单选题Woman: You are too careful. I can hardly put up with a car moving at this speed. Man: Once bitten twice shy. I was involved in a head-on collision a few months ago. I don"t want to repeat it. Question: What can we learn from the conversation?

单选题If a cat comes too close to its nest, the mockingbird initiates a set of actions to protect its offspring.

单选题In 1999 when MiShel and Carl Meissner decided to have children, they tackled the next big issue: Should they try to have a girl? It was no small matter. MiShel"s brother had become blind from a hereditary condition in his early 20s, and the Meissners had learned that the condition is a disorder passed from mothers to sons. If they had a boy, he would have a 50 per cent chance of having the condition. A girl would be unaffected. The British couple"s inquiries about sex selection led them to Virginia, US, where a new sperm-separation technique, called MicroSort, was experimental at the time. When MiShel became pregnant she gave birth to a daughter. Now they will try to have a second daughter using the same technique. The technique separates sperm into two groups—those that carry the X-chromosome (染色体) producing a female baby and those that carry the Y-chromosome producing a male baby. The technology was developed in 1990s, but the opening of a laboratory in January 2003 in California marked the company"s first expansion. "We believe the number of people who want this technology is greater than those who have access to it," said Keith L. Blauer, the company"s clinical director. This is not only a seemingly effective way to select a child"s gender. It also brings a host of ethical (伦理的) and practical considerations—especially for the majority of families who use the technique for nonmedical reasons. The clinic offers sex selection for two purposes: to help couples avoid passing on a sex-linked genetic disease and to allow those who already have a child to "balance" their family by having a baby of the opposite sex. Blauer said the company has had an impressive success rate: 91 per cent of the women who become pregnant after sorting for a girl are successful, while 76 per cent who sort for a boy and get pregnant are successful. The technique separates sperm based on the fact that the X chromosome is larger than the Y chromosome. A machine is used to distinguish the size differences and sort the sperm accordingly.

单选题Growing economic problems were highlighted by a slowdown in oil output.

单选题A. How are you doing? B: ______

单选题Faith in medicine runs deep in America. We spend more per person on health care than any other nation. Whether we eat too much or exercise too little, whether we"re turning gray or feeling blue, we look to some pill or procedure to make us better. We assume that devoting ever more dollars to medicine will bring us longer, healthier lives. But there is mounting evidence that each new dollar we devote to the current health care system brings small and diminishing returns to public health. Today the United States spends more than $4 500 per person per year on health care. Costa Rica spends less than $ 300. Yet life expectancy at birth is nearly identical in both countries. Despite the highly publicized" longevity revolution," life expectancy among the elderly in the United States is hardly improving. Yes, we are an aging society, but primarily because of falling birthrates. Younger Americans, meanwhile, are far more likely to be disabled than they were 20 years ago. Most affected are people in their thirties, whose disability rates increased by nearly 130 percent, due primarily to overweight. Why has our huge investment in health care left us so unhealthy? Partly it is because so many promised" miracle cures," from Interferon to gene therapies, have proven to be ineffective or even dangerous. Partly it"s because health care dollars are so concentrated on the terminally ill and the very old that even when medical interventions "work,"" the gains to average life expectancy are small. And partly it is because of medical errors and adverse reaction to prescription drugs, which cause more deaths than motor vehicle accidents, breast cancer or AIDS. Each year roughly 200 000 seniors suffer fatal or life-threatening "adverse drug events" due to improper drug use or drug interaction. Why don"t Americans live any longer than Costa Ricans? Overwhelmingly, it"s because of differences in behavior. Americans exercise less, eat more, drive more, smoke more, and lead more socially isolated lives. Even at its best, modern medicine can do little to promote productive aging, because by the time most people come in contact with it their bodies are already compromised by stress, indulgent habits, environmental dangers and injuries.

单选题Excerpt 1: Sales of e-readers surged during the Christmas holiday season, according to a Pew Research Center report, which showed that the number of adults in the United States who owned tablets nearly doubled from mid-December to early January. Excerpt 2: Apple, based in Cupertino, California, controls 73 percent of the market, while Samsung Electronics Co., Sony Corp. and Toshiba Corp, are among companies making constant improvements on tablets Without bringing services that cut into the market share, Sarah Rotman Epps, an analyst at Forrester, said in the report. Excerpt 3: Under Square"s year-long pilot program, an iPad would be installed in the space where Taxi TVs currently sit, and the driver would have an iPhone to process credit-card payments. The technology would allow drivers to accept a passenger"s card at any point during the ride, then enter the amount later. The system charges drivers less in credit card transaction fees than the current rates. Excerpt 4: When Apple introduced the iPad tablet computer in 2010, it was doing what it likes to do best: creating a new category to dominate, as it had done with the iPod and iPhone. By the end of the year, the company had sold nearly 15 million iPads, generating about $9.5 billion in revenue. Just two years later, the chief executive of Apple, Timothy D. Cook, has a prediction: the day will come when tablet devices like the Apple iPad outsell traditional personal computers. Excerpt 5: Apple has made its first attempt to quantify how many American jobs can be credited to the sale of its iPads and other products, a group that includes the Apple engineers who design the devices and the drivers who deliver them-even the people who build the trucks that get them there. On Friday, the company published the results of a study it commissioned saying that it had "created or supported" 514,000 American jobs. The study is an effort to show that Apple"s benefit to the American job market goes far beyond the 47,000 people it directly employs here. Excerpt 6: People who read e-books on tablets like the iPad are realizing that while a book on a black- and-white Kindle is straightforward and immersive, a tablet offers a menu of distractions that can fragment the reading experience, or stop it in its tracks. E-mail lurks tantalizingly within reach. Looking up a tricky word or unknown fact in the book is easily accomplished through a quick Google search. And if a book starts to drag, giving up on it to stream a movie over Netflix or scroll through your Twitter feed is only a few taps away.

