【正文】 a secret”？ A． Modern society has finally developed into an open society. B． People leave traces around when using modern technology. C． There are always people who are curious about others’ affairs. D． Many search engines benefit from giving away people’s identities. 答案 B [細(xì)節(jié)理解題。 ] 42． What would psychologists advise on the relationships between friends? A． Friends should open their hearts to each other. B． Friends should always be faithful to each other. C． There should be a distance even between friends. D． There should be fewer arguments between friends. 答案 C [推理判斷題。 ] B Some day a stranger will read your e mail without your permission or scan the website you’ve visited. Or perhaps someone will casually glance through your credit card purchases or cellphone bills to find out your shopping preferences or calling habits. In fact, it’s likely that some of these things have already happened to you. Who would watch you without your permission? It might be a spouse, a girlfriend, a marketing pany, a boss, a cop or a criminal. Whoever it is, they will see you in a way you never intended to be seen—the 21st century replacement of being caught naked. Psychologists tell us boundaries are healthy, and that it’s important to reveal yourself to friends, family and lovers in stages at appropriate times. But few boundaries remain. The digital bread crumbs(碎屑 )you leave everywhere make it easy for strangers to reconstruct who you are, where you are and what you like. In some cases, a simple Google search can reveal what you think. Like it or not, increasingly we live in a world where you simply cannot keep a secret. The key question is: Does it matter? For many Americans, the answer apparently is “no”. When opinion polls ask Americans about privacy, most say they are concerned about losing it. A survey found a strong bad feeling about privacy, with 60 percent of respondents saying they feel their privacy is “slipping away, and that bothers me.” But people say one thing and do another. Only a tiny part of Americans change any behaviors in an effort to preserve their privacy. Few people turn down a discount at tollbooths(收費(fèi)站 )to avoid using the EZ Pass system that can track automobile movements. And few turn down supermarket loyalty cards. Privacy economist Alessandro Acquisti has run a series of tests that reveal people will give away personal information like Social Security numbers just to get their hands on a pitiful 50 cents off coupon(優(yōu)惠券 ). But privacy does matter—at least sometimes. It’s like health: When you have it, you don’t notice it. Only when it’s gone do you wish you’d done more to protect it. 41． What does the author mean by saying “the 21st century replacement of being caught naked”？ A． People’s personal information is easily accessed without their knowledge. B． In the 21st century people try every means to look into others’ secrets. C． People tend to be more frank with each other in the information age. D． Criminals are easily caught on the spot with advanced technology. 答案 A [細(xì)節(jié)理解題。 ] 40． Which of the following is TRUE according to the passage? A． Ducks on the northern end of a row would keep their eyes facing the south open. B． Ducks with less sense of duty usually choose to stay in the centre of a row. C． Ducks with one eye open at the edge can still enjoy a certain degree of sleep. D． A videotape recorder was the only electronic device used in the experiment. 答案 C [細(xì)節(jié)理解題。 ] 39． How many ducks were used in the experiment? A． Four. B． Eight. C． Twelve. D． Sixteen. 答案 D [細(xì)節(jié)理解題。 ] 38． Ducks at the end of each row sleep with one eye open because ________. A． they are looking for food B． they want to enjoy the scenery C． they are watching out for danger D． they are unique in their sleeping habit 答案 C [細(xì)節(jié)理解題。 ] 37． A predator is most likely to be ________. A． an animal that hunts, kills and eats other animals B． a human being who looks after and feeds ducks C． a scientist who does research work on animals D． an animal that is likely to be friends with ducks 答案 A [詞義猜測題。 A How would you like to sleep with one half your brain asleep and the other half awake? Dolphins sleep this , scientists at Indiana State University have discovered that ducks sleep this way found that ducks sleep half awake so they can rest and watch for danger at the same time. After putting their ducks in a row and videotaping them, some researchers found ducks on the end of each row spent more time asleep with one eye open, apparently looking for predators. “ The more the ducks felt threatened, the more they slept with one eye open， ” said lead author Niels C． Rattenb, a graduate student at Indiana State University, Terre Haute. “ The unique aspect is not that they do it， but that they control it. When they sleep at the edge of a group， they tend to realize greater danger, so they spend more time sleeping with one half of their brain.” Ducks with one eye open were still awake enough to detect predators, said the authors of the study, which appears today in the journal Nature. The researchers studied four groups of four ducks held in plastic boxes， which were arranged in a row. Ducks on the end were found to sleep with one eye open percent of the time, pared to percent of the time for ducks i