Scientists call Newton’s idea _____ gravitation reaches throughout the universe the

A.A blastema will form. but will not grow, and regeneration will fail.

B.No regeneration occurs, and the stump heals over as it would in a mammal.

C.Outgrowth will occur, but the identity of the limb will be lost and normal proximo-distal patterning will not occur.

D.Regeneration of most tissues will occur normally, but regeneration of the nerves will not occur.

. the amount of; C. a number of} salt in fresh water used on coastal farms. As a result farmers are increasingly {A. unable; B. able; C. possible} to use fields close to the sea.

Scientists call this process “salinization” which means a mixture of salt and water. Salinization is reducing the world’s irrigated lands {A. to; B. by; C. at} 1 to 2 percent every year.

But a farmer in the Netherlands is now using a mixture of sea and fresh water to grow healthy and tasty vegetables. Marc Van started with an {A. investment; B. examination; C. experiment}. “We put in a lot of plants in the fields and then we put in, put them in fresh water and in sea water and all the varieties between it, and then we see which variety is surviving and which variety is {A. living; B. dead; C. dying}.”

16. A. irritates B. is irritating C. irritated D. irritate

17. A. receive B. received C. to receive D. receiving

18. A. are travelling B. were travelling C. travel D. was traveling

19. A. losing B.lose C.lost D. to lose

20. A. learnt B. had learnt C. have learnt D. are learning

21. A. used to B. to used to C. get used to D. to get used to

22. A. to B. 一 C. are D. is

23. A. on B. to C. what D. that

24. A. 一 B. All C. Every D.Any

25. A. l had B. l' d had C. I'd have D. have

What might be some early warming signs of: （a)a newt competitor coming into your market; （b)an employee work stoppage; or （c)a new technology that could change demand for your product？

Section A

According to a new school of scientists, technology has been overlooked as a force in expanding the horizons of scientific knowledge.【51】Science moves forward, they say, not so much through the insights of great men of genius but by more ordinary things like improved techniques and tools.【52】" In short, " a leader of the new school contends "the scientific revolution, as we call it, has been largely caused by the improvement, invention and use of a series of instruments that have expanded the reach of science in innumerable directions.

【53】Over the years, tools, and technology themselves as a source of fundamental innovation have largely been ignored by historians and philosophers of science. The modern school that hails technology argues that such masters as Galileo, Newton, Maxwell, and Einstein, and inventors such as Edison, attached great importance to and derived great benefit from, crafty information and technological devices of different kinds that were used in scientific experiments.

The centerpiece of the argument for technology was an analysis of Galileo’s role at the start of the scientific revolution. The wisdom of the day was derived from Ptolemy, an astronomer of the second century, whose elaborate system of the sky put Earth at the center of all heavenly motion.【54】Galileo’s greatest glory was that in 1609 he was the first person to turn the newly invented telescope on the heavens to prove that the planets revolve around the sun rather than around the Earth. But the real hero of the story, according to the new school of scientists, were improvements in the machinery used for making eye-glasses.

Federal policy is necessarily involved in the technology vs. genius dispute.【55】Whether governments should increase financing for pure science at the expense of technology or vice versa often depends on the issue of which of the two is seen as the driving force.

(51)

ings, watch the larger-than-life play on the 4th floor, and travel to other worlds, to far away stars, on the 5th floor.

Don' t just look. You are expected to feel, to turn, to push. Build your own house and earn why t stands or falls. Use computers to work out plans just as famous scientists have done. There s always something new to learn at the Maryland Science Center.

Children and group visitors enjoy half price.

The excitement of the Maryland Science Center does not end when you leave. Visit the Science Store for a gift you' d like to keep. Electronic jewelry(电子珠宝), games, books, and more — take part of the Science Center home with you.

Information

Where to call:

24 hour general(常规的) information(410)685-5225

24 hour STARLINE night, sky information (410)S39-STAR

Group visitor information (410) 685-2370

Hours:

The Maryland Science Center is open 7 days a week(except Thanksgiving Day and Christmas

Day)

Monday-Friday 10 a. m.-p. m

Saturday and Sunday 10a.m.-p.m.

Whacan visitors do at the Maryland Science Center？

A．Learn science by trying it out.

B．Watch and take part in a play.

