单选题Differences of Policemen Real policemen hardly recognize any resemblance between their lives and what they see on TV. The first difference is that a policeman's real life revolves round criminal law. He has to know exactly what actions are crimes and what evidence can be used to prove them in court. He has to know nearly as much law as a professional lawyer, and what is more, he has to apply it on his feet, in the dark and rain, running down a street after someone he wants to talk to. Little of his time is spent in chatting, he will spend most of his working life typing millions of words on thousands of forms about hundreds of sad, unimportant people who are guilty of stupid, petty crimes. Most television crime drama is about finding the criminal: as soon as he's arrested, the story is over. In real life, finding criminals is seldom much of a problem. Except in very serious cases like murders and terrorist attacks little effort is spent on searching. Having made an arrest, a detective really starts to work. He has to prove his case in court and to do that he often has to gather a lot of difference evidence. At third big difference between the drama detective and the real one is the unpleasant pressures. first, as members of a police force they always have to behave absolutely in accordance with the law; secondly, as expensive public servants they have to get results. They can hardly ever do both. Most of the time some of them have to break the rules in small ways. If the detective has to deceive the world, the world often deceives him. Hardly anyone he meets tells him the truth. And this separation the detective feels between himself and the rest of the world is deepened by the simple-mindedness—as he sees it—of citizens, social workers, doctors, law-makers, and judges, who, instead of eliminating crime punish the criminals less severely in the hope that this will make them reform. The result, detectives feel, is that nine-tenths of their work is recatching people who should have stayed behind bars. This makes them rather cynical.

单选题It is said the houses along this street will soon be demolished.A. pulled downB. pulled upC. pulled offD. pulied in

单选题The once barren hillsides are now good farmland.

单选题In view of his poor health, the company allows him to retire at 45. A. Because B. As a result of C. In spite of D. Considering

单选题 {{B}}One Good Reason to Let Smallpox Live{{/B}} It's now a fair bet that we will never see the total extinction of the smallpox virus. The idea was to cap the glorious achievement of 1980, when smallpox was eradicated in the wild, by destroying the killer virus in the last two labs that are supposed to have it — one in the US and one in Russia. If smallpox had truly gone from the planet, what point Was there in keeping these reserves? {{U}} (1) {{/U}}reality, of course, it was naive to{{U}} (2) {{/U}}that everyone would let{{U}} (3) {{/U}}of such a potent potential weapon. Undoubtedly several nations still have{{U}} (4) {{/U}}vials.{{U}} (5) {{/U}}the last "official" stocks of live virus bred mistrust of the US and Russia,{{U}} (6) {{/U}}no obvious gain. Now American researchers have{{U}} (7) {{/U}}an animal model of the human disease, opening the{{U}} (8) {{/U}}for tests on new treatments and vaccines. So once again there's a good reason to{{U}} (9) {{/U}}the virus — just in{{U}} (10) {{/U}}the disease puts in a reappearance. How do we{{U}} (11) {{/U}}with the mistrust of the US and Russia?{{U}} (12) {{/U}}. Keep the virus{{U}} (13) {{/U}}international auspices in a well-guarded UN laboratory that's open to all countries. The US will object, of course, just as it rejects a multilateral approach to just about everything. But it doesn't{{U}} (14) {{/U}}the idea is wrong. If the virus{{U}} (15) {{/U}}useful, then let's make it the servant of all humanity — not just a part of it. smallpox n. 天花 vial n. 小瓶 auspices n. 赞助；支持 cap vt. 结束；覆盖 potent adj. 有效力的；强有力的 mistrust n. 不信任，怀疑

