单选题There must have been someone who has instigated a rebellion because the people are so well organized. A．incited B．tampered C．intruded D．meddled

单选题The United States Food and Drug Administration has shown itself to be particularly wary with regard to alleged "miracle" drugs in recent times.

单选题Japan remains tied to the Western camp partly because the relationship has become ______ to her economy and politics over forty years' association. A. integral B. unilateral C. rational D. hierarchical

单选题Under proper conditions, sound waves will be {{U}}reflected{{/U}} from the hillside or other such obstruction.

单选题Giving me a place to stand on, the living conditions of the farmers will be greatly improved. A. I will greatly impove the living conditions of the farmers. B. the living conditions of the farmers should be greatly improved. C. the farmers' living conditions will be greatly improved. D. I can certainly improve the farmners' living conditions.

单选题We wish to express our satisfaction at this to the Special Committee, their activities deserve encouraged. A. whose activities will deserve to be encouraged. B. their activities deserve to be encouraged. C. whose activities should deserve being encouraged. D. their activities deserve to be encouraging.

单选题Human beings are superior to animals that they can use language as a tool of communication.

单选题A promising note is a written agreement to pay a certain sum of money at some time future .

单选题Aiming to retrieve the Mars rover Opportunity, engineers are imitating Mars surface conditions in a testing laboratory.

单选题Most people would agree that, although our age far surpasses all previous ages in knowledge, there has been no correlative increase in wisdom. A. improves B. precedes C. exceeds D. imposes

单选题Although Asian countries are generally ______ in social customs than Western countries, there have been several notable examples of women leaders in both China and India.

单选题Home to magnates and gangsters, refugees and artists, the city was, in its ______, a metropolis that exhibited all the hues of the human character.

单选题David is the ______ holder of the world 5,000-meter race world record, hut there is no guarantee that he will win in the Olympic Games. A. prevalent B. dominant C. current D. prominent

单选题The sun today is a yellow dwarf star. It is fueled by thermonuclear reactions near its center that convert hydrogen to helium. The sun has existed in its present state for about 4 billion, 600 million years and is thousands of times larger than the Earth. By studying other stars, astronomers can predict what the rest of the sun"s life will be like. About 5 billion years from now, the core of the sun will shrink and become hotter. The surface temperature will fail. The higher temperature of the center will increase the rate of thermonuclear reactions. The outer regions of the sun will expand approximately 35 million miles, about the distance to mercury, which is the closest planet to the sun. The sun will then be a red giant star. Temperatures on the earth will become too hot for life to exist. Once the sun has used up its thermonuclear energy as a red giant, it will begin to shrink. After it shrinks to the size of the earth, it will become a white dwarf star. The sun may throw off huge amounts of gases in violent eruptions called nova explosions as it changes from a red giant to a white dwarf. After billions of years as a white dwarf, the Sun will have used up all its fuel and will have lost its heat. Such a star is called a black dwarf. After the Sun has become a black dwarf, the earth will be dark and cold. If any atmosphere remains there , it will have frozen onto the earth"s surface.

单选题The high development of economic technology ______.

单选题Based on a recent survey of the attitudes of people on Medicare is ______.

单选题A good hand at management usually has second ______ to one"s bow, a best card to be played when needed.

单选题 The fact that most Americans live in urban areas does not mean that they {{U}}reside{{/U}} in the center of large cities. In fact, more Americans live in the suburbs of large metropolitan areas than in the cities themselves. The Bureau of the Census regards any area with more than 2,500 people as an urban area, and does not consider boundaries of cities and suburbs. According to the Bureau, the political boundaries are less significant than the social and economic relationships and the transportation and communication systems that {{U}}integrate{{/U}} a locale. The term used by the Bureau for an integrated metropolis is an MSA, which stands for Metropolitan Statistical Area. In general, an MSA is any area that contains a city and its surrounding suburbs and has a total population of 50,000 or more. At the present time, the Bureau reports more than 280 MSAs, which together account for 75 percent of the US population. In addition, the Bureau recognizes 18 megapolises, that is, continuous {{U}}adjacent{{/U}} metropolitan areas. One of the most obvious megapolises includes a chain of hundreds of cities and suburbs across 10 states on the East Coast from Massachusetts to Virginia, including Boston, New York, and Washington, D.C. In the Eastern Corridor; as it is called, a population of 45 million inhabitants is concentrated. Another megapolis that is growing rapidly is the California coast from San Francisco through Los Angeles to San Diego.

单选题Panic swept through the swimmers as they caught sight of a huge shark approaching menacingly. A. Tension B. Excitement C. Fear D. Nervousness

单选题Twelve is to three ______ four is to one.