单选题The search for latent prints is done in a systematic and intelligent manner. Investigators develop techniques to locate traces of fingerprints at a crime scene. The basic premise in searching for latent prints is to examine more carefully those areas, which would most likely be touched by persons who have been on the scene. The natural manner in which a person would use and place his hands in making an entrance or exit from a building or in handling any object is the key to the discovery of latent prints. Where a forced entrance has been made, latent prints are likely to be found on any surface adjacent to or at that point. Any object with a smooth, non-porous surface is likely to retain latent prints if touched. Fingerprints on rough surfaces are usually of little value. If the fingermark does not disclose ridge detail when viewed under a reading glass, the chances are that its value in identification is nil when photographed. Where fingermarks are found, it will be necessary for the investigator to compare them against the ones of persons having legitimate access to the premises so that the traces might be eliminated as having evidentiary value if they prove to be from these persons. Places to search for prints on an automobile are the rear view mirror, steering wheel hub, steering column, windshield dashboard and the like. Dusting of surface may be done with a fine brush or with an atomizer. The whit powders used are basically finely powdered white lead, talc, or chalk. Another light powder is basically Chemist's gray. A good black powder is composed of lampblack, graphite, and powdered acacia. Dragon's blood is good powder for white surface and can be fixed on paper by heating. In developing latent prints, the accepted method is to use the powder sparingly and brush lightly. Do not use powder if the fingermark is visible under oblique lighting. It can be photographed. A good policy for the novice is to experiment with his own prints on a surface similar to the one he wishes to search in order to determine the powder best suited to the surface. Fingerprints after dusting may be lifted by using fresh cellulose tape or commercially prepared material especially designed to lift and transfer dusted latent fingerprints. In addition to latent prints, the investigator must not overlook the possibility of two other types of fingerprint traces: molded impression and visible impression. Molded impressions are formed by the pressure of the finger upon comparatively soft, pliable, or plastic surfaces producing an actual mold of the fingerprint pattern. These can be recorded by photograph without treating the surface, is usually most effective in revealing the impressions clearly. Visible impressions are formed when the finger is covered with some substance which is transferred to the surface contacted. Fingers smeared with blood, grease, dirt, paint, and the like will leave a visible impression. If these impressions are clear and sharp, they are photographed under light without any treatment. Ordinarily, prints of this type are blurred or smeared and do not contain enough detail for identification by comparison. However, they can not be overlooked or brushed aside without first being examined carefully.

单选题It happened in the late fall of 1939 when, after a Nazi submarine had penetrated the British sea defense around the Firth of Forth and damaged a British cruiser, Reston and a colleague contrived to get the news past British censorship. They cabled a series of seemingly harmless sentences to The Times"s editors in New York, having first sent a message instructing the editors to regard only the last word of each sentence. Thus they were able to convey enough words to spell out the story. The fact that the news of the submarine attack was printed in New York before it had appeared in the British press sparked a big controversy that led to an investigation by Scotland Yard and British Military Intelligence. But it took the investigators eight weeks to decipher The Times"s reporters" code, an embarrassingly slow bit of detective work, and when it was finally solved the incident had given the story very prominent play, later expressed dismay that the reporters had risked so much for so little. And the incident left Reston deeply distressed. It was so out of character for him to have. become involved in such a thing. The tactics were questionable and, though the United States was not yet in the war, Britain was already established as America"s close ally and breaking British censorship seemed both an irresponsible and unpatriotic thing to do.

单选题The government is to ban payments to witnesses by newspapers seeking to buy up people involved in prominent cases (21) the trial of Rosemary West. In a significant (22) of legal controls over the press, Lord Irvine, the Lord Chancellor, will introduce a (23) bill that will propose making payments to witnesses (24) and will strictly control the amount of (25) that can be given to a case (26) a trial begins In a letter to Gerald Kaufman, chairman of the House of Commons media select committee. Lord Irvine said he (27) with a committee report this year which said that self regulation did not (28) sufficient control. (29) of the letter came two days after Lord Irvine caused a (30) of media protest when he said the (31) of privacy controls contained in European legislation would be left to judges (32) to Parliament. The Lord Chancellor said introduction of the Human Rights Bill, which (33) the European Convention on Human Rights legally (34) in Britain, laid down that everybody was (35) to privacy and that public figures could go to court to protect themselves and their families.

