It’s easy and inexpensive to set up a domain.

They will be told that no commercial nuclear plant in the United States - and probably in the World-is adequately protected against a well planned armed attack by terrorists, and that there is enough information on public record to guide a nuclear thief not only to the vaults of nuclear plants where plutonium is stored, but also to tell him how the doors of those vaults are designed. The hour-long television programme, "The Plutonium Connection", makes its point by showing how a 20-year-old student of the Massachusetts Institute of Technology in five weeks designed an atomic bomb composed of plutonium and parts from a hardware store. The young man, whose identity is being kept secret for fear he may be kidnapped by terrorists; is quoted as saying: "'I was pretty surprised about how easy it is to design a bomb. When I was working on my design, I kept thinking there's got to be more to it than this, but actually there isn't. It' s simple." The student worked alone, using information he obtained from science libraries open to the public. The television programmes, produced for non-commercial stations across the country by a Boston educational station, shows how quantities of other "secret" information are available to anyone. The Atomic Energy Commission's public reading room in Washington is described by the narrator as "the first place a bomb-designer would visit when he was planning his plutonium theft. On file there and freely available are the plans of every civilian nuclear installation in the country." The programme seems certain to create enormous controversy - not only. over the lack of nuclear safeguards, but also over the morality of commissioning the student to design a bomb and the wisdom of drawing attention to the ways that a nuclear thief can work. Even an Official of Public Broadcasting System, which is distributing the TV programmes, confessed to qualms: "It's a terribly important subject, and people should know about the dangers, but I can't help wondering if the programme won't give someone ideas." "The Plutonium Connection" explains, for example, that the security system of nuclear plants were all designed to prevent sabotage by perhaps one or two agents of some foreign Power. But now this appears less of a hazard than the possibilities of an attack by an armed band of terrorists with dedicated disregard for their own lives. The programme discusses two major plutonium reprocessing plants in the US one already operating in Oklahoma, one being completed in South Carolina - neither of which has more than a handful of armed guards to supplement the alarms, fences and gun-detectors that Government security requires. Both are in such remote areas that it would take at least 45 minutes for a sizable police force to be assembles, if there were an attack. An official of the South Carolina plant - a joint operation of Allied Chemical, Gulf Oil and Royal Dutch Shell - admits to television viewers that the "system we've designed would probably not prevent" a band of about 12 armed terrorists from entering. Pilfering plutonium is even easier, the programme suggests. Despite constant inventories, there are inevitably particles of plutonium unaccounted for about 1 1b. a month at the Oklahoma plant, owned by the Kerr-McGee oil company, which in a year adds up to enough to make an atomic bomb. It is suggested that pilfering would be even easier if instrument technicians were unscrupulous enough to alter their measuring devices. The television film also shows radioactive fuel being transported to nuclear processing plants in com A．during his studies at Massachusetts Institute of Technology. B．from information available on TV programmes. C．from information he found in science libraries. D．at a hardware store.

A、<p>They are especially intelligent</p> B、<p>They are children&#39;s favorite</p> C、<p>They are quite easy to tame</p> D、<p>They are clean and pretty</p>

A．A.normally B．B.merely C．C.hardly D．D.rarely

A．nearly B．hardly C．almost

Few doctors believe any longer that it is simply a question of will power. And for those people that continue to view addicts as merely "weak", recent genetic research may force a rethink. A study conducted by Jacqueline Vink, of the Free University of Amsterdam, used a database called the Netherlands Twin Register to analyze the smoking habits of twins. Her results, published in the Pharmacogenomics Journal, suggest that an individual's degree of nicotine dependence, and even the number of cigarettes he smokes per day, are strongly genetically influenced. The Netherlands Twin Register is a voluntary database that contains details of some 7,000 pairs of adult twins (aged between 15 and 70) and 28,000 pairs of childhood twins. Such databases are prized by geneticists because they allow the comparison of identical twins (who share all their genes) with fraternal twins (who share half). In this case, however, Dr. Vink did not make use of that fact. For her, the database was merely a convenient repository of information. Instead of comparing identical and fraternal twins, she concentrated on the adult fraternal twins, most of whom had completed questionnaires about their habits, including smoking, and 536 of whom had given DNA samples to the register. The human genome is huge. It consists of billions of DNA "letters", some of which can be strung together to make sense (the genes) but many of which have either no function, or an unknown function, To follow what is going on, geneticists rely on markers they have identified within the genome. These are places where the genetic letters may vary between individuals. If a particular variant is routinely associated with a particular physical feature or a behavior. pattern, it suggests that a particular version of a nearby gene is influencing that feature or behavior. Dr. Vink found four markers which seemed to be associated with smoking. They were on chromosomes 3, 6, 10 and 14, suggesting that at least four genes are involved. Dr. Vink hopes that finding genes responsible for nicotine dependence will make it possible to identify the causes of such dependence. That will help to classify smokers better (some are social smokers while others are physically addicted) and thus enable "quitting" programs to be customized. Results such as Dr. Vink's must be interpreted with care. Association studies, as such projects are known, have a disturbing habit of disappearing, as it were, in a puff of smoke when someone tries to replicate them. But if Dr. Vink really has exposed a genetic link with addiction, then Mark Twain's problem may eventually become a thing of the past. Mark Twain is mentioned in the passage in order to show that A．he is a man with very Strong will power. B．it is easy to give up smoking temporarily. C．famous writers are often heavy smokers. D．only few people have his determination.

A．She'll type the letter for the man. B．She'll teach the man to operate the computer. C．She doesn't think his sister is a good typist. D．She thinks the man should buy a computer.

Since 1945, the entire literary picture has changed. Fiction of ail kinds, but above all the short story, has become more and more uneconomic to publish. Many magazines have gone out of business. As a type, the "man of letters", puffing a pipe, has almost vanished, to be replaced by the university lecturer or the television scriptwriter. The public is not attracted by imaginary plots in books but prefers the actual, the real story of real people. For those who do not read at all, television provides an enticing alternative. Such a decline is in many ways a sad one because the old-time short story had a human quality about it which is now eroded. Yet, in an odd way, in our chaotic electronic age, the short story still has a prospect of living. It has been discovered by film scriptwriters that the form. of the short story provides a useful structure for television; it readily provides the basis for a one-hour programme. The best title for this passage is ______. A．The Short Story and Television B．The Short Story and the Public C．The Short Story: Past and Present D．The Short Story: Form. and Content

Down-to-earth persons may be【34】______members of society, of course. But they do not let their importance "【35】______to their heads". They do not consider themselves to be better persons than【36】______of less importance. Someone who is filled with his own importance and pride, 【37】______without cause, is said to have "his nose in the air". There is【38】______way a person with his nose in the air can be down-to-earth. Americans【39】______another expression that means almost the same as " down-to-earth". The expression is " both-feet-on-the-ground". Someone【40】______both-feet-on-the-ground is a person with a good understanding【41】______reality. He has what is called "common sense, " he may have dreams, 【42】______he does not allow them to block his knowledge of【43】______is real. The opposite kind of【44】______is one who has his " head-in-the-clouds". A man with his head-in-the-clouds is a dreamer【45】______mind is not in the real world. 【46】______, such a dreamer can be brought back to earth. Sharp words from teacher can usually【47】______a day-dreaming student down-to-earth. Usually, the person who is down-to-earth is very【48】______ to have both feet on the ground.【49】______we have both our feet on the ground, when we are down-to-earth, we act honestly and openly【50】______others. Our lives are like the ground below us, solid and strong. (31)

对 错

对 错

A．A.far from B．B.far more C．C.much more