单选题{{B}}Text 3{{/B}} A pair of dice, rolled again and again, will eventually produce two sixes. Similarly, the virus that causes influenza is constantly changing at random and, one day, will mutate in a way that will enable it to infect billions of people, and to kill millions. Many experts now believe a global outbreak of pandemic flu is overdue, and that the next one could be as bad as the one in 1918, which killed somewhere between 25m and 50m peo-pie. Today however, advances in medicine offer real hope that another such outbreak can be contained—if governments start preparing now. New research published this week suggests that a relatively small stockpile of an anti-viral drug—as little as 3m doses—could be enough to limit sharply a flu pandemic if the drugs were deployed quickly to people in the area surrounding the initial outbreak. The drug's manufacturer, Roche, is talking to the World Health Organisation about donating such a stockpile. This is good news. But much more needs to be done, especially with a nasty strain of avian flu spreading in Asia which could mutate into a threat to humans. Since the SARS outbreak in 2003 a few countries have developed plans in preparation for similar episodes. But progress has been shamefully patchy, and there is still far too little international co-ordination. A global stockpile of drugs alone would not be much use without an adequate system of surveillance to identify early cases and a way of delivering treatment quickly. If an out- break occurred in a border region, for example, a swift response would most likely depend on prior agreements between different countries about quarantine and containment. Reaching such agreements is rarely easy, but that makes the task all the more urgent. Rich countries tend to be better prepared than poor ones, but this should be no consolation to them. Flu does not respect borders. It is in everyone's interest to make sure that developing countries, especially in Asia, are also well prepared. Many may bridle at interference from outside. But if richer nation's were willing to donate anti-viral drugs and guarantee a supply of any vaccine that becomes available, poorer nations might be willing to reach agreements over surveillance and preparedness. Simply sorting out a few details now will have lives ( and recriminations) later. Will there be enough ventilators, makes and drugs? Where will people be treated if the hospitals overflow7 Will food be delivered as normal? Too many countries have no answers to these questions.

单选题 The first snowboards were made in the 1960s. However, it was in the late 70s that they became more {{U}} {{U}} 1 {{/U}} {{/U}}. Throughout the 80s, more and more people began taking up the sport, even though snowboards were not allowed on most ski hills. {{U}} {{U}} 2 {{/U}} {{/U}}its earlier problems, snow boarding is now the world's {{U}} {{U}} 3 {{/U}} {{/U}}growing withter sport and most resorts (度假地) welcome snowboards. In 1963, a Grade 8 student named Tom Sims {{U}} {{U}} 4 {{/U}} {{/U}}a ski_board for a school project in New Jersey. Then, in 1966, a man named Sherman Popenn {{U}} {{U}} 5 {{/U}} {{/U}}two skis together for his kids on Christmas day. He called his invention "the Snuffer," which {{U}} {{U}} 6 {{/U}} {{/U}}the words "snow" and "surf". In 1969, Jake Burton Carpenter received a {{U}} {{U}} 7 {{/U}} {{/U}}for Christmas. He soon began designing boards, and today "Burton" is a popular {{U}} {{U}} 8 {{/U}} {{/U}}of snowboard. By the 1980s, snowboarding had become very popular. {{U}} {{U}} 9 {{/U}} {{/U}}, most ski resorts did not allow snowboarding because they thought it was too {{U}} {{U}} 10 {{/U}} {{/U}}. Since many snowboarders were young, many older skiers did not want them on the ski hills. The snowboarders had to go to the backcountry, {{U}} {{U}} 11 {{/U}} {{/U}}patrolled (有巡逻的) resorts. Rejection at the resorts did not {{U}} {{U}} 12 {{/U}} {{/U}}snowbarding from growing in popularity. Eventually, the owners of ski resorts changed their views. They {{U}} {{U}} 13 {{/U}} {{/U}}that they could make more money by allowing snowboarding. One by one, the resorts {{U}} {{U}} 14 {{/U}} {{/U}}to welcome snowboards. Today, many resorts even set {{U}} {{U}} 15 {{/U}} {{/U}}special areas where snowboarders can practice their creative tricks.

