单选题When replying to this advertisement, please {{U}}enclose{{/U}} a stamped addressed envelope.

单选题He demolished my argument in minutes.

单选题She stood there，{{U}}trembling{{/U}} with fear．

单选题They have given up the hope to save their friend from drowning.

单选题He purchased a ticket and went up on the top deck. A. bought B. took C. showed D. made

单选题The eternal motion of the stars fascinated him.

单选题The economy continued to exhibit signs of decline in September.

单选题Students working toward a degree in business are likely candidates for careers in the banking industry. A. lively B. friendly C. promising D. sophisticated

单选题He left the building before smoke was spotted coming up the stairs.A. droppedB. searchedC. seenD. led

单选题Mr．Henley hasU accelerated/U his sale of shares over the past year．

单选题 {{B}} Diet, Alcohol Linked to Nearly One Third of Cancers{{/B}} Diet is second only to tobacco as a leading{{U}} (51) {{/U}}of cancer and, along with alcohol, is responsible for nearly one third of cases of the disease{{U}} (52) {{/U}}developed countries, a leading researcher said on Tuesday. Dr. Tim Kev, of the University of Oxford, told a cancer conference that scientists are still discovering how certain foods contribute to{{U}} (53) {{/U}}, but they know that diet, alcohol and obesity (肥胖){{U}}　(54) {{/U}}a major role. "Five percent of cancers could be avoided{{U}} (55) {{/U}}nobody was obese(肥胖的)," he said. While tobacco is linked to about 30{{U}} (56) {{/U}}of cancer cases, diet is involved in all estimated 25 percent and alcohol{{U}} (57) {{/U}}about six percent. Obesity raises the{{U}} (58) {{/U}}of breast(乳腺), womb(子宫), bowel and kidney cancer, while alcohol is known to cause cancers of the mouth, throat and liver. Its dangerous impact is{{U}} (59) {{/U}}when combined with smoking. Kev told the meeting of the charity Cancer Research UK{{U}} (60) {{/U}}other elements of diet linked to cancer are{{U}} (61) {{/U}}unknown but scientists are hoping that the EPIC study, which is comparing the diets of 500,000 people in 10 countries and their risk of cancer, will provide some{{U}} (62) {{/U}}. Early results of the study have revealed that Norway, Sweden and Denmark have the{{U}} (63) {{/U}}consumption of fruit and vegetables among European countries while Italy and Spain have the highest. Eating at{{U}} (64) {{/U}}five portions of fruit and vegetables a day is recommended to reduce the risk of cancer. Key, principal scientist on the EPIC study, said it　is looking at dietary links to some of the most common cancers{{U}} (65) {{/U}}colorectal, breast and prostate.

单选题The army launched several air raids yesterday morning.

单选题It's most important to wash your hands frequently and well - 20 seconds with soap and water -and avoid touching your eyes and nose. Alcohol - based hand gels are also effective. Second, to avoid spreading germs, cover your mouth when you cough or sneeze, preferably using your sleeve or a tissue. And third, if you're sick or your child is sick, stay home until the fever has gone away for at least 24 hours without the use of fever - reducing medication. People can avoid spreading germs byA. washing hands frequently and well.B. covering mouth when they cough or sneeze.C. staying away from the population.D. avoid touching eyes and nose after hand washin

单选题Car Thieves Could Be Stopped Remotely (遥远地) Speeding off (超速行驶) in a stolen car, the thief thinks he has got a great catch. But he is in a nasty surprise. The car is fitted with a remote immobilizer (使车辆不能调动的装置), and a radio signal from a control center miles away will ensure that once the thief switches the engine 1 , he will not be able to start it again. For now, such devices 2 only available for fleets of trucks and specialist vehicles used on construction sites. But remote immobilization (使车辆不能调动) technology could soon start to trickle (慢慢地移动) down to ordinary cars, and 3 be available to ordinary cars in the UK 4 two months. The idea goes like this. A control box fitted to the car incorporates 5 miniature cellphone (移动电话，手机), a microprocessor and memory, and a GPS satellite positioning receiver. 6 the car is stolen, a coded cellphone signal will tell the unit to block the vehicle"s engine management system and prevent the engine 7 restarted. There are even plans for immobilizers 8 shut down vehicles on the move, though there are fears over the safety implications of such a system. In the UK, an array of technical fixes is already making 9 harder for car thieves. "The pattern of vehicles crime has changed," says Martyn Randall of Thatcham, a security research organization based in Berkshire that is funded in part 10 the motor insurance industry. He says it would only take him a few minutes to 11 a novice (新手，初学者) how to steal a car using a bare minimum of tools. But only if the car is more than 10 years old. Modern cars are a far tougher (艰苦的) proposition (任务), as their engine management computer will not 12 them to start unless they receive a unique ID code beamed out by the ignition (点火) key. In the UK, technologies like this 13 achieve a 31 percent drop in vehicle-related crime since 1997. But determined criminals are still managing to find other ways to steal cars. Often by getting hold of the owner"s keys in a burglary (盗窃). In 2000, 12 percent of vehicles stolen in the UK were taken using the owner"s keys double the previous year"s figure. Remote-controlled immobilization system would 14 a major new obstacle in the criminal"s way by making such thefts pointless. A group that includes Thatcham, the police, insurance companies and security technology firms have developed standards for a system that could go on the market sooner than the 15 expects.

单选题What do the majority of the people in the world use for health care?

单选题There are notices to the contrary,a great deal of technical writing is at best awkward and at worst actually unclear.

单选题These paintings are considered by many to be authentic. A. faithful B. royal C. sincere D. genuine

单选题The policeman wrote down all the particulars of the accident.

单选题We can conclude from this passage that ballet

单选题Mary was one of the principal organizers of the Artists' Guild. A. planners B. employees C. actors D. recipients