer the 4/10 arrangement, and that people took fewer days off sick. The second form of the four-day week is to work the same number of hours per day for four days only, with a 20 percent pay cut. With the recession hitting revenues, accountancy company KPMG announced in February that it was offering its 11,000 UK employees the option of a four-day week to avoid job losses. So far 85 percent of employees have applied to join the scheme, and 800 now do a four-day week. Not everyone will like the idea of working longer days or taking a pay cut in exchange for a 3-day weekend, but it appears most do. According to Rex Facer at Brigham Young University in Provo, Utah, it was the crash of 1929 that led to the five-day week. During the next big financial crisis in the 1970s, there was much talk of moving to a four-day week, but for a variety of reasons that didn"t pan out. "Things are different now," says Facer. "I wouldn"t be surprised if we could get 50 percent or more of the workforce working four-day weeks in the next few years."

单选题[此试题无题干]

单选题Questions 19 to 22 are based on the conversation you have just heard.

单选题Declining mental function is often seen as a problem of old age, but certain aspects of brain function actually begin their decline in young adulthood, a new study suggests. The study, which followed more than 2,000 healthy adults between the ages of 18 and 60, found that certain mental functions—including measures of abstract reasoning, mental speed and puzzle-solving— started to dull as early as age 27. Dips in memory, meanwhile, generally became apparent around age 37. On the other hand, indicators of a person"s accumulated knowledge—like performance on tests of vocabulary and general knowledge—kept improving with age, according to findings published in the journal Neurobiology of Aging . The results do not mean that young adults need to start worrying about their memories. Most people"s minds function at a high level even in their later years, according to researcher Timothy Salthouse. "These patterns suggest that some types of mental flexibility decrease relatively early in adulthood, but that the amount of knowledge one has, and the effectiveness of integrating it with one"s abilities, may increase throughout all of adulthood if there are no diseases," Salthouse said in a news release. The study included healthy, educated adults who took standard tests of memory, reasoning and perception at the outset and at some point over the next seven years. The tests are designed to detect subtle (细微的) changes in mental function, and involve solving puzzles, recalling words and details from stories, and identifying patterns in collections of letters and symbols. In general, Salthouse and his colleagues found, certain aspects of cognition (认知能力) generally started to decline in the late 20s to 30s. The findings shed light on normal age-related changes in mental function, which could aid in understanding the process of dementia (痴呆), according to the researchers. "By following individuals over time," Salthouse said, "we gain insight in cognition changes, and may possibly discover ways to slow the rate of decline." The researchers are currently analyzing the study participants, health and lifestyle to see which factors might influence age-related cognitive changes.

单选题All the participants in the meeting______ a loud laugh when the lecturer began his speech with a joke.

单选题 Passage Two Questions 29 to 31 are based on the passage you have just heard.

单选题[此试题无题干]

单选题Questions 5 to 7 will be based on the following news item.