单选题. Questions 12 to 15 are based on the conversation you have just heard.5.

单选题[此试题无题干]

单选题. Questions 19 to 21 are based on the passage you have just heard.4.

单选题《复合题被拆开情况》 At school our children are taught to add up and subtract but, extraordinarily, are not shown how to open a bank account—let alone how to manage their finances in an increasingly complex and

单选题. Questions 3 and 4 are based on the news report you have just heard.3.

单选题《复合题被拆开情况》 A growing number of U. S. bike riders are attracted to electric bikes for convenience, health benefits and their fun factor. Although ebikes first appeared in the 90s, cheaper options and l

单选题. Questions 5 to 7 are based on the news report you have just heard.5.

单选题. Educators today are more and more often heard to say that computer literacy is absolutely necessary for college students. Many even argue that each incoming freshman should have permanent access to his or her own microcomputer. What advantages do computers offer the college students? Any student who has used a word processor will know one compelling reason to use a computer: to write papers. Although not all students feel comfortable composing on a word processor, most find revising and editing much easier on it. One can alter, insert, or delete just by pressing a few keys, thus eliminating the need to rewrite or re-type. Furthermore, since the revision process is less burdensome, students are more likely to revise as often as is necessary to end up with the best paper possible. For these reasons, many freshman English courses require the use of a word processor. Computers are also useful in the context of language courses, where they are used to drill students in basic skills. Software programs reinforce ESL (English as a Second Language) instruction, as well as instruction in French, German, Spanish, and other languages. By using these programs on a regular basis, students can improve their proficiency in a language while proceeding at their own pace. Science students take advantage of computers in many ways. Using computer graphic capabilities, for example, botany students can represent and analyze different plant growth patterns. Medical students can learn to interpret computerized images of internal body structures. Physics students can complete complex calculations far more quickly than they could without the use of computer. Similarly, business and accounting students find that computer spreadsheet programs are all but indispensable to many aspects of their work, while students pursuing careers in graphic arts, marketing, and public relations find that knowledge of computer graphic is important. Education majors learn to develop grading systems using computers, while social science students use computers for analyzing and graphically displacing their research results. It is no wonder, then, that educators support the purchase and use of microcomputers by students. A versatile tool, the computer can help students learn. And that is, after all, the reason for going to college.1. The word "literacy" in paragraph 1 means ______.

单选题 In the first year or so of Web business

单选题. It often seems that some possess superhuman eating powers, allowing them to down an entire pizza while remaining rail-thin. Others only need to think of a slice and gain five pounds. Now one doctor says there's evidence that genetics could be behind some of these differences. Regardless of how much you eat, your weight may be out of your hands. Vann Bennett, a biochemist at Duke University and his team led a new investigation and discovered why this happens. They engineered mice to have several common modifications of the gene found in humans. They observed that mice who had mutations of ankyrin-B took more glucose (葡萄糖) into their fat cells, which in turn made more fat. Typically, the cell membrane (膜) acts as a barrier to prevent glucose from entering these cells; the alteration kept the gate open. The change may serve a useful purpose. "Probably this is not always a bad thing," Bennett told Newsweek. "It could help people survive famines in the past. But today we have so much food that it probably is a bad thing." Our modern diets of fast food drive-thru windows and aisles of packaged snacks make the alteration work against us. Dieters have long been told to watch their calories and exercise more, but this new finding suggests that a blanket approach doesn't work for everyone. And the study illustrates a common problem for people: increased weight gain as a function of age. Our metabolism naturally slows with age, making it harder to maintain the weight of our 30-year-old selves when we're 50. Now add an unruly ankyrin-B gene, and it may seem impossible to stay slim. The mice in the study gained more weight when on high-fat diets. Bennett believes this is because once the fat cells received the glucose and start making more fat, they become sensitive to other fat. Despite being studied in mice, the researchers believe further research on this gene, and possibly others, could potentially create a field of customized diets and health plans based on genetics. Bennett envisions such assessments being performed at birth one day. For now, frustrated dieters can take comfort with one saying: It's not you, it's your genes.1. According to a doctor, what makes people different in weight? ______

单选题《复合题被拆开情况》 Brain-training software may be a waste of time. People who played "mind-boosting" games made the same modest cognitive gains as those who spent a similar amount of time surfing the web. "It

单选题. Questions 5 to 7 are based on the news report you have just heard.5.

单选题. Questions 16 to 18 are based on the passage you have just heard.1.

单选题21. Care of the soul is a gradual process ______ even the small details of life should be considered.

单选题. Questions 22 to 25 are based on the passage you have just heard.7.

单选题. Questions 16 to 18 are based on the passage you have just heard.1.

单选题The French government is to ban students from using mobile phones in the countrys primary，junior and middle schools.Children will be allowed to bring their phones to school，but not allowed to get

单选题A Among the boutiques in the canal district of Amsterdam is a shoe shop，called W-21，that has a selection of stylish footwear in the window.A select group of customers were recently invited there to ha