题目内容
A membership list of 720 people shows that 36 have first and last names that begin with the same letter. If a person is selected at random, what is the probability that his or her first and last name does NOT begin with the same letter（）
查看答案
搜索结果不匹配？点我反馈
更多问题
Winning the party’s nomination for president signaled the ______ of the senator’s political career; he had reached his ultimate goal.
While forensic scientists commonly rely on fingerprints to help identify aLine person, it is not possible to use the same kind of technology with other speciesof mammals. Recently, however, a group of researchers from Tokyo developed adevice that allows them to identify individuals of the endangered Ganges River(5) dolphin species. This underwater acoustic device measures the clicking soundsproduced by the creatures and helps with identification and tracking, since eachsound is as completely unique as a fingerprint.Ganges River dolphins are rare in that, unlike the majority of theircounterparts, they live in rivers and lakes rather than oceans. The species is blind(10) and uses clicks to send out sonar pulses for guidance and to find food. In the pastfew decades, their numbers have decreased by 50 percent, because of fishing netentanglement, human predation, pollution, construction, or a combination ofthese factors. With this new acoustic technology, scientists hope to get a betteridea of how many of these dolphins still exist, as well as their migration patterns(15) and feeding habits. In turn, this information may help scientists protect andconserve this unique species. The author mentions that the Ganges River dolphin species is blind and uses clicks to send out sonar pulses for guidance and to find food (lines 9-10) most probably in order to（）
TEXT B In the college admissions wars. we parents are the true gladiators. We’re pushing our kids to get good grades, take SAT prep courses and build resumes so they can get into the college of our first choice. We say our motives are selfless and sensible. A degree from Stanford or Princeton is the ticket for life. If Aaron and Nicole don’t get in, they’re forever doomed. Gosh, we’re delusional. I’ve twice been to the wars. and as I survey the battlefield, something different is happening. It’s oneupmanship among parents. We see our kids’ college pedigrees as trophies attesting to how well--or how poorly--we’ve raised them. But we can’t acknowledge mat our obsession is more about us than them. So we’ve contrived various justifications that turn out to be half-truths, prejudices or myths. It actually doesn’t matter much whether Aaron and Nicole go to Stanford. Admissions anxiety afflicts only a minority of parents. It’s true that getting into college has generally become tougher because the number of high-school graduates has grown. From 1994 to 2006, the increase is 28 percent. Still, 64 percent of freshmen attend schools where acceptance rates exceed 70 percent, and the application surge at elite schools dwarfs population growth. We have a full blown prestige panic; we worry that there won’t be enough trophies to go around. Fearful parents prod their children to apply to more schools than ever. "The epicenters of parental anxiety used to be on the coasts: Boston, New York, Washington, Los Angeles," says Tom Parker, Amherst’s admissions dean. "But it’s radiated throughout the country." Underlying the hysteria is the belief that scarce elite degrees must be highly valuable. Their graduates must enjoy more success because they get a better education and develop better contacts, All that’s plausible--and mostly wrong. "We haven’t found any convincing evidence that selectivity or prestige matters," says Ernest T. Pascarella of the University of Iowa, co-author of How College Affects Students, an 827 page evaluation of hundreds of studies of the college experience. Selective schools don’t systematically employ better instructional approaches than less-selective schools, according to a study by Pascarella and George Kuh of Indiana University. Some do; some don’t. On two measures--professors’ feedback and the number of essay exams--selective schools do slightly worse. By some studies, selective schools do enhance their graduates’ lifetime earnings. The gain is reckoned at 2 percent to 4 percent for every 100 point increase in a school’s average SAT scores. But even this ad vantage is probably a statistical fluke. A well known study by Princeton economist Alan Krueger and Stacy Berg Dale of Mathematica Policy Research examined students who got into highly selective schools and then went elsewhere. They earned just as much as graduates from higher-status schools. Kids count more than their colleges. Getting into Yale may signify intelligence, talent and ambition. But it’s not the only indicator and, paradoxically, its significance is declining. The reason: so many similar people go elsewhere: Getting into college isn’t life’s only competition. In the next competition--the job market, graduate school--the results may change. Old-boy networks are breaking down, Krueger studied admissions to one top Ph. D. program. High scores on the Graduate Record Exam helped explain who got in; Ivy League degrees didn’t. So, parents, lighten up. The stakes have been vastly exaggerated. Up to a point, we can rationalize our pushiness. America is a competitive society, our kids need to adjust to that. But too much pushiness can be destructive; The very ambition we impose on our children may get some into Harvard but may also set them up for disappointment. One study of students 20 years out found that, other things being equal, graduates of highly selective schools experienced more job dissatisfaction. They may have been so conditioned to being on top that anything less disappoints. What fires parents’ fanaticism is their self-serving desire to announce their own success. Many succumb; I did. I located my ideal school for my daughter. She got in and went elsewhere. Take that, Dad. I located the ideal school for my son. Fleck, he wouldn’t even visit the place, Pow, Dad. They both love their schools and seem amply stimulated. Foolish Dad. It can be inferred from the fourth paragraph that ______.
Questions 1 to 5 are based on an interview. At the end of the interview you will be given 10 seconds to answer each of the fallowing five questions. Now listen to the interview. According to Dr. Nell, what is the most noticeable effect of smaller families
微信支付 
支付宝支付