单选题Nevertheless, researchers of the Pleistocene epoch have developed all sorts of more or less fanciful model schemes of how they would have arranged the Ice Age ______ in charge of events. A. they had been B. had they been C. they had have been D. were they

单选题Passage Four In a year marked by uncertainty and upheaval, officials at New Orleans universities that draw applicants nationwide are not following the usual rules of thumb when it comes to colleges admissions. The only sure bet, the say, is that this fall's entering classes--the first since Katrina-- will be smaller than usual. In typical years, most college admissions officials can predict fairly accurately by this point in the admissions cycle how many high school seniors will commit to enrolling in their institutions. Many of the most selective schools require students--who increasingly are applying to multiple institutions- to make their choices by May 1. Loyola University, whose trustees will vote May 19 on whether to drop several degree programs and eliminate 17 faculty positions, received fewer applications--about 2,900 to date, compared with 3,500 in recent years. The school hopes to enroll 700 freshman, down from 850 in the past few years. Historically black Dillard University, which is operating out of a hotel and was forced to cancel its annual March open house, also saw drops, as did Xavier University, a historically black Catholic institution that fell behind its recruitment schedule. Dillard won't release numbers, but spokeswoman Maureen Larkins says applications were down and enrollments are expected to be lower than in the past, Xavier admissions dean Winston Brown says its applicant pool fell by about half of last year's record 1,014; he hopes to enroll 500 freshman. In contrast, Tulane University, which is the most selective of the four and developed an aggressive recruitment schedule after the hurricane, enjoyed an 11% increase in applications this year, to a record 20,715. Even so, officials predict that fewer admitted students will enroll and are projecting a smaller-than-usual freshman class- 1,400, compared with a more typical 1,600. Tulane officials announced in December that they would eliminate some departments and faculty positions. Like Tulane, other schools are taking extra steps this year to woo admitted students, often by enlisting help from alumni around the country and reaching out to students with more e-mail, phone calls or web-based interactions such as blogs. In addition, Loyola is relaxing deadlines, sweetening the pot with larger scholarships and freezing tuition at last year's level. Dillard, too, is freezing tuition. It's also hosting town meetings in target cities and regions nationwide, and moved its academic calendar back from August to mid-September "to avert the majority of the hurricane season." Larkins says, Xavier extended its application deadline and stepped up its one-on-one contact with accepted students. And Tulane, among other things, has doubled the number of on-campus programs for accepted students and hosted a community service weekend program. While the schools expect applicants to be apprehensive, the admissions officials also see encouraging sins of purposefulness among applicants. "A lot of students who are choosing to come to this city are saying, 'I want to be a part of the action,' " says Stieffi, noting that Loyola's transfer applications were up 30%. And while applications to Xavier are down, Brown is betting that students who do apply are serious, "The ones who are applying, we feel, are more likely to come," he says.

单选题Gasoline is processed from ______ oil.

单选题If you never review your lessons, you will only have yourself to ______ if you fail in your examination.

单选题 People appear to be born to compute. The numerical skills of children develop so early and so inexorably that it is easy to imagine an internal clock of mathematical maturity guiding their growth. Not long after learning to walk and talk, they can set the table with impressive accuracy--one plate, one knife, one spoon, one fork, for each of the five chairs. Soon they are capable of noting that they have placed five knives, spoons, and forks on the table and, a bit later, that this amounts to fifteen pieces of silverware. Having thus mastered addition, they move on to subtraction. It seems almost reasonable to expect that if a child were secluded on a desert island at birth and retrieved seven years later, he or she could enter a second-grade mathematics class without any serius problems of intellectual adjustment. Of course, the truth is not so simple. This century, the work of cognitive psychologists has illuminated the subtle forms of daily learning on which intellectual progress depends. Children were observed as they slowly grasped--or, as the case might be bumped into- concepts that adults take for granted, as they refused, for instance, to concede that quantity is unchanged as water pours from short stout glass into a tall thin one. Psychologists have since demonstrated that young children, asked to count the pencils in a pile, readily report the number of blue or red pencils, but must be coaxed into finding the total. Such studies have suggested that the rudiments of mathematics are mastered gradually, and with effort. They have also suggested that the very concept of abstract numbers--the idea of a oneness, a twoness, a threenes that applies to any class of objects and is a prerequisite for doing anything more mathematically demanding than setting a table--is itself far from innate.

单选题The clown’s performance was so funny that the audience, adults and children alike, were all thrown into Uconvulsions/U.

单选题Some of his colleagues say he's loud and ______ and that everyone hates him.

单选题Max, a student of Chinese literature from Australia, is very ______ Beijing opera.

