单选题This crop has similar qualities to the previous one, ______ both wind-resistant and adapted to the same type of soil. A. been B. to be C. being D. having been

单选题The main boyhood (interesting) of (psychologist) Jean Piaget (was) the observation of animals (in their) natural habitat(栖息地).A. interestingB. psychologistC. wasD. in their

单选题(After) the (development) (of) the steam engine by James Watt in the late 1700s, the Industrial Revolution progressed (forward) rapidly.

单选题Why are some scientists interested in studying senescence?

单选题Many people believe the glare from snow causes snow blindness. Yet, dark glasses or not they find themselves suffering from headaches and watering eyes, and even snowblindness, when exposed to several hours of "snow light". The United States Army has now determined that the glare from snow does not cause snow-blindness in troops in a snow-covered country. Rather, a man's eyes frequently find nothing to focus on in a broad expanse of a snow-covered area. So his gaze continually shifts and jumps back and forth over the entire landscape in search of something to look at. Finding nothing, hour after hour, the eyes never stop searching and the eyeballs become sore and the eye muscle aches. Nature balances this annoyance by producing more and more liquid which covers the eyeballs. The liquid covers the eyeballs in increasing quantity until vision blurs. And the result is total, even though temporary, snowblindness. Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of a main body of troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow-covered landscape. Even the scouts themselves throw lightweight, dark-colored objects ahead on which they too can focus. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop searching through the snow-blanketed landscape. By focusing their attention on one object at a time, the man can cross the snow without becoming hopelessly snowblind or lost. In this way the problem of crossing a solid white area is overcome.

单选题The atmosphere is as much a part of the earth as ______ its soils and the water of its lakes, rivers and oceans. A. are B. is C. do D. has

单选题A: Where is Tom this morning? B: He's got a cold. A: ______.

单选题Mr. Woods: I'd like a double room for tonight.Clerk: ______.Mr. Woods: Yes. I called you last week from New York. My name is George Woods.

单选题{{B}}Text 3{{/B}} Names have gained increasing importance in the competitive world of higher education. As colleges strive for market share, they are looking for names that project the image they want or reflect the changes they hope to make. Trenton State College, for example, became the College of New Jersey nine years ago when it began raising admissions standards and appealing to students from throughout the state. "All I hear in higher education is, ' Brand, brand, brand, ' " said Tim Westerbeck, who specializes in branding and is managing director of Lipman Hearne, a marketing firm based in Chicago that works with universities and other nonprofit organizations. "There has been a sea change over the last 10 years. Marketing used to be almost a dirty word in higher education. " Not all efforts at name changes are successful, of course. In 1997, the New School for Social Research became New School University to reflect its growth into a collection of eight colleges, offering a list of majors that includes psychology, music, urban studies and management. But New Yorkers continued to call it the New School. Now, after spending an undisclosed sum on an online survey and a marketing consultant's creation of "naming structures," "brand architecture" and "identity systems," the university has come up with a new name. the New School. Beginning Monday, it will adopt new logos(标识) , banners, business cards and even new names for the individual colleges, all to include the words "the New School. " Changes in names generally reveal significant shifts in how a college wants to be perceived. In altering its name from Cal State, Hayward, to Cal State, East Bay, the university hoped to project its expanding role in two mostly suburban counties east of San Francisco. The University of Southern Colorado, a state institution, became Colorado State University at Pueblo two years ago, hoping to highlight many internal changes, including offering more graduate programs and setting higher admissions standards. Beaver College turned itself into Arcadia University in 2001 for several reasons : to break the connection with its past as a women's college, to promote its growth into a full-fledged(完全成熟的) university and, officials acknowledged, to eliminate some jokes about the college's old name on late-night television and "morning zoo" radio shows. Many college officials said changing a name and image could produce substantial results. At Arcadia, in addition to the rise in applications, the average student's test score has increased by 60 points, Juli Roebeck, an Arcadia spokeswoman, said.

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}}(31) {{/U}} that in the long run industrialization greatly raised the standard of living for the {{U}}(32) {{/U}} man. But they insisted that its {{U}}(33) {{/U}} results during the period from 1740 to 1840 were widespread poverty and misery for the {{U}}(34) {{/U}} of the English population. {{U}}(35) {{/U}} contrast, they saw in the preceding hundred years from 1640 to 1740, when England was still a {{U}}(36) {{/U}} agricultural country, a period of great abundance and prosperity. This view, {{U}}(37) {{/U}} is generally thought to be wrong. Specialists {{U}}(38) {{/U}} history and economics, have {{U}}(39) {{/U}} two things: that the period from 1640 to 1740 was {{U}}(40) {{/U}} by great poverty, and that industrialization certainly did not worsen and may have actually improved the conditions for the majority of the populace.

