单选题It's high time that the girl ______ sent to school. A. were B. was C. be D. is to be

单选题Bill’s chance of winning is ______ .

单选题He set the engine of the car ______. A. going B. go C. to going D. on going

单选题It was recommended that we ______ for the authorities. A. waited B. wait C. most wait D. would wait

单选题The brave soldier would ______ yield to such an enemy. A. as sooner die as B. sooner die than C. as sooner die than D. soon die as much

单选题He ______ in a small workshop, but now he is president of a big business company. A. used to working B. was used to work C. used to work D. was used to working

单选题San Francisco is usually cool in summer, but Los Angeles ______. A. is rarely B. is scarcely C. hardly is D. rarely is

单选题{{B}}Text 4{{/B}} Convenience food helps companies by creating growth; but what is its effect on people? For people who think cooking was the foundation of civilisation, the microwave is the last enemy. The communion(共享) of eating together is easily broken by a device that liberates household citizens from waiting for mealtimes. The first great revolution in the history of food is in danger of being undone. The companionship of the campfire, cooking pot and common table, which have helped to bond humans in collaborative living for at least 150,000 years, could be destroyed. Meals have certainly suffered from the rise of convenience food. The only meals regularly taken together in Britain these days are at the weekend, among rich families struggling to retain something of the old symbol of togetherness. Indeed, the day's first meal has all but disappeared. In the 20th century the leisure British breakfast was undermined by the cornflake; in the 21st breakfast is vanishing altogether, a victim of the quick cup of coffee in Starbucks and the cereal bar. Convenience food has also made people forget how to cook. One of the apparent paradoxes of modern food is that, while the amount of time spent cooking meals has fallen from 60 minutes a day in 1980 to 13 minutes a day in 2002, the number of books and television program mes on cooking has multiplied. But perhaps this isn't a paradox. Maybe it is because people can't cook any more, so they need to be told how to do it. Or maybe it is because people buy books about hobbies—golf, yachting—not about chores. Cooking has ceased to be a chore and has become a hobby. Although everybody lives in the kitchen, its facilities are increasingly for display rather than for use. Mr. Silverstein's new book, "Trading Up", looks at mid-range consumers' willingness to splash out. He says that industrial-style Viking cooktpos, with nearly twice the heat output of other ranges, have helped to push the "kitchen as theatre" trend in home goods. They cost from $1,000 to $9,000. Some 75% of them are never used. Convenience also has an impact on the healthiness, or otherwise, of food. Of course, there is nothing bad about ready-to-eat food itself. You don't get much healthier than an apple, and all supermarkets sell a better-for-you range of ready-meals. But there is a limit to the number of apples people want to eat; and these days it is easier for people to eat the kind of food that makes them fat. The three Harvard economists in their paper “ Why have Americans become more obese?” point out that, in the past, if people wanted to eat fatty hot food, they had to cook it. That took time and energy—a good chip needs frying twice, once to cook the potato and once to get it crispy(脆)—which discouraged consumption of that sort of food. Mass preparation of food took away that constraint. Nobody has to cut and double—cook their own fries these days. Who has the time?

单选题{{B}}Passage Two{{/B}} Gene therapy and gene-based drugs are two ways we could benefit from our growing mastery of genetic science. But there will be others as well. Here is one of the remarkable therapies on the cutting edge of genetic research that could make their way into mainstream medicine in the coming years. While it's true that just about every cell in the body has the instructions to make a complete human, most of those instructions are inactivated, and with good reason: the last thing you want for your brain cells is to start churning out stomach acid or your nose to turn into a kidney. The only time cells truly have the potential to turn into any and all body parts is very early in a pregnancy, when so-called stem cells haven't begun to specialize. Yet this untapped potential could be a terrific boon to medicine. Most diseases involve the death of healthy cells--brain cells in Alzheimer's, cardiac cells in heart disease, pancreatic cells in diabetes, to name a few. If doctors could isolate stem cells, then direct their growth, they might be able to furnish patients with healthy replacement tissue. It was incredibly difficult, but last fall scientists at the University of Wisconsin managed to isolate stem cells and get them to grow into neural, gut, muscle and bone cells. The process still can't be controlled, and may have unforeseen limitations. But if efforts to understand and master stem-cell development prove successful, doctors will have a therapeutic tool of incredible power. The same applies to cloning, which is really just the other side of the coin; true cloning, as first shown with the sheep Dolly two years ago, involves taking a developed cell and reactivating the genome within, resetting its developmental instructions to a pristine state. Once that happens, the rejuvenated cell can develop into a full-fledged animal, genetically identical to its parent. For agriculture, in which purely physical characteristics like milk production in a cow or low fat in a hog have real market value, biological carbon copies could become routine within a few years. This past year scientists have done for mice and cows what Ian Wilmot did for Dolly, and other creatures are bound to join the cloned menagerie in the coming year. Human cloning, on the other hand, may be technically feasible but legally and emotionally more difficult. Still, one day it will happen. The ability to reset body cells to a pristine, undeveloped state could give doctors exactly the same advantages they would get from stem cells: the potential to make healthy body tissues of all sorts, and thus to cure disease. That could prove to be a true "miracle cure."

单选题To drive well and ______ within the speed limits necessary in today's traffic. A. staying… are B. to stay… are C. to stay… is D. staying… are

单选题 {{B}}FIVE-DAY WEATHER{{/B}} TODAY TOMORROW SUNDAY MONDAY TUESDAY High 29Low 21 High 28Low 20 High 27Low 19 High 26Low 17 High 24Low 16 Variably cloudy Mainly cloudy withisolated showersending in the afternoon Sunny with cloudyperiods developingin the afternoon Thundershowers(POP80%) Windy with thunder-showers and possiblystorm in the north Sunrise: 6:35 a. m.Sunset: 8:04 p. m. Sunrise: 6:36 a. m.Sunset: 8:02 p. m. Sunrise: 6:38 a. m.Sunset: 8:00 p. m. Sunrise: 6:40 a. m.Sunset: 7:57 p. m. Sunrise: 6:42 a. m.Sunset: 7:55 p. m.

