单选题A Police were sent to disperse the crowds but ended up B by shooting down protesters and it was in C this chaos that the seeds of political liberation were D sown .

单选题The current ______ with exam results is actually harming children"s education.

单选题Did you know that the parachute was invented before the airplane? This is (1) but true. The first airplane was flown in 1903. However, Leonardo da Vinci, the Italian artist-scientist, drew sketches of a (2) over 450 years ago. The first successful parachute jump was made from a tower (3) a French scientist, Sebastien Lenormand, in 1783. In 1785 J. P. Blanchard of France used a parachute to eject a dog from a hot-air balloon. People (4) to use parachutes first for thrills and fun. Andre Jacques Garnerin, also of (5) , was the first to drop from a balloon at a (6) of 2000 feet using a parachute. Garnerin continued to parachute for a number of years, as (7) many others. It wasn't until World War I, (8) , that the parachute became important for saving lives. By the end of the war, it had become standard safety equipment for nearly all (9) . In addition, parachutes were also worn by military passengers on (10) . Today the parachute is used (11) several purposes. It is invaluable when firefighters must be dropped at the scene of a fire in (12) areas. These areas are often (13) isolated that they can't be reached by other means. The parachute is also used to drop rescuers and supplies to victims of disasters. It is also used by the military to (14) soldiers and equipment. Parachute jumping has also become a popular (15) . Many airports have schools that teach correct procedure. They also provide the airplanes to carry (16) aloft. Experienced jumpers often take up sky diving. In sky diving the jumpers don't open their parachutes immediately. (17) they fall freely toward the earth doing various tricks, after which they then open their parachutes. They do this just in time for a safe (18) . There are many (19) records in parachuting. The longest fall before opening a parachute for a safe landing was accomplished in 1962 by a Russian who fell over fifteen and one-half miles (20) using the parachute. The highest jump was made by an American in 1960. Air Force Captain Joseph Kittinger, Jr., jumped from a balloon nineteen and one-half miles high.

单选题The appeal of advertising to buying motives can have both negative and positive effects. Consumers may be convinced to buy a product of poor quality or high price because of an advertisement. For example, some advertisers have appealed to people"s desire for better fuel economy for their cars by advertising automotive products that improve gasoline mileage. Some of the products work. Others are worthless and a waste of consumers" money. Sometimes advertising is intentionally misleading. A few years ago a brand of bread was offered to dieters (节食者) with the message that there were fewer calories (热量单位， 卡路里) in every slice. It turned out that the bread was not dietetic (适合于节食的) ， but just regular bread. There were fewer calories because it was sliced very thin, but there were the same number of calories in every loaf. On the positive side, emotional appeals may respond to a consumer"s real concerns. Consider fire insurance. Fire insurance may be sold by appealing to fear of loss. But fear of loss is the real reason for fire insurance. The security of knowing that property is protected by insurance makes the purchase of fire insurance a worthwhile investment for most people. If consumers consider the quality of the insurance plans as well as the message in the ads, they will benefit from the advertising. Each consumer must evaluate her or his own situation. Are the benefits of the product important enough to justify buying it? Advertising is intended to appeal to consumers, but it does not force them to buy the product Consumers still control the final buying decision.(282 words)

单选题A: I'm sorry that I can't go to your party tonight. B: ______? Haven't we agreed on it?

单选题Marie: Your little boy has clone a good job at school. Eva:______.

单选题In the flint decades of the twentieth century, the individual gem could not be seen, but could be worked with {{U}}fruitfully{{/U}}.

单选题The students who ______ tolerated the pain for the longest time.

单选题The government has decided to reduce a(n)______on all imports.

单选题根据下面资料，回答21-35题。In the past， I always thought that being a teacher was an easy job. But I changed my（21）when I became a part-time teacher. About four years ago， Richard asked me（22）I could help teach

单选题This teaching method is a ______ of many methods which have been used for decades in the country. A. symposium B. symphony C. spectrogram D. synthesis

单选题If pride in a good name keeps families and neighborhoods straight, a sense of shame is the ______ side of that coin.

单选题Violent programmes on television may have a bad ______ on children.

单选题We seek a society that has ______ a respect for the dignity and worth of the individual.

单选题Most doctors recognize that medicine is______.

单选题The author mentions that people who live in suburban houses ______.

单选题Skilled technicians and advanced technologies enable us to build uncompromised quality into all our cars, because our first ______is bringing your pleasure for years to come.

单选题The letter page of this newspaper is a ______ for public argument.

单选题Computers _____________ 5% of the country's commercial electricity consumption.