单选题Mary Outerbridge is important in the history of lawn tennis because ______.

单选题 In 1784, five years before he became president of the United States, George Washington, 52, was nearly toothless. So he hired a dentist to transplant nine teeth into his jaw-having extracted them from the months of his slaves. That's far different image from the cherry-tree-chopping George most people remember from their history books. But recently, many historians have begun to focus on the roles slavery played in the lives of the founding generation. They have been spurred in part by DNA evidence made available in 1998, which almost certainly proved Thomas Jefferson had fathered at least one child with his slave Sally Hemings. And only over the past 30 years have scholars examined history from the bottom up. Works of several historians reveal the moral compromises made by the nation's early leaders and the fragile nature of the country's infancy. More significantly, they argue that many of the Founding Fathers knew slavery was wrong and yet most did little to fight it. More than anything, the historians say, the founders were hampered by the culture of their time. While Washington and Jefferson privately expressed distaste for slavery, they also understood that it was part of the political and economic bedrock of the country they helped to create. For one thing, the South could not afford to part with its slaves. Owning slaves was "like having a large bank account," says Wiencek, author of An Imperfect God: George Washington, His Slaves, and the Creation of America. The southern states would not have signed the Constitution without protections for the "peculiar institution", including a clause that counted a slave as three fifths of a man for purposes of congressional representation. And the statesmen's political lives depended on slavery. The three-fifths formula handed Jefferson his narrow victory in the presidential election of 1800 by inflating the votes of the southern states in the Electoral College. once in office, Jefferson extended slavery with the Louisiana Purchase in 1803; the new land was carved into 13 states, including three slave states. Still, Jefferson freed Hemings's children--though not Hemings herself or his approximately 150 other slaves. Washington, who had begun to believe that all men were created equal after observing the bravery of the black soldiers during the Revolutionary War, overcame the strong opposition of his relatives to grant his slaves their freedom in his will. only a decade earlier, such an act would have required legislative approval in Virginia.

单选题Language has been changing, but such changes are not so obvious at all linguistic aspects except that of______. (西安外国语学院2006研)

单选题{{B}}Text 3{{/B}} There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedicated to keeping orderly records of governmental units (state and statistics come from the same Latin root, status) and a gentlemanly gambling father who relied on mathematics to increase his skill at playing the odds in games of chance. The influence of the mother on the offspring, statistics, is represented by counting, measuring, describing, tabulating, ordering, and the taking of censuses—all of which led to modem descriptive statistics. From the influence of the father came modem inferentical statistics, which is based squarely on theories of probability. Descriptive statistics involves tabulating, depicting, and describing collections of data. These data may be either quantitative, such as measures of height, intelligence, or grade level—variables that are characterized by an underlying continuum or the data may represent qualitative variable, such as sex, college major, or personality type. Large masses of data must generally undergo a process of summarization or reduction before they are comprehensible. Descriptive statistics is tool for describing or summarizing or reducing to comprehensible form the properties of an otherwise unwieldy mass of data. Inferential statistics is a formalized body of methods for solving another class of problems that present great difficulties for the unaided human mind. This general class of problems characteristically involves attempts to make predictions using a sample of observations. For example, a school superintendent wishes to determine the proportion of children in a large school system who come to school without breakfast, have been vaccinated for flu, or whatever. Having a little knowledge of statistics, the superintendent would know that it is unnecessary and inefficient to question each child; the proportion for the entire district could be estimated fairly accurately from a sample of as few as 100 children. Thus, the purpose of inferential statistics is to predict or estimate characteristics of a population from knowledge of the characteristics of only a sample of the population.

单选题He told us that John, as well as his brother, ______ coming to the party.

单选题{{B}}Passage Two{{/B}} In only two decades Asian Americans have become the fastestgrowing the U. S. minority. As their children began moving up through the nation's schools, it became clear that a new class of academic achievers was emerging. Their achievements are reflected in the nation's best universities, where mathematics, science and engineering departments have taken on a decidedly Asian character. This special liking for mathematics and science is partly explained by the fact' that Asian-American students who began their educations abroad arrived in the U.S. with a solid grounding in mathematics but little or no knowledge of English. They are also influenced by the promise of a good job after college. Asians feel they will be judged more objectively. And the return on the investment in education is more immediate in something like engineering than with an arts degree. Most Asian-American students owe their success to the influence of parents who are deter- mined that their children take full advantage of what the American educational system has to offer. An effective measure of parental attention is homework. Asian parents spend more time with their children than American parents do, and it helps. Many researchers also believe there is something in Asian culture that breeds success, such as ideals that stress family values and emphasize education. Both {{U}}explanations{{/U}} for academic success worry Asian Americans because of fears that they feed a typical racial image. Many can remember when Chinese, Japanese and Filipino immigrants were the Victims of social isolation. Indeed, it was not until 1952 that laws were laid down giving all Asian immigrants the right to citizenship.

单选题Which one of them is not the cohesive device______.

单选题A. stoolB. chooseC. spoonD. flood

单选题(2004) " Would you like tea or coffee? " " Oh,_____."

单选题I know nothing about Persian art; that's quite outside my______.

单选题According to the passage, which of the following is NOT true of women in pattern Ⅲ families?

单选题We can learn from the passage that the name of the 2003UB313

单选题For each blank in the following passage, choose the best answer from the four choices given below. Mark the corresponding letter of your choice with a single bar across the square brackets on your Machine-scoring Answer Sheet. America's Federal Reserve cut interest rates by another quarter-point, to 3.75 %. Wall Street, which had been{{U}} 21 {{/U}}for a sixth half-point cut, was disappointed. The Dow fell by 2%{{U}} 22 {{/U}}the week. The past week's economic statistics gave mixed signals. Exports dropped by 2% in both March and April, largely{{U}} 23 {{/U}}a decline in high-tech investment{{U}} 24 {{/U}};the merchandise-trade{{U}} 25 {{/U}}widened to $ 458 billion in the 12 months{{U}} 26 {{/U}}April.{{U}} 27 {{/U}},the Conference Board's index of consumer confidence was higher than{{U}} 28 {{/U}}in June. Concerns{{U}} 29 {{/U}}inflation in the Euro area{{U}} 30 {{/U}}. Preliminary data{{U}} 31 {{/U}}that German consumer price inflation fell to 3. 1% in the year to June, from 3.5 % in May; wage growth{{U}} 32 {{/U}}to 1.4% in April, a real pay cut of 1.5%. Some economists fear that Germany is on the{{U}} 33 {{/U}}of recession. The IFO index of business confidence dropped more{{U}} 34 {{/U}}than expected in May, and the institute has cut its forecast of GDP{{U}} 35 {{/U}}this year to only 1.2% ,well below the German government's forecast of 2%.

单选题Compared with the VBA 5.0, the VBA 6.0 ______. A．has a lot of improvements B．is much cheaper C．is radically different D．has the same features as in Office 97

单选题Why did you ask him for help instead of Jim? He is ______ helpful than Jim.A. no moreB. any moreC. not moreD. some more