C．Make gifts for their friends.

ph of a misguided cause is that good people do nothing.”One such cause now seeks to end biomedical research because of the theory that animals have rights ruling out their use in research. Scientists need to respond forcefully to animal rights advocates, whose arguments are confusing the public and thereby threatening advances in health knowledge and care. Leaders of the animal rights movement target biomedical research because it depends on public funding, and few people understand the process of health care research. Hearing allegations of cruelty to animals in research settings, many are perplexed that anyone would deliberately harm an animal. For example, a grandmotherly woman staffing an animal rights booth at a recent street fair was distributing a brochure that encouraged readers not to use anything that opposed immunizations, she wanted to know if vaccines come from animal research. When assured that they do, she replied,“Then I would have to say yes.”Asked what will happen when epidemics return, she said,“Don’t worry, scientists will find some way of using computers.”Such well-meaning people just don's understand. Scientists must communicate their message to the public in a compassionate, understandable way-in human terms, not in the language of molecular biology. We need to make clear the connection between animal research and a grandmother's hip replacement, a father's bypass operation a baby's vaccinations, and even a pet's shots. To those who are unaware that animal research was needed to produce these treatments, as well as new treatments and vaccines, animal research seems wasteful at best and cruel at worst.Much can be done. Scientists could“adopt”middle school classes and present their own research. They should be quick to respond to letters to the editor, lest animal rights misinformation go unchallenged and acquire a deceptive appearance of truth. Research institutions could be opened to tours, to show that laboratory animals receive humane care. Finally, because the ultimate stakeholders are patients, the health research community should actively recruit to its cause not only well-known personalities such as Stephen Cooper, who has made courageous statements about the value of animal research, but all who receive medical treatment. If good people do nothing there is a real possibility that an uninformed citizenry will extinguish the precious embers of medical progress.

第46题：The author begins his article with Edmund Burke\'s words to

A. call on scientists to take some actions.

B. criticize the misguided cause of animal rights.

C. warn of the doom of biomedical research.

D. show the triumph of the animal rights movement.

de an early warming of major earthquakes. The new system is designed to give a warming seconds before an earthquake strikes.

That may not sound like very long. However, it could give people time to get under a table. The flow of electric power or gas could be cut, air traffic controllers could warn away pilots. Even so-called “smart buildings” could be designed to get ready.

Richard Allen of the University of Wisconsin and Hiroo Kananmori of the California Institute of Technology developed the program. They call it the Earthquake Alarm System. A report published in Science magazine describes it.

The system uses a mathematical program to measure information collected by instruments placed across the Los Angeles area. Southern California already has more than 150 stations that measure movements within the ground. The information they collect is sent to a high-speed computer.

The new system is designed to estimate the strength of the earthquake once the shaking starts. Areas directly above the center of the earthquake would have the least warning. Distant places might have as long as forty seconds.

Professor Allen notes that an early warning system for earthquakes would require a major campaign of public education. Then, another problem is the possibility of false alarms.

48. When an earthquake strikes, the new alarm system would give people enough time to______.

A.find shelter in “smart buildings”

B.tell pilots to land the airplanes

C.know the strength of the earthquake

D.turn off gas and electricity

49.The “earthquake Alarm System” described in the passage has been developed by ______.

A.Richard Allen and his teacher Hiroo Kananmori

B.Hiroo Kananmori and his assistant Richard Allen

C.two scientists from the United States and Japan

D.two scientists from two universities in the US

50. The new alarming program_________.

A.is widely used in Winsconsin and California

B.is still in process of development

C.is especially useful for areas directly above center of the earthquake

D.gives warming at least forty seconds before the earthquake starts

51. The new alarm system may be described as _________.

A.a program that analyzes data across the United States

B.a network of instruments placed across the United States

C.a program to collect information from 150 different stations

D.a very powerful computer that can do mathematical problems

52. The writer of this passage has most probably used information from_________.

A.a meeting held at the California Institute of Technology

B.an interview with Professor Richard Allen

C.a report published in the Science magazine

D.an announcement made by a group of scientists

分别为“计算”和“关闭”。

程序运行时，单击“计算”按钮应完成下列操作：

①计算“客户”表中每个订单的“总金额”(总金额为“定货”中订单好相同的所有记录的“单价*数量”的总和)。

②根据上面的计算结果，生成一个新的自由表newt，该表只包括“客户号”、“订单号”和“总金额”项，并按客户号升序排序。

单击“关闭”按钮，程序终止运行。