单选题Wouldn't you rather your child ______ to bed early? A. go B. went C. would go D. goes

单选题Compared with the new teachers, ______.

单选题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Children would play with fire until their hands were burnt away if______.

单选题 In order to work here the foreigner needs a work permit, which must be{{U}} (31) {{/U}}for by his prospective employer. The problem here is that the Department of Employment has the right to{{U}} (32) {{/U}}or refuse these permits, and there is little that can be{{U}} (33) {{/U}}about it, it would be extremely unwise{{U}} (34) {{/U}}a foreign visitor to work without a permit, since anyone doing so is{{U}} (35) {{/U}}to immediate deportation. There are some{{U}} (36) {{/U}}to this rule, most notably people from the Common Market countries, who are{{U}} (37) {{/U}}to work without permits and who are often given{{U}} (38) {{/U}}residence permits of up to five years. Some{{U}} (39) {{/U}}people, such as doctors, foreign journalists, authors and others, can work without{{U}} (40) {{/U}}. The problem with the Act is not just that some of its rules are unfair but the way it is administered, and the people who administer it.

单选题The customs officer _____ him open his three suitcases.

单选题The single room offered in section A would be suitable for a student ______.

单选题John Smith, being a diligent student, never refuses to ______ more responsibilities that are assigned to him. A. take up B. take in C. take off D. take on

单选题Most people may drink only two liters of water a day, but they consume about 3000 if the water that goes into their food is taken into account. The rich gulp down far more, since they tend to eat more meat, which takes far more water to produce than grains. So as the world's population grows and incomes rise, farmers will need a great deal more water to keep everyone fed: 2000 more cubic kilometers a year by 2030, according to the International Water Management Institute (IWMI). Yet in many farming regions, water is scarce and likely to get scarcer as global warming worsens. The world is facing not so much a food crisis as a water crisis, argues Colin Chartres, IWMI's director-general. The solution, Mr. Chartres and others contend, is more efficient use of water or, as the sloganeers put it, " more crop per drop". Some 1.2 billion people live in places that are short of water. Farming accounts for roughly 70% of human water consumption. So when water starts to run out, farming tends to offer the best potential for thrift. But governments rarely charge farmers a market price for water. So they are usually more wasteful than other consumers—even though the value they create from the water is often less than households or industry would be willing to pay for it. The pressing need is to make water go further. Antoine Frérot, the head of the water division of Veolia Environment, promotes recycling of city wastewater to be used in industry or agriculture. This costs less and cuts pollution. Yet as Mr. Fr6rot himself concedes, there are many even cheaper ways to save water. As much as 70% of water used by farmers never gets to crops, perhaps lost through leaky irrigation channels or by draining into rivers or groundwater. Investment in drip irrigation, or simply repairing the worst leaks, could bring huge savings. Farmers in poor countries can usually afford such things only if they are growing cash crops, says David Molden of IWMI. Even basic kit such as small rainwater tanks can be lacking. Ethiopia, for example, has only 38 cubic meters of storage capacity per inhabitant, compared to almost 5000 in Australia. Yet modest water storage can hugely improve yields in rain-fed agriculture, by smoothing over short dry spells. Likewise, pumping water into natural aquifers for seasonal storage tends to be much cheaper than building a big dam, and prevents the great waste of water through evaporation. Agronomists are beginning to devise tools to help monitor the efficiency of water use. Some have designed algorithms that use satellite data on surface temperatures to calculate the rate at which plants are absorbing and transpiring water. That allows governments and development agencies to concentrate their efforts on the most prodigal areas. Raising yields does not always involve greater water consumption, especially when farms are inefficient. It would take little extra water to double cereal output in many parts of Africa, Mr. Molden argues. IWMI reckons that some three-quarters of the extra food the world needs could be provided simply by bringing yields in poor countries closer to those of rich ones. That is more realistic than the absolute alternative: giving up meat and other thirsty Products altogether. [A] cultivating cash crops [B] leaking irrigation system [C] expenses and efficiency [D] surface temperature data [E] low water price [F] water shortage [G] food crisis

单选题Bill: Hello. I don't think we've met. My name is Bill, Bill Collins. Everybody calls me Bill. May: ______ A. Right. Nobody has introduced us. B. Can I call you Bill, too? C. Hi, Bill. I'm May. D. How are you, Bill?