单选题Furthermore, the campaign itself was {{U}}lavishly{{/U}} financed, with plenty of money for top-flight staff, travel, and television commercials.

单选题She's beginning to recover now and taking a little ______.

单选题In ancient mythology there were no impassable ______ separating the divine from the human beings.

单选题We must admit that the young man is highly______ in teaching English.

单选题The charitable acts of their boss used to be greatly praised by the people. However, ruthless company downsizing drives and continued layoffs, coupled with rising pay for top managers, have made him look a good deal less ______

单选题To punish those who violate the family-planning policy the Chinese government does which of the following7

单选题Over the years, Jimmy Connors ______ phenomenal displays of tennis and temper—and at the U.S. Open last week, he exhibited both again.

单选题What new research reveals about the adolescent brain—from why kids bully to how the teen years shape the rest of your life. They say you never escape high school. And for better or worse, science is lending some credibility to that old saw. Thanks to sophisticated imaging technology and a raft of longitudinal studies, we're learning that the teen years are a period of crucial brain development subject to a host of environmental and genetic factors. This emerging research sheds light not only on why teenagers act the way they do, but how the experiences of adolescence—from rejection to binge drinking—can affect who we become as adults, how we handle stress, and the way we bond with others. One of the most important discoveries in this area of study, says Dr. Frances Jensen, a neuroscientist at Harvard, is that our brains are not finished maturing by adolescence, as was previously thought. Adolescent brains "are only about 80 percent of the way to maturity," she said at the annual meeting of the Society for Neuroscience in November. It takes until the mid-20s, and possibly later, for a brain to become fully developed. An excess of gray matter (the stuff that does the processing) at the beginning of adolescence makes us particularly brilliant at learning—the reason we're so good at picking up new languages starting in early childhood—but also particularly sensitive to the influences of our environment, both emotional and physical. Our brains, processing centers haven't been fully linked yet, particularly the parts responsible for helping to check our impulses and considering the long-term repercussions of our actions. "It's like a brain that's all revved up not knowing where it needs to go," says Jensen. It's partially because of this developmental timeline that a teen can be so quick to conjure a stinging remark, or a biting insult, and so uninhibited in firing it off at the nearest unfortunate target—a former friend, perhaps, or a bewildered parent. The impulse to hurl an insult is there, just as it may be for an adult in a stressful situation, but the brain regions that an adult might rely on to stop himself from saying something cruel just haven't caught up. In a paper published last year in the Journal of the American Academy of Child & Adolescent Psychiatry, Dr. Jay Giedd, a scientist at the Child Psychiatry Branch of the National Institutes of Mental Health, wrote that, according to brain scans conducted over several years, gray-matter volume peaks around or just before the beginning of puberty, and then continuously declines. In contrast, white matter (the stuff that helps connect areas of the brain) increases right up to, and beyond, the end of puberty. These adolescent brain developments don't happen to all parts of the brain at the same time. "The order in which this maturation of connection goes, is from the back of the brain to the front of the brain," says Jensen. And one of the last parts to mature is the frontal lobe, a large area responsible for modulating reward, planning, impulsiveness, attention, acceptable social behavior, and other roles that are known as executive functions. It's thanks in part to the frontal lobe that we are able to schedule our time with any sort of efficiency, plan in advance to arrange for a designated driver on a night out (or stop drinking before one is over the legal limit), and restrain ourselves from getting into fights any time we get involved in an argument. Unfortunately, it's just these sorts of behaviors that teenage brains are not fully endowed to deal with—and the consequences are potentially fatal when it comes to high-risk behavior like drinking and driving. This blast of teen-brain change is compounded by profound social and psychological shifts. Of particular importance is that adolescence is the time when we develop stronger social connections with our peers, and more independence from our parents. "Before the transition to adolescence, kids interact with one another, and the kinds of friendships that they have, are substantially different," explains Dr. Mitch Prinstein, professor and director of clinical psychology, at the University of North Carolina, Chapel Hill. "After adolescence they can really confide in friends, they turn to them as first sources of social support. Kids tell us all the time they are more likely to tell their friends about things going on in their lives, and stressors, than any adult. " This cuts both ways. Healthy relationships have a positive effect on how an adolescent navigates through a tumultuous period of life. But at the same time, this reliance on friends makes young people susceptible to the influence of peer pressure, even when it is indirect.