单选题Understanding is one of the most important ______ of a happy marriage. A. initiatives B. ingredients C. proverbs D. possessions

单选题Shyness is a nearly universal human trait. Almost everyone has bouts of it, and half of those surveyed describe themselves as shy. Perhaps because it's so widespread, and because it suggests vulnerability, shyness is often an endearing trait: Princess Diana, for example, won millions of admirers with her "Shy Di" manner. The human species might not even exist if not for an instinctive wariness of other creatures. In fact, the ability to sense a threat and a desire to flee are lodged in the most primitive regions of the brain. But at some life juncture, roughly 1 our of every 8 people becomes so timid that encounters with others turn into a source of overwhelming dread. The heart races, palms sweat, mouth grows dry, words vanish; thoughts become cluttered, and an urge to escape takes over. This is the face of social phobia (also known as "social anxiety disorder"), the third most common mental disorder in the United States, behind depression and alcoholism. Some social phobics can hardly utter a sentence without obsession over the impression they are making. Others refuse to use public restrooms or talk on the telephone. Sometimes they go mute in front of the boss or a member of the opposite sex. At the extreme, they built a hermitic life, avoiding contact with others. Though social anxiety's symptoms have been noted since the time of Hippocrates, the disorder was a nameless affliction until the late 1960s and didn't make its way into psychiatry manuals until 1980. As it became better known, patients previously thought to suffer panic disorder were recognized as being anxious only in social settings. A decade ago, 40 percent of people said they were shy, but in today's "nation of strangers" --in which computers and ATMs make face-to-face relations less and less common--that number is nearing 50 percent. Some psychologists are convinced that the Internet culture, often favored by those who fear human interaction, greases the slope from shyness to social anxiety. If people were slightly shy to begin with, they can now interact less and less, and that will make the shyness much worse.

单选题A cut in the budge put 10 percent of the state employee's in ______.

单选题Few of the young realize what feats lie ______ them.

单选题No president who performs his duties faithfully and______can have any leisure.

单选题Her government, by its clear ______ with many previous policies, has placed a double strain on the traditional relationship. A. shatter B. rupture C. breach D. collapse

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单选题If you're a regular reader of blogs.or indeed of any kind of news website, you've probably been frustrated from time to time by information overload: the blogosphere creates______material for any human being to comfortably______.

单选题Seventeen-year-old Quantae Williams doesn't understand why the U. S. Supreme Court struck down his school district's racial diversity program. He now (61) the prospect of leaving his mixed-race high school in suburban Louisville and (62) to the poor black downtown schools where he (63) in fights. "I'm doing (64) in town. They should just leave it the (65) it is," said Williams, using a fond nickname for suburban Jeffersontown High School, (66) he's bused every day from his downtown neighborhood. "Everything is (67) , we get along well. If I go where all my friends go, I'll start getting in trouble again," Williams said as he took a (68) from his summer job (69) clothing (70) for poor families. Last month's 5-4 ruling by the Supreme Court struck down programs that were started voluntarily in Louisville and Seattle. The court's decision has left schools (71) the country (72) to find a way to protect (73) in their classrooms. Critics have called the decision the biggest (74) to the ideals of the 1954 Brown vs. Board of Education (75) , which outlawed racial segregation in U. S. public schools. With students already (76) to schools for the (77) year that begins in September, (78) will be immediately affected by the Supreme Court decision. In Jefferson County, officials said it could be two years (79) a new plan is (80) place, leaving most students in their current schools.

单选题In most corners of the world malnutrition is plainly a matter of outright insufficiency of food for the population--where the majority of the people do not obtain enough food calories to meet minimal needs for support of physical work and for maintenance of health. Elsewhere the problem may be not one of insufficient, calories but of lack of specific nutrients essential for health. In Latin America, as in other places, the dread protein deficiency disease kwashiorkor is taking its heavy toll of children's lives. Strategic vitamins and minerals may be lacking due to traditional diets which are nutritionally imbalanced. Here people continue their eating pattern year after year without knowledge of that their dietary habits are doing to themselves and to future generations. With a basic knowledge of nutritional needs and deficiencies, efforts could be directed to finding food substitutes which could meet these needs. Mixtures of vegetable proteins, like soybeans and peanuts, could provide an abundance of cheap, useful protein where meat, eggs, and milk are not within economic reach of large groups in the population. Efforts could also be expended on increasing the agricultural productivity in specific regions; where large areas are given over to relatively inefficient use as grazing land, the intensive production of vegetable protein crops could bring remedial nutrition to an undernourished population. Elsewhere, enrichment with specific vitamins and minerals of traditional staple foods that are deficient in essential nutritive factors could wipe out disabling deficiency diseases, like beriberi or pellagra, almost overnight. Similarly, addition of minute amounts of inexpensive iodine to salt could benefit large areas where endemic goiter has been accepted as an integral part of life for generations.

单选题It is difficult to ______ this goal if you work hard continuously.