单选题A mere touch at the wall of the cabin can ______ the astronauts flying about in the space ship.

单选题The author found it funny that the girl had .

单选题There is nothing so lovely as to be beautiful. Beauty is a gift of the nature and we should ______ it as such.

单选题 Promptness is important in American business, academic, and social settings. The{{U}} (56) {{/U}}of punctuality is taught to young children at school. Today slips and the use of bells signal to the child that{{U}} (57) {{/U}}and time itself are to be respected. People who keep{{U}} (58) {{/U}}are considered dependable. If people are late for job interviews, appointments, or classes, they are often{{U}} (59) {{/U}}unreliable and irresponsible. In the business setting, "time is money" and companies may{{U}} (60) {{/U}}their executive for tardiness to business meetings. Of course, it is not always possible to be punctual. Social and business etiquette also provides rules for{{U}} (61) {{/U}}arrivals. Calling{{U}} (62) {{/U}}the telephone if one is going to be more than a few minutes late for{{U}} (63) {{/U}}appointments is{{U}} (64) {{/U}}polite and is often expected. Keeping a friend waiting{{U}} (65) {{/U}}ten to twenty minutes is considered rude. Respecting deadlines is also important in academic and professional{{U}} (66) {{/U}}. Students who{{U}} (67) {{/U}}assignments late may be surprised to find that the professor will{{U}} (68) {{/U}}their grade or even refuse to{{U}} (69) {{/U}}their work. {{U}}(70) {{/U}}it is a question of arriving on time or of meeting a deadline, people are culturally expected to stick to the schedule time.

单选题Before you decide on a Uvocation/U, it might be a good idea to consult a few good friends.

单选题The new technology has (made possible) for the doctor to (make) diagnoses (without seeing) the patient in (person).

单选题What was Helen Lee's major consideration when she changed her job in the middle of her career?

单选题The purpose for the author to share her experience is to_______

单选题We have arranged to go to the cinema on Friday, but we can be ______ and go another day.

单选题A committee has released its final report on ways to improve math education for American students. The National Mathematics Advisory Panel was created two years ago. The panel examined thousands of reports, along with survey results from more than seven hundred algebra (代数) teachers. Yet the report, released last month, is short on detailed advice. It says existing research does not show just what knowledge or skills are needed for effective math teaching. The solution? More research. The report does say basic math skills must be taught completely in the early years of school. Children should be able to add and subtract in the third grade. By the end of fifth grade, they should be able to multiply and divide. Teachers should avoid revisiting skills year after year. And, the experts say, it is wrong to think children are "too young" or "not ready" to learn certain content at certain ages. The report says a major goal for kindergarten through eighth grade should be understanding fractions. These skills are needed for algebra. Yet, the report says, at the present time they seem to be severely underdeveloped in American students. Schools are urged to prepare more students to take algebra by the eighth grade. Many people think math success depends largely on natural talent or ability; the experts say it depends on effort. Studies have shown that children improve in math when they believe that their efforts to learn make them "smarter." The report also calls for strengthening the math preparation of elementary and middle school teachers. And it urges publishers to shorten math textbooks, which are often up to a thousand pages long. The panel says math books are much smaller in many nations where students do better in math than American children. Publishers say American textbooks have to meet the goals of different states for what should be taught in each grade. Also, the report calls for more research on the effects of using calculators. Many algebra teachers expressed concern about their use in the lower grades. And the report says gifted students who can move through the material much faster than others should be permitted to do so. The math panel says the educational system needs major changes. If not, it warns that the United States will lose the mathematical leadership it possessed during most of the twenty first century.

单选题Some rural people in southern China still use water power to Uconvert/U grain into flour.

单选题Speaker A: Dr. Smith, what's wrong with my father? Speaker B: Well, ______ considering his advanced age.

单选题Hardly (would he arrive) at his office (when) his (phone calls) came in (rapid succession).

单选题Tom was ______ of a crime he didn't commit. He fought for many years to clear his name.

单选题______ all of us who are here tonight, I would like to thank Mr. Johnson for his informative talk.

单选题Woman: Julie's dress looks funny. That style went out last year. Man: Oh, come on, as long as it looks good on her.

单选题It is suggested in Paragraph 3 that childless folks ______.

单选题{{B}}Passage Two{{/B}} The current emergency in Mexico City that has taken over our lives is nothing. I could ever have imagined for me or my children, we are living in an environmental crisis, an air-pollution emergency of unprecedented severity. What it really means is that just to breathe here is to play a dangerous game with your health. As parents, what terrorizes us most are reports that children are at higher risk because they breathe more times per minute. What more can we do to protect them and ourselves? Our pediatrician's (儿科医师的) medical recommendation was simple: abandon the city permanently. We are foreigners and we are among the small minority that can afford to leave. We are here because of my husband's work. We are fascinated by Mexico—its history and rich culture. We know that for us, this is a temporary danger. However, we cannot stand for much longer the fear we feel for our boys. We cannot stop them from breathing. But for millions, there is no choice. Their lives, their jobs, their futures depend on being here. Thousands of Mexicans arrive each day in this city, desperate for economic opportunities. Thousands more are born here each day. Entire families work in the streets and practically live there. It is a familiar sight: as parents hawk goods at stoplights, their children play in the grassy highway dividers, breathing exhaust fumes. I feel guilty complaining about my personal situation; we won't be here long enough for our children to form the impression that skies are colored only gray. And yet the government cannot do what it must to end this problem. For any country, especially a developing Third World economy like Mexico's, the idea of barring from the capital city enough cars, closing enough factories and spending the necessary billions on public transportation is simply not an option. So when things get bad, as in the current emergency, Mexico takes half measures—prohibiting some more cars from circulating, stopping some factories from producing—that even its own officials concede aren't adequate. The word "emergency" implies the unusual. But when daily life itself is an emergency, the concept loses its meaning. It is human nature to try to adapt to that which we cannot change or to mislead ourselves into believing we can adapt.

单选题The victims of drunken driving in America over the past decade______an incredible 250,000, with three killed every hour of every day on average.

单选题As to the question of refreshments, I should think orange juice and potato chips will be sufficient .