单选题(Collecting) toy cars as a hobby (becomes) (increasingly) popular during the (past) fifty years.

单选题Are you ______ spending more money on the space program?

单选题No country in the world has more daily newspapers than the USA. There are almost 2,000 of them, as compared with 155 in Japan, 164 in Argentina and 111 in Britain. The quality of some American papers is extremely high and their views are quoted all over the world. Distinguished dailies like the Washington Post or the New York Times have a powerful influence all over the country. However, the Post and the Times are not national newspapers in the sense that The Times is in Britain or LeMonde is in France, since each American city has its own daily newspaper. The best of these present detailed accounts of national and international news, but many tend to limit themselves to state or cite news. Like the press in most other countries, American newspapers range from the "sensational", which feature crime, sex and rumor, to the serious, which focus on factual news and the analysis of world events. But with few exceptions American newspapers try to entertain as well as give information, for they have to compete with television. Just as American newspapers give way to all tastes, so do they also try and apply to readers for all political persuasions. A few newspapers support extremist groups on the far right and on the far left, but most daily newspapers attempt to attract middle-of-the-road Americans who are essentially moderate. Many of these papers print columns by well-known journalists of different political and social views, in order to present a balanced picture. As in other democratic countries American newspapers can be either responsible or irresponsible, but it is generally accepted that the American press serves its country well and that it has more than once bravely uncovered political scandals (丑闻) or crimes, for instance, the Watergate Affair. The newspapers drew the attention of the public to the fears of the Vietnam War.

单选题Because of his heavy workload, he seems to be ______ in strength.

单选题They discussed the problem three or four times, but could come to no ______. A. end B. conclusion C. result D. judgment

单选题______, he knew a lot.

单选题_______ a change of weather, please take the coat with you

单选题So much ______ about his ships on the sea that he didn't sleep for a single minute all night. A. did he worry B. he did worry C. he worried D. worried he

单选题As a graduate from high school, Tom is faced with three choices: attending college, finding a job or the army. A. As B. from high school C. is faced with D. or the army

单选题Cathy: Shall I use your dictionary? Sarah: ______

单选题If you had told me earlier, I ______ to meet you at the hotel.

单选题______ fired after a hard work, she fell into bed and went straight to sleep.

单选题Most of-us are used to seasons. Each year, spring follows winter, which follows au-tumn, which follows summer, which follows spring. And winter is colder than summer.But the earth goes through temperature cycles over much longer periods than those that we experience. Between 65,000 and 35,000 years ago, the planet was much colder than it is now. During that time the temperature also changed a lot, with periods of warming and cooling. Ice melted during the warm periods, which made sea levels rise. Water froze again during the cold periods.(77) A new study from Switzerland sheds light on where ice sheets melted during the ice age. It now seems that the ice melted at both ends of the earth, rather than just in ei-ther northern or southern regions.This surprised the researchers from the University of Bern. (78) Scientists have long assumed that most of the ice that melted was in the Northern hemisphere (半球) during the 30,000-year long ice age. That belief was held because the North Pole is surrounded by land, while the South Pole is surrounded by the Antarctic Ocean. It is easier for ice sheets to grow on land. If surrounded by sea the ice can easily just slip into the ocean instead of building up.The researchers used a computer model to look at ways the ice could melt and how it might affect sea levels. They compared these results to evidence of how temperatures and currents actually changed during that time. The model showed that if it was only in the Northern hemisphere that ice melted, there would have been a bigger impact (影响) on ocean currents (洋流) and sea temperatures than what actually happened. Studies suggest that melting just in the Southern hemisphere would have been impossible, too. The only reasonable conclusion, the scientists could make, was that ice melted equally in the North and the South.It is still a mystery as to what caused the temperature changes that caused the ice to melt.

单选题Just as a married man cannot leave his work, a poor man cannot ______ to get sick. A. have B. go C. expect D. afford

单选题He said current interest rates are a direct ______ of domestic (国内的) and inter-national conditions.

单选题He is stupid. ______ , he doesn't study.

单选题The boat will not arrive ______ forty-four hours.

单选题If one does not have respect for himself, ______ can not expect others to respect him. A. one B. you C. they D. we

单选题A bone marrow test, (what) (involves) extracting fluid from the marrow, (maybe) necessary (for diagnosing) leukemi

单选题___ difficulties we may come across, we will help one another to get over them.