单选题Americans are proud of their variety and individuality, yet they love and respect few things more than a uniform, whether it is the (21) of an elevator operator or the uniform of a five-star general. Why are uniforms so (22) in the United States? Among the arguments (23) uniforms, one of which is that in the eyes of most people they look more (24) than civilian clothes. People have become conditioned to expect (25) quality from a man who wears a uniform. The television repairman who wears a uniform (26) to inspire more trust than one who appears in (27) clothes. Uniforms also have many practical benefits. They save on other clothes. They (28) on laundry bills. Uniforms also give (29) to some practical problems. Though they are long lasting, often their initial expense is (30) than the cost of civilian clothes. Some uniforms are also expensive to maintain, requiring professional dry cleaning rather than the home laundering possible with many types of civilian clothes.

单选题A great deal of attention is being paid today to the so-called digital divide—the division of the world into the info (information) rich and the info poor. And that divide does exist today. My wife and I lectured about this looming danger twenty years ago. What was less visible then, however, were the new, positive forces that work against the digital divide. There are reasons to be optimistic. There are technological reasons to hope the digital divide will narrow. As the Internet becomes more and more commercialized, it is in the interest of business to universalize access—after all, the more people online, the more potential customers there are. More and more governments, afraid their countries will be left behind, want to spread Internet access. Within the next decade or two, one to two billion people on the planet will be netted together. As a result, I now believe the digital divide will narrow rather than widen in the years ahead. And that is very good news because the Internet may well be the most powerful tool for combating world poverty that we"ve ever had. Of course, the use of the Interact isn"t the only way to defeat poverty. And the Internet is not the only tool we have. But it has enormous potential. To take advantage of this tool, some impoverished countries will have to get over their outdated anti-colonial prejudices with respect to foreign investment. Countries that still think foreign investment is an invasion of their sovereignty might well study the history of infrastructure (the basic structural foundations of a society) in the United States. When the United States built its industrial infrastructure, it didn"t have the capital to do so. And that is why America"s Second Wave infrastructure—including roads, harbors, highways, ports and so on—were built with foreign investment. The English, the Germans, the Dutch and the French were investing in Britain"s former colony. They financed them. Immigrant Americans built them. Guess who owns them now? The Americans. I believe the same thing would be true in places like Brazil or anywhere else for that matter. The more foreign capital you have helping you build your Third Wave infrastructure, which today is an electronic infrastructure, the better off you"re going to be. That doesn"t mean lying down and becoming fooled, or letting foreign corporations run uncontrolled. But it does mean recognizing how important they can be in building the energy and telecom infrastructures needed to take full advantage of the Internet.

单选题A. thirsty B. threaten C. thunder D. thief

单选题The idea of special bicycle lanes is most favored by ______.

单选题Please let us have more time,______?A. shall weB. will youC. won' t youD. don' t you

单选题She is always ready to help people in trouble because she think it a ______.A. decisionB. chanceC. prideD. pleasure

单选题The word "intriguing" in paragraph 3 refers to ______.

单选题Modern manufacturing has ______ a global river of materials into a stunning array of new products. A. translated B. transformed C. transferred D. transported

单选题At first, the umbrella was used as ______.

单选题The school board listened quietly as John read the demands that his followers ______ for. A. was demonstrating B. demonstrate C. had been demonstrating D. have demonstrated

单选题It's very difficult to______the exact meaning of an idiom in a foreign language. (2013年10月中国科学院考博试题)

单选题According to the author, all the students know that ______. A. it is too dull to attend lectures B. quite a lot of teachers can produce the results students desire C. they must be inspired to learn D. there are great differences among the lecturers as to their quality of teaching

单选题W: I've been working out the gym since January. I was a bit out of shape. M: You look terrific. It seems that your effort has paid off. Q: What does the man imply about the woman? A. She must have paid a lot for the gym. B. She is known to have a terrific figure. C. Her gym exercise has yielded good results. D. The professor's suggestion is constructive.