单选题While serving in the Senate in the early 1970s Barbara Jordan supported legislation to ban discrimination and to deal with environment problems. A. list B. forbid C. handle D. investigate

单选题They postulated a 500-year lifespan for a plastic container.

单选题The economic reform in Japan has been Uaccelerated/U.

单选题What a juicy morsel it is!

单选题Please {{U}}put up{{/U}} your bands if you have any questions

单选题 下面的短文后列出了7个句子，请根据短文的内容对每个句子作出判断；如果该句提的是正确信息，请选择A；如果该句提的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。 Communication with Customers Online Until the late 1940s, when television began finding its way into American homes, companies relied mainly on print and radio to promote their products and services. The advent (出现) of television brought about a revolution in promoting products and services. Between 1949 and 1951 ,advertising on television grew 960 percent. Today the Internet is once again transforming promotion. By going online, companies can communicate instantly and directly with prospective customers. Promotion on the World Wide Web includes advertising, sponsorships and sales promotions like contests and coupons. In 1996, world wide web advertising revenues reached $ 300 million. Effective online marketers do not merely transfer hard-copy ads(平面广告) to cyberspace. Successful sites blend promotional and non-promotional information, indirectly delivering the advertising messages. To encourage visitors to their sites and to create and cultivate customers' loyalty, companies change information frequently and provide many opportunities for interaction. One of the best online promotion web sites is the Ragu Web site. Here visitors can find thirty six pasta recipes, take Italian lessons, and view an Italian film festival. But they will find no traditional ads. So subtle is the mix of product and promotion that visitors hardly know an advertising message has been delivered. SEGA of America, maker of computer games and hardware, uses its Web site for a variety of different promotions, such as introducing new game characters to the public and supplying Web surfers the opportunity to down load games. Sega' s home page averages 250,000 visitors a day. To heighten interest in the site, SEGA bought an advertising banner on Netscape, thereby increasing site visits by 15 percent. Online participants in Quaker Oats' Gatorade promotion received a free T-shirt in exchange for answering a few questions. Quaker Oats reports that the online promotion created product loyalty and helped the company know its customers better. Now, to target specific Internet users, an increasing number of companies are using "push" technology which automatically delivers customized (按客户要求制造的) news and other information to users' computers when they log onto the Internet. Although organizations like Nielsen Media Research are developing technologies to enhance audience measurement and tracking, it remains difficult to assess how many times the same person looks at an ad and who that person is. Although online promotions can be glamorous and sophisticated, they are not perfect. For a well-designed marketing mix, industry experts advise companies to use the Internet as a supplement to other advertising media.

单选题Julia Margaret Cameron was among the pioneers in a new kind of portrait photography— the close-up. A. originators of B. champions in C. experts in D. publishers of

单选题Mad Scientist Stereotype Outdated Do people still imagine a physicist as a bearded man in glasses or has the image of the mad scientist changed? The Institute of Physics set out to find out whether the stereotype of a physics "boffin" (科学家) still exists by conducting a survey on shoppers in London. The people were asked to identify the physicist from a photograph of a line-up of possible suspects. 98 percent of those asked got it wrong. The majority of people picked a white male of around 60, wearing glasses and with a white beard. While this stereotype may have been the image of an average physicist fifty years ago, the reality is now very different. Since 1960 the number of young women entering physics has doubled and the average age of a physicist is now 31. The stereotype of the absent-minded scientist has lasted a long time because the media and Hollywood help promote the image of men in white lab coats with glasses sitting by blackboards full of equations (等式) or working with fizzing (嘶嘶响) test tubes. These stereotypes are really damaging to society. Very good school children are put off studying science because they don't see people like themselves on television or in magazines doing science. They simply don't relate to the media's image of the mad scientist. This is one reason why fewer young people are choosing to do science at university. If we want to encourage more young people to study science subjects, we need to change this image of the scientist and make science careers more attractive. But we must also develop children's interest in science. In an attempt to change this negative image, an increasing number of science festivals are being organized. Thousands of people from secondary schools are also encouraged to take part in nationwide science competitions of which the most popular are the national science Olympiads. Winning national teams then get the opportunity to take part in the International Science Olympiads which are held in a different country every year. These events are all interesting for the young people who take part but they only involve a small proportion of students who are already interested in science. It seems that there is a long way to go before science becomes attractive as subjects like computer studies or fashion and design.

单选题If you had gone over your test paper carefully before handing it in, you would have made fewer mistakes.

单选题Free Statins With Fast Food Could Neutralize Heart Risk Fast food outlets could provide statin drugs free of (51) so that customers can (52) the heart disease dangers of fatty food, researchers at Imperial College London suggest in a new study. Statins reduce the (53) of unhealthy "LDL" cholesterol in the blood. A wealth of trial data has proven them to be highly effective at lowering a person's heart attack risk. In a paper published in the American Journal of Cardiology, Dr Darrel Francis and colleagues calculate (54) the reduction in heart attack risk offered by a statin is (55) to offset the increase in heart attack risk (56) eating a cheeseburger and drinking a milkshake. Dr Francis, from the National Heart and Lung Institute at Imperial College London, (57) is the senior author of the study, said: "Statins don't (58) all of the unhealthy effects of cheeseburgers and French fries. It's (59) to avoid fatty food altogether. But we've worked out that in terms of your possobility of having a heart attack, taking a statin can reduce your risk to more or less the same degree as a fast food meal increases it. " "It's (60) that people are free to take as many unhealthy condiments in fast food outlets as they like, but statins, which are beneficial (61) heart health, have to be prescribed. It makes sense to make risk-reducing statins available just (62) the unhealthy condiments that are (63) free of charge. It would cost less than pence per (64) —not much different to a sachet of sugar, "Dr Francis said. When people engage in risky behaviours like driving or smoking, they're encouraged to (65) measures that lower their risk, like wearing a seatbelt or choosing cigarettes with filters. Taking a statin is a rational way of lowering some of the risks of eating a fatty meal.