单选题Bob: Why didn't you come to my party last night?Bill: I'm sorry, ______ I had to visit my grandmother at the hospital.

单选题 The German port of Hamburg has been offered MYM 15, 500 to change its name to "Veggieburg" by animal rights activists who are unhappy about the city's association with hamburgers. " Hamburg could improve animal welfare and bring kindness to animals by changing its name to Veggieburg", the People for the Ethical Treatment of Animals (PETA) wrote in a letter sent to Hamburg Mayor Ole von Beust. The German branch of PETA, which has 750, 000 members worldwide, said the organization would give Hamburg's childcare facilities 10, 000 euro's worth of vegetarian burgers if the city changed its name. But city officials in Hamburg, Germany's second largest city which traces its roots to the ninth century, were unmoved. "I cannot afford to waste my time with this. I don't even want to look at nonsense like this," said Klaus May, a city government spokesman. "But that doesn't mean we Hamburgers don't have a sense of humor. " In its letter, PETA said the name Hamburg reminded people of "unhealthy beef patties made of dead cattle". "Millions of people fall ill each year with deadly illnesses like heart disease, cancer, strokes and diabetes from eating hamburgers," PETA said in the letter. The original "hamburger steak", a dish made of ground beef, traveled west with Germans to the United States in the 19th century. The first mention of "hamburgers" appeared on a menu in a New York restaurant in 1834. Some historians trace its beginning to a beef sandwich once popular with sailors in Hamburg. The city's name "Hamburg" comes from the old Saxon words "ham" (bay) and "burg" (castle). PETA recently made a similar offer to the U. S. town of Hamburg, New York. But their MYM 15, 000 bid was refused.

单选题Only a decade ago it had no modern industry worth speaking of.

单选题{{B}}21-25{{/B}} Even plants can run a fever, especially when they're under attack by insects or disease. But unlike humans, plants can have their temperature taken from 3,000 feet away--straight up. A decade ago, adapting the infrared scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide (杀虫剂) spraying rather than rain poison on a whole field, which invariably includes plants that don't have pest (害虫) problems. Even better, Paley's Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running "fevers". Farmers could then spot-spray, using 40 to 70 percent less pesticide than they otherwise would. The bad news is that Paley's company closed down in 1984, after only three years. Farmers resisted the new technology and long-term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. "This technique can be used on 75 percent of agricultural land in the United States, "says George Oerther of Texas A&M. Ray Jackson, who recently retired from the Department of Agriculture, thinks? remote infrared crop scanning could be adopted by the end of the decade. But only if Paley finds the financial backing which he failed to obtain 10 years ago.

单选题I at last came to the realization that the problem could not be solved by the Umeans/U I had been using.

单选题There was no point ______ out until the storm had really stopped. A. in going B. by going C. of going D. to go

单选题Believe it or not, optical illusion (错觉) can cut highway crashes. Japan is a case in point. It has reduced automobile crashes on some roads by nearly 75 percent using a simple optical illusion. Bent stripes, called chevrons (人字形), painted on the roads make drivers think that they are driving faster than they really are, and thus drivers slow down. Now the American Automobile Association Foundation for Traffic Safety in Washington D.C. is planning to repeat Japan"s success. Starting next year, the foundation will paint chevrons and other patterns of stripes on selected roads around the country to test how well the patterns reduce highway crashes. Excessive speed plays a major role in as much as one fifth of all fatal traffic accidents, according to the foundation. To help reduce those accidents, the foundation will conduct its tests in areas where speed-related hazards are the greatest—curves, exit slopes, traffic circles, and bridges. Some studies suggest that straight, horizontal bars painted across roads can initially cut the average speed of drivers in half. However, traffic often returns to full speed within months as drivers become used to seeing the painted bars. Chevrons, scientists say, not only give drivers the impression that they are driving faster than they really are but also make a lane appear to be narrower. The result is a longer lasting reduction in highway speed and the number of traffic accidents. (227 words)

单选题The conservation mentioned in the passage includes the following EXCEPT ______.

单选题Directions: For each blank in the following passage, choose the best answer from the choices given below. Mark your answer on the Answer Sheet by drawing with a pencil a short bar across the corresponding letter in the brackets. Until recently most historians spoke very critically of the Industrial Revolution. They {{U}} {{U}} 1 {{/U}} {{/U}}that in the long run industrialization greatly raised the standard of living for the {{U}} {{U}} 2 {{/U}} {{/U}}man. But they insisted that its {{U}} {{U}} 3 {{/U}} {{/U}}results during the period from 1740 to 1840 were widespread poverty and misery for the {{U}} {{U}} 4 {{/U}} {{/U}}of the English population. {{U}} {{U}} 5 {{/U}} {{/U}}contrast, they saw in the preceding hundred years from 1640 to 1740, when England was still a {{U}} {{U}} 6 {{/U}} {{/U}}agricultural country, a period of great abundance and prosperity. This view, {{U}} {{U}} 7 {{/U}} {{/U}}, s generally thought to be wrong. Specialists {{U}} {{U}} 8 {{/U}} {{/U}}history and economics, have {{U}} {{U}} 9 {{/U}} {{/U}}two things: that the period from 1640 to 1740 was {{U}} {{U}} 10 {{/U}} {{/U}}by great poverty, and that industrialization certainly did not worsen and may have actually improved the conditions for the majority of the populace.