Scientists perform careful experiments and do wide research because______.

A . they are ill B . to sneeze is human nature C . they do not need any conscious help D . there are unwanted things in their noses

A．Right B．Wrong C．Not mentioned

A robot that can open doors and find electrical outlets to recharge itself. Computer viruses that no one can stop. "Predator" fighters, which, though still controlled remotely by humans, come close to a machine that can kill autonomously. Impressed and alarmed by advances in artificial intelligence, a group of computer scientists is debating whether there should be limits on research that might lead to loss of human control over computer-based systems that carry a growing share of society's workload, from waging war to chatting with customers on the phone. Their concern is that further advances could create profound social disruptions and even have dangerous consequences. As examples, the scientists pointed to a number of technologies as diverse as experimental medical systems that interact with patients to simulate sympathy, and computer worms and viruses that defy extermination (消灭) and could thus be said to have reached a "cockroach" stage of ma chine intelligence. While the computer scientists agreed that we are a long way from Hal, the computer that took over the spaceship in "2001: A Space Odyssey," they said there was legitimate concern that technological progress would transform. the work force by destroying a widening range of jobs, as well as force humans to learn to live with machines that increasingly copy human behaviors. The researchers—leading computer scientists, artificial intelligence researchers and roboticists who met at the Asilomar Conference Grounds on Monterey Bay in California—generally dismissed the possibility of highly centralized superintelligences and the idea that intelligence might spring spontaneously from the Internet. But they agreed that robots that can kill autonomously are either already here or will be soon. They focused particular attention on the specter that criminals could exploit artificial intelligence systems as soon as they were developed. What could a criminal do with a speech synthesis system that could disguise as a human being？ What happens if artificial intelligence technology is used to mine personal information from smart phones？ The researchers also discussed possible threats to human jobs, like self-driving cars, software based personal assistants and service robots in the home. Just last month, a service robot developed by Willow Garage in Silicon Valley proved it could navigate the real world. A report from the conference, which took place in private on Feb.25, is to be issued later this year. Some attendees discussed the meeting for the first time with other scientists this month and in interviews. The conference was organized by the Association for the Advancement of Artificial Intelligence (A.A.A.I.), and in choosing Asilomar for the discussions, the group purposefully evoked a landmark event (里程碑式事件) in the history of science. In 1975, the world's leading biologists also met at Asilomar to discuss the new ability to reshape life by swapping genetic material among organisms. Concerned about possible biohazards and ethical questions, scientists had halted certain experiments. The conference led to guidelines for recombinant DNA research, enabling experimentation to continue. The meeting on the future of artificial intelligence was organized by Eric Horvitz, a Microsoft researcher who is now president of the association. Dr. Horvitz said he believed computer scientists must respond to the notions of superintelligent machines and artificial intelligence systems run amok (横行). The idea of an "intelligence explosion" in which smart machines would design even more intelligent machines was proposed by the mathematician I.J.Good in 1965. Later, in lectures and science fiction novels, the computer scientist Vernor Vinge popularized the notion of A．robots for civil use B．military computers C．artificial intelligence D．biochemical weapons

A) motivation B) perspective C) impression D) impact

A．How high the ants can leap by using their jaws. B．How quickly the trap-jaw ants can move on the ground. C．How wonderfully the springy system in the trap-jaw ants" jaws works. D．How quickly the trap-jaw ants can grab food or enemies.

Sharks do not have bones, and a shark has an extremely good sense of smell. It can find. small amounts of substances in the water, such as blood, body liquids and chemicals produced by animals. Sharks also sense electrical and magnetic power linked to nerves and muscles of living animals. These powerful senses help them find their fond. Some sharks will eat just about anything. Many unusual things have been found in the stomachs of some large sharks. They include shoes, dogs, a cow's foot and metal protective clothing. About forty percent of the different kinds of sharks lay eggs. The others give birth to live young. Some sharks carry their young inside their bodies like humans do. Scientists are beginning to understand the importance of sharks to humans. Medical researchers want to learn more about the shark's body defense system against disease. They know that sharks recover quickly from injuries. Sharks appear never to suffer infections, cancer or heart diseases. What is this passage mainly about？ A．The necessity of protecting sharks. B．The living environment of sharks. C．The dangers of sharks to human beings. D．An introduction to sharks.

