单选题Grant was one of a body of men who were self-reliant ______, who cared hardly anything for the past but had a sharp eye for the future. A. on themselves B. on not making a fault C. to a fault D. to remain ahead

单选题The realization that the most economically significant sanctions cannot survive poses a new danger: that effective sanctions will be allowed to lapse, ______ a series of token measures.

单选题The proper noun" Mountain Dew" (Paragraph 3) can be used in the context to mean ______.

单选题The new technological revolution in American newspapers has brought increased ______ a wider range of publications and an expansion of newspaper jobs.

单选题The writer believed he had passed the exam ______.

单选题Thispassagemaybea __________.

单选题Our proposal failed to meet the ______ established by the committee, so they gave us no money. A. measurement B. warrant C. partition D. criterion

单选题(Flourish) in the thirteenth century, (traveling musicians), (called) minstrels, played an important part in the cultural life of (the time).

单选题His attitude toward social welfare legislation, based entirely on his perception of himself as a self-made man, ______ him the support of the voters in the state's economically depressed.

单选题Monday's earthquak______.windows and woke residents.

单选题Throughout the downtown area, lampposts and tree stumps have been ______with posters and billboards which are warts in the city.

单选题Their proposal is better than ours, ______.

单选题After a long walk on a hot day, one often feels______.

单选题All living creatures have to constantly______various changes in their environment in order to survive.

单选题Pam loves children but she doesn't like them when they're noisy. It gets on her ______. A. nerves B. feelings C. energies D. pains

单选题American society is not nap(午睡)friendly. In fact, says David Dinges, a sleep specialist at the University of Pennsylvania School of Medicine. "There's even a prohibition against admitting we need sleep. " Nobody wants to be caught napping or found asleep at work. To quote a proverb: "Some sleep five hours, nature requires seven, laziness nine and wickedness eleven. " Wrong. The way not to fall asleep at work is to take naps when you need them. "We have to totally change our attitude toward napping," says Dr. William Dement of Stanford University, the godfather of sleep research. Last year a national commission led by Dement identified an "American sleep debt" which one member said was as important as the national debt. The commission was concerned about the dangers of sleepiness: people causing industrial accidents or falling asleep while driving. This may be why we have a new sleep policy in the White House. According to recent reports, president Clinton is trying to take a half hour snooze(打瞌睡)every afternoon. About 60 percent of American adults nap when given the opportunity. We seem to have "a midafternoon quiet phase" also called "a secondary sleep gate. " Sleeping 15 minutes to two hours in the early afternoon can reduce stress and make us refreshed. Clearly, we were born to nap. We Superstars of Snooze don't nap to replace lost shut eye or to prepare for a night shift. Rather, we "snack" on sleep, whenever, wherever and at whatever time we feel like it. I myself have napped in buses, cars, planes and on boats; on floors and beds; and in libraries, offices and museums.

单选题As the ship is loaded, it will sink deeper and deeper into the water, but only sink deep enough to______an amount of water equal to the weight of the ship and its cargo.(厦门大学2012年试题)

单选题The paint on the clown's face ______ that it scared the children he was trying to entertain.

单选题Less than 40 years ago in the United States, it was common to change a one-dollar bill for a dollar's worth of silver. That is because the coins were actually made of silver. But those days are gone. There is no silver in today's coins. When the price of the precious metal rises above its face value as money, the metal will become more valuable in other uses. Silver coins are no longer in circulation because the silver in coins is worth much more than their face value. A silver firm could find that it is cheaper to obtain silver by melting down coins than by buying it on the commodity markets. Coins today are made of an alloy of cheaper metals. Gresham's Law, named after Sir Thomas Gresham, argues that "good money" is driven out of circulation by "bad money". Good money differs from bad money because it has higher commodity value. Gresham lived in the 16th century in England where it was common for gold and silver coins to be debased. Governments did this by mixing cheaper metals with gold and silver. The governments could thus make a profit in coinage by issuing coins that had less precious metal than the face value indicated. Because different mixings of coins had different amounts of gold and silver, even though they bore the same face value, some coins were worth more than others as commodities. People who dealt with gold and silver could easily see the difference between the "good" and the "bad" money. Gresham observed that coins with a higher content of gold and silver were kept rather than being used in exchange, or were melted down for their precious metal. In the mid-1960s when the U.S. issued new coins to replace silver coins, Gresham's law went right in action.