单选题Why So Risky in Chemical Factories Which is safer—staying at home, traveling to work on public transport, or working in the office? Surprisingly, each of these carries the same risk, which is very low. However, what about flying compared to working in the chemical industry? Unfortunately, the former is 65 times riskier than the latter! In fact, the accident rate of workers in the chemical industry is less than that of almost any of human activity, and almost as safe as staying at home. The trouble with the chemical industry is that when things go wrong they often cause death to those living nearby. It is this which makes chemical accidents so newsworthy. Fortunately, they are extremely rare. The most famous ones happened at Texas City (1947), Flixborough (1974), Seveso (1976), Pemex (1984) and Bhopal (1984). Some of these are always in the minds of the people even though the loss of life was small. No one died at Seveso, and only 28 workers at Flixborough. The worst accident of all was Bhopal, where up to 3,000 were killed. The Texas City explosion of fertilizer killed 552. The Pemex fire at a storage plant for natural gas in the suburbs of Mexico City took 542 lives, just a month before the unfortunate event at Bhopal. Some experts have discussed these accidents and used each accident to illustrate a particular danger. Thus the Texas City explosion was caused by tons of ammonium nitrate (硝酸铵), which is safe unless stored in great quantity. The Flixborough fireball was the fault of management, which took risks to keep production going during essential repairs. The Seveso accident shows what happens if the local authorities lack knowledge of the danger on their doorstep. When the poisonous gas drifted over the town, local leaders were incapable of taking effective action. The Pemex fire was made worse by an overloaded site in an overcrowded suburb. The fire set off a chain reaction of exploding storage tanks. Yet, by a miracle, the two largest tanks did not explode. Had these caught fire, then 3,000 strong rescue team and fire fighters would all have died.

单选题The scientist and agricultural innovator George Washington Carver aided the economy of the South by developing hundreds of commercial uses for crops such as the peanut.

单选题My relationship with the actors is {{U}}fundamental{{/U}} to my work as a director.

单选题Most sound vibrations arrive at the eardrum by way of the auditory canal.

单选题All dogs are capable of doing harm to human beings. A. damage B. injury C. danger D. wound

单选题I have no alternative but to report him to the local police.

单选题The view from my bedroom window was absolutely spectacular.A. generalB. traditionalC. strongD. magnificent

单选题While they were away on vacation, they allowed their mail to {{U}}accumulate{{/U}} at the post office.

单选题The child"s abnormal behavior puzzled the doctor.

单选题Snow Ranger The two things—snow and mountains—which are needed for a ski area are the two things that cause avalanches, large mass of snow and ice crushing down the side of a mountain—often called White Death. It was the threat of the avalanche and its record as a killer of man in the western mountains that created the snow ranger. He first started on avalanche control work in the winter of 1937—1938 at Aha, Utah, in Wasatch National Forest. This mountain valley was becoming well known to skiers. It was dangerous. In fact, more than 120 persons had lost their lives in 1936 and another 200 died in 1937 as a result of avalanches before it became a major ski area. Thus, development of Aha and other major ski resorts in the west was dependent upon controlling the avalanche. The Forest Service set out to do it, and did, with its corps of snow rangers. It takes many things to make a snow ranger. The snow ranger must be in excellent physical condition. He must be a good skier and a skilled mountain climber. He should have at least a high school education, and the more college courses in geology, physics, and related fields he has, the better. He studies snow, terrain, wind and weather. He learns the conditions that produce avalanches. He learns to forecast avalanches and to bring them roaring on down the mountainsides to reduce their killing strength. The snow ranger learns to do this by using artillery, by blasting with TNT, and by the difficult and skillful art of skiing avalanches down. The snow ranger, dressed in a green parka which has a bright yellow shoulder patch, means safety for people on ski slopes. He pulls the trigger on a 75 mm. Recoilless rifle, skis waist deep in powder testing snow stability, or talks with the ski area's operator as he goes about his work to protect the public from the hazards of deep snow on steep mountain slopes.

单选题He began his talk by giving a {{U}}concise{{/U}} definition of post-modernism. A. long and detailed B. short and clear C. comprehensive D. professional

单选题The river widens considerably as it begins to turn east.

单选题I expect that she will be able to {{U}}cater{{/U}} for your particular needs. A. supply B. reach C. provide D. meet

单选题The change in that village was miraculous .

单选题We had trouble finding a pure water supply