单选题WhydoesthewomancallMr.Johnson?A.Tointroduceajob.B.Tosetupalaboratory.C.Togotoacollege.D.Togetajob.

单选题{{B}}Text 1{{/B}} With only about 1,000 pandas left in the world, China is desperately trying to clone the animal and save the endangered species. That's a move similar to what a Texas A&M University researcher has been undertaking for the past five years in a project called "Noah's Ark." Dr. Duane Kraemer, a professor in Texas A&M's College of Veterinary Medicine and a pioneer in embryo(胚胎) transfer work and related procedures, says he salutes the Chinese effort and "I wish them all the best success possible. It's a worthwhile project, certainly not an easy one, and it's very much like what we're attempting here at Texas A&M--to save animals from extinction." Noah's Ark is aimed at collecting eggs, embryos, semen (精子) and DNA of endangered animals and storing them in liquid nitrogen. If certain species should be come extinct, Kraemer says there would be enough of the basic building blocks to reintroduce the species in the future. It is estimated that as many as 2,000 species of mammals, birds and reptiles w ill become extinct over the next 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years. This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal. The entire procedure could take from three to five years to complete. "The nuclear transfer of one species to another is not easy, and the lack of available panda eggs could be a major problem," Kraemer believes. "They will probably have to do several hundred transfers to result in one pregnancy. It takes a long time and it's difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort, "adds Kraemer, who is one of the leaders of the Missy plicity Project at Texas A&M, the first ever attempt at cloning a dog.

单选题请根据下面短文回答下列问题： You find a piece of paper outside your door today. Read it carefully and you may find it quite important to you. YOUR BUILDING SERVICE We help people in this part of the city by: * checking all plans (方案) before people build new houses or make changes to old ones; * checking water pipes (管道); * looking at any problem buildings and making sure that they are all right. We check 900 building plans each year. We look at 700 building places each month to see if things are going on well. WHERE CAN YOU GET MORE DETAILS The Building Service is at the City Hall, Kenton, CN1 6KJ. Telephone: 676316 or 676317 We have office hours for people to come and talk about problems. HELP US TO HELP YOU If you do building work, please think of other people. Be nice to people living next door. If you want to talk to us about your problems, please give as much detail (细节) as possible. If you see any building problems, please let us know right away. WHAT YOU CAN DO IF THINGS GO WRONG If you are not happy with us and have anything to say about the Building Service, please come, phone or write to The Planning Office, City Hall, Kenton, CN1 6KJ. Telephone: 676317

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单选题Carrieweight.

单选题 {{B}} Text{{/B}} There is no denying that students should learn something about how computers work, just as we expect them at least to understand that the internal-combustion engine has something to do with burning fuel, expanding gases and pistons being driven, {{U}} {{U}} 1 {{/U}} {{/U}}people should have some basic idea of how the things that they use {{U}} {{U}} 2 {{/U}} {{/U}}what they do. Further, students might be helped by a course {{U}} {{U}} 3 {{/U}} {{/U}}considers the computer's impact {{U}} {{U}} 4 {{/U}} {{/U}}society. But that is not {{U}} {{U}} 5 {{/U}} {{/U}}is meant by computer literacy. For computer literacy is not a form of literacy; it is a trade skill that should not be {{U}} {{U}} 6 {{/U}} {{/U}}as a liberal art. {{U}} {{U}} 7 {{/U}} {{/U}}how to use a computer and learning how to program one are two distinct activities. A {{U}} {{U}} 8 {{/U}} {{/U}}might be made {{U}} {{U}} 9 {{/U}} {{/U}}the competent citizens of tomorrow should {{U}} {{U}} 10 {{/U}} {{/U}}themselves from their fear of computers. But this is quite different {{U}} {{U}} 11 {{/U}} {{/U}}saying that all ought to know how to program one. {{U}} {{U}} 12 {{/U}} {{/U}}that to people who have chosen programming as a career. While programming can be lots of fun, {{U}} {{U}} 13 {{/U}} {{/U}}while our society needs some people who are experts at it, the same is {{U}} {{U}} 14 {{/U}} {{/U}}of auto repair and violin-making. Learning how to use a computer is not {{U}} {{U}} 15 {{/U}} {{/U}}difficult, and it gets {{U}} {{U}} 16 {{/U}} {{/U}}all the time as programs become more "user-friendly'. Let us {{U}} {{U}} 17 {{/U}} {{/U}}that in the future everyone is going to have to know how to use a computer to be a {{U}} {{U}} 18 {{/U}} {{/U}}citizen. What does the phrase "learning to use a computer" mean? It sounds like "learning to drive a car"; that is, it sounds as if there is {{U}} {{U}} 19 {{/U}} {{/U}}set of definite skills that, {{U}} {{U}} 20 {{/U}} {{/U}}acquired, enable one to use a computer.

单选题This passage assumed the desirability of______.

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单选题{{I}} Questions 22-25 are based on the following conversation. You now have 20 seconds to read the questions 22-25.{{/I}}

单选题After how many minutes does an average person repeat the sleep cycle?

单选题Questions 15 to 18 are based on the passage you have just heard.

单选题Questions 14 to 17 are based on the following passage.

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单选题WhydidtheRomansbuildsomanyroads?A.TheywantedRometobecomethecenteroftheworld.B.Theywantedtopaveimportantroadswithlarge,flatstones.C.Theyneededtokeeptheirsoldiersbusybymakingthembuildroads.D.Theyneededtheroadstomovelargearmiesandtradegoods.