单选题Most American magazines and newspapers reserve 60 percent of their pages for ads. The New York Times Sunday edition 1 may contain 350 pages of advertisements. Some radio stations devote 40 minutes of every hour to 2 . Then there is television. According to one estimate, American youngsters sit 3 three hours of television commercials each week. By the time they graduate from high school, they will have been 4 360,000 TV ads. Televisions advertise in airports, hospital waiting rooms, and schools. Major sporting 5 are now major advertising events. Racing cars serve as high speed 6 Some athletes receive most of their money from advertisers. One 7 basketball player earned $ 3.9 million by playing ball. Advertisers paid him nine times that much to 8 their products. There is no escape. Commercial ads are displayed on wails, buses, and trucks. They decorate the inside of taxis and subways—even the doors of public toilets. 9 messages call to us in supermarkets, stores, elevators—and 10 we. are on hold on the telephone. In some countries so much advertising comes through the mail that many recipients proceed directly from the mailbox to the nearest wastebasket to 11 the junk mail. 12 Insider"s Report, published by McCann-Erickson, a global advertising agency, the estimated 13 of money spent on advertising worldwide in 1990 was $275.5 billion. Since then, the figures have 14 to $ 411.6 billion for 1997 and a projected $434.4 billion for 1998. Big money ! What is the effect of all of this? One analyst 15 it this way: "Advertising is one of the most powerful socializing forces in the culture. Ads sell more than products. They sell images, values, goals, concepts of who we are and who we should be. They shape our attitudes and our attitudes shape our behavior. "

单选题They also want the police"s use of force kept in check , especially in poor neighborhoods where everyone is apt to be treated like a suspect.

单选题A: Let"s meet again some time early next week and see what each of us comes up with. B: ______

单选题A: ______ B: No. I"m trying to find a green sweater in extra large.

单选题William Fart"s study and other studies show that ______.

单选题A: Excuse me. What subway station am I in? I got lost. B: ______

问答题Certainly people do not seem less interested in success and what it can do for us now than formerly. Summer homes, European vacations, travel, BMW"s—such items do not seem less in demand than they did a decade or two years ago. What has happened is that people cannot admit their dreams as easily and openly as they once could, lest they be thought of as pushing, acquisitive, and vulgar. For such people and many more perhaps not so outstanding, the proper action seems to be, "Succeed at all costs but refrain from appearing ambitious." The attacks on ambition are many and come from various angles, while its public defenders are few and ineffective. As a result, the support for ambition as a healthy impulse, a quality to be admired and cultivated in the young, is probably lower than it has ever been in the United States.

问答题Directions: In this part, please write an essay of about 150 words on the topic China in the 21st Century and Her Returning Scholars. You should base your essay on the following outline: 1. Today, many countrymen are returning after they finish their study abroad. 2. Reasons for their returning. 3. Significance of their returning both to China and to themselves.

问答题Directions: For this part, you are allowed 30 minutes to write a composition on the topic Getting to Know the World Outside the Campus. You should write at least 150 words and you should base your composition on the outline (given in Chinese) below. 1．大学生了解社会的必要性 2．了解社会的途径(大众媒介，社会服务等) 3．我打算怎么做

问答题很多十几岁、二十出头的人就像这样一刻不停地进行着社交活动。他们无时无刻不在通过手机、即时通信和社交网站相互联络。这个人群之庞大，让学校、工作单位和家庭面临着一大堆新问题需要应对。一些人认为，他们可以完成大量工作。另一些人则认为，他们相互之间的关系很淡薄，而面对面的人际交往能力也很弱。

问答题1．你认为大学里课余辅导班是否应该收费2．你为什么这样认为3．如何解决困难生学费的问题

问答题Directions:Studythepictureasfollowing,andwriteanessayofabout150words.Youressaymustbebasedontheinstructionsasfollows:1.Describethepicture2.Interpretitsmeaning3.Predictthefutureofthisphenomenon

问答题For most of human history, the dominant concerns about energy have centered on the benefit side. Inadequacy of energy resources of the technologies for harvesting, converting, and distributing those resources has meant insufficient energy benefits to human beings and hence inconvenience, and constraints on its growth. The 1970"s, then, represented an turning point, Energy was seen to be getting costlier in all respects. It began to be believable that excessive energy costs could pose threats on a par with those of insufficient supply. It also became possible to think that expanding some forms of energy supply could create costs exceeding the benefits. The crucial question at the beginning of the 1990"s is whether the trend that began in the 1970"s will prove to be temporary or permanent. Is the era of cheap energy really over, or will a combination of new resources, new technology and changing geopolitics bring it back? One key determinant of the answer is the staggering scale of energy demand brought forth by 100 years of population growth and industrial demand. Except for the huge pool of oil underlying the Middle East, the cheapest oil and gas are already gone. Even if a few more giant oil fields are discovered, they will make little difference against consumption on today"s scale．Oil and gas will have to come increasingly，for most countries，from deeper in the earth and from imports whose reliability and affordability cannot be guaranteed．