单选题阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。 {{B}}New Product Will Save Lives{{/B}} Drinking water that looks clean may still contain bugs(虫子),which can cause illness. A small company called Genera Technologies has produced a testing method in three stages, which shows whether water is safe. The new test shows if water needs chemicals added to it, to destroy anything harmful. It was invented by scientist Dr. Adrian Parton, who started Genera five years ago. He and his employees have developed the test together with a British water company. Andy Headland, Genera’s marketing director, recently presented the test at a conference in the USA and forecast good American sales for it. Genera has already sold 11 of its tests at $ 42,500 a time in the UK and has a further four on order. It expects to sell another 25 tests before the end of March. The company says it is the only test in the UK to be approved by the government. Genera was formed five years ago and until October last year had only five employees; it now employs 14. Mr. Headland believes that the company should make around $19 million by the end of the year in the UK alone.

单选题The secretary is expected to explore ideas for post-war reconstruction of the area.

单选题Lakes, Too, Feel Global Warming There"s no doubt: In the last few decades, the average temperature on Earth has been higher than it has been in hundreds of years. Around the world, people are starting to measure the effects of global warming—and trying to figure out what to do about it. Scientists recently used satellites to study the temperatures of lakes around the world, and they found that lakes are heating up. Between 1985 and 2009, satellites recorded the nighttime temperatures of the surfaces of 167 lakes. During those 24 years, the lakes got warmer—by an average of about 0.045 degree Celsius per year. In some places, lakes have been warming by as much as 0.10 degree Celsius per year. At that rate, a lake may warm by a full degree Celsius in just 10 years. That difference may seem small—you might not even notice it in your bath. But in a lake, slightly warmer temperatures could mean more algae(水藻), and algae can make the lake poisonous(有毒的) to fish. The study shows that in some regions, lakes are warming faster than the air around them. This is important because scientists often use measurements of air temperature to study how Earth is warming. By using lake temperatures as well, scientists can get a better picture of global warming. The scientists say data on lakes give scientists a new way to measure the impact of climate change around the world. That"s going to be useful, since no country is too big or too small to ignore climate change. Scientists aren"t the only ones concerned. Everyone who lives on Earth is going to be affected by the rapid warming of the planet. Many world leaders believe we might be able to do something about it, especially by reducing the amount of greenhouse(温室) gases we put into the air. That"s why the United Nations started the Framework Convention on Climate Change, or UNFCCC. Every year the convention meets, and representatives from countries around the world gather to talk about climate change and discuss global solutions to the challenges of a warming world.

单选题In fine days, you'd better open windows to ventilate the room.A. sweepB. airC. cleanD. wash

单选题The city has decided to do away with all the old buildings in its center. A. get rid of B. set up C. repair D. paint

单选题The union representative put across her argument very effectively.

单选题The report advocated setting up day training colleges. A. supposed B. excited C. Suggested D. discussed

单选题His sole motive was to make her happy. A. aim B. argument C. capability D. pursuit

单选题Some People Do Not Taste Salt Like Others Low-salt foods may be harder for some people to like than others, according to a study by a Penn State College of Agricultural Sciences food scientist. The research indicates that genetic factors influence some of the difference in the levels of salt we like to eat. Those conclusions are important because recent, well-publicized efforts to reduce the salt content in food have left many people struggling to accept fare that simply does not taste as good to them as it does to others, pointed out John Hayes, assistant professor of food science, who was lead investigator on the study. Diets high in salt Can increase the risk of high blood pressure and stroke. That is why public health experts and food companies are working together on ways to help consumers lower salt intake through foods that are enjoyable to eat. This study increases understanding of salt preference and consumption. The research involved 87 carefully screened participants who sampled salty foods such as soup and chips, on multiple occasions, spread out over weeks. Test subjects were 45 men and 42 women, reportedly healthy, ranging in age from 20 to 40 years. The sample was composed of individuals who were not actively modifying their dietary intake and did not smoke cigarettes. They rated the intensity of taste on a commonly used scientific scale, ranging from barely detectable to strongest sensation of any kind. "Most of us like the taste of salt. However, some individuals eat more salt, both because they like the taste of saltiness more, and also because it is needed to block other unpleasant tastes in food," said Hayes. "Supertasters, people who experience tastes more intensely, consume more salt than non-tasters do. Snack foods have saltiness as their primary flavor, and at least for these foods, more is better, so the supertasters seem to like them more." However, supertasters also need higher levels of salt to block unpleasant bitter tastes in foods such as cheese, Hayes noted. "For example, cheese is a wonderful blend of dairy flavors from fermented milk, but also bitter tastes from ripening that are blocked by salt," he said. "A supertaster finds low-salt cheese unpleasant because the bitterness is too pronounced." Hayes cited research done more than 75 years ago by a chemist named Fox and a geneticist named Blakeslee, showing that individuals differ in their ability to taste certain chemicals. As a result, Hayes explained, we know that a wide range in taste acuity exists, and this variation is as normal as variations in eye and hair color. "Some people, called supertasters, describe bitter compounds as being extremely bitter, while others, called non-tasters, find these same bitter compounds to be tasteless or only weakly bitter." he said. "Response to bitter compounds is one of many ways to identify biological differences in food preference because supertasting is not limited to bitterness.

单选题If you are in the street when an earthquake occurs, stay in a large open space