A．Not until…have B．Until…did C．Not until…do D．Until…have

Scientists have discovered a genetic defect that appears to cause deficit-hyperactivity disorder, more commonly known as hyperactivity. People afflicted with this disorder have trouble focusing their attention and controlling impulses, and tend to be rest-less and aggressive. The defect occurs in a gene that regulates the body's use of the thyroid hormone. This finding was made in continuing study organized by the National Institute of Diabetes and Digestive and Kidney Diseases in which 70 percent of children inheriting the gene were hyperactive while only 20 percent of the children not inheriting the gene were hyperactive. And although the researchers admit that this defective gene probably accounts for only a fraction of cases of hyperactivity, this discovery will allow doctors to spot newborn babies likely to have the disorder, and also to provide clues for its cause and treatment.

A．在解决问题时，科学家比物理学家还要有更大的阻力。 B．为了解决问题，社会学家同物理学家一起遇到了相当大的阻力。 C．在探索如何解决他们的问题时，社会科学家比物理学家有了更伟大的发现。 D．说到解决问题，社会学家比物理学家遇到的阻力更大。

A．a lack of food B．calcium deposits C．a body chemical D．a lack of water

A.if the Gardeners"argument was sound B.because she was cleverer than other chimps C.when she wanted to eat D.while she was at a research center in Ellensburg E.because she could use sign language to ask for fruits F.while Washoe was learning sign language

A.has seldom been accompanied by climatic changes B.has exerted little influence on climatic changes C.has largely been effected by climatic changes D.has had a major impact on climatic changes

How should we get（8）of such waste material in such a way（9）it will not harm the（10）？ Where can we（11）distribute it？ One idea is to put this radioactive waste inside a thick container, which is（12）dropped to the deep bottom of the ocean.（13）some scientists believe that this way of（14）nuclear waste could kill fish and other living things in the oceans or interfere（15）their growth. Another way to（16）nuclear waste is to send it into space, to the sun,（17）it would be burned. Other scientists suggest that this polluting material be（18）thousands of meters under the earth’s surface. Such underground areas must be free（19）possible earthquakes. Advances are being made. But it may still be many years（20）this problem could be finally settled. 1. A .Moreover B However C Therefore D Otherwise 2. A .on B. with C. to D. in 3. A. incline B. start C. tend D. keep 4. A .drained B. dumped C. discharged D. disposed 5. A .dealt B. handled C. coped D. processed 6. A .drops off B. gives off C. leaves off D. sets off 7. A .efficient B. unfavorable C. deadly D. painful 8. A. touch B. hold C. grasp D. rid 9. A. so B. which C. that D. thus 10. A. environment B. situation C. location D. residence 11. A .reasonably B. rationally C. regularly D. safely 12. A .then B. even C. ever D. only 13. A .And B. But C. Still D. Thereby 14. A. scattering B. preserving C. containing D. discarding 15. A. in B. with C. against D. at 16. A. remove B. deliver C. transport D. spread 17. A. where B. when C. there D. while 18. A. covered B. deposited C. buried D. reserved 19. A. from B.of C. for D. about 20. A. until B. after C. before D. unless

是 否

A．solving B．exploring C．settling D．handling

A．Delete the diagnosis since the problem has not occurreD B．Keep the diagnosis since the risk factors are still present． C．Modify the nursing diagnosis to Impaired Mobility． D．Demote the nursing diagnosis to a lower priority．

A．a way to lose fat B．a nervous habit annoying the people around C．a better kind of exercise than slow running D．a habit of thin people