单选题College Board President Gaston Caperton trumpeted rising SAT math scores and bemoaned ______verbal scores last week.

单选题The word "overwhelming" in Line 1 Par

单选题Microwaves are a type of electromagnetic radiation; they are a very mild form of electrical or magnetic wave that moves through space. Unlike X-rays and gamma rays, which are very powerful rays of radiation, microwaves are rather weak and are much more like the waves of radiation used in radio broadcasting. In microwave ovens, the use of microwaves with which most people me familiar, the waves are produced by an electronic tube called a magnetron. Microwaves produce heat in any food placed inside the oven by causing the water in the food to vibrate rapidly and thus heat up. Food that have more water in them take less time to cook and probably have more of their nutrients left intact when cooked in a microwave oven. Microwaves do not pass through metal, so the microwaves are retained within the oven. Microwaves pass immediately through glass, paper, and plastic with no effect on these materials or on the microwaves; nothing inside the microwave oven is heated except the food itself, so cooking process is much more efficient than in conventional ovens. Sometimes a pan or container is heated because it is touching the hot food, though: some users of microwave oven have been burned by but food, by hot pans, or steam escaping from the food. No documented case of radiation burns born a microwave oven has ever been reported. Actually, we know very little about how microwave radiation might affect human beings. Obviously, if microwave can cook a roast by exciting the water molecules in the meat, they could do the same thing to human flesh. Human being could be burned by prolonged exposure to high levels of microwaves. But scientists are more concerned about the effects of low level microwave exposures, such as might result from a leaking microwave oven. No research has yet been performed on people who have been exposed to low level microwave radiation. Some experiments have been performed on animals, but the results are very difficult to interpret. As the eyes are particularly sensitive, rabbits exposed to low level microwaves were checked for the growth of cataracts, and none were found. On the other hand, some animals seem able to sense microwave radiation and try to escape from it immediately. In others, microwave radiation causes the body to react as if defending itself against a decease. These responses lead some scientists to think that microwave radiation is harmful, though in some yet undiscovered way.

单选题Babies might mistrust the world if ______.

单选题Although many people speak English, they don"t pronounce it or spell the word they use the same way. The United States, in 1 , has its own special way of pronouncing and spelling the English language. They speak American English, and they 2 a lot of its special character to one man: Noah Webster. Noah Webster was born in Connecticut in 1758. He 3 during a period of great American patriotism. He graduated from Yale University when he was 20. The 4 of the American Revolution brought independence to the United States, but political 5 didn"t satisfy Webster. He wanted to 6 "the King"s English" and replace it 7 a special American Language. In 1783, Webster published a textbook called The American spelling Book. It was used by generation after 8 of American school children. Because the book had a blue back, it becomes famous 9 "the blue-backed speller". Webster also 10 a dictionary. It too, became very 11 and was updated and reprinted many times. 12 are, when you are confused with a word, you"ll 13 the word in a new edition of Noah Webster"s book. In his books, Webster made many changes in the English used in the United States. He suggested new ways to 14 and spell English words. He also added new American words 15 the language. Webster made many other changes, most of 16 American use today. However, Webster did not go 17 his friend Benjamin Franklin wanted him to. Franklin wanted to drop all the silent letters from words; he also wanted to change the spelling of many words. Had Franklin written the dictionary 18 Webster, he 19 spell give [giv], and wrong [rong]. Franklin really wanted to give us our own mother tongue, but we would have 20 it wrong!

单选题Research should continue on controlled nuclear fusion, but no energy program should be {{U}}premised{{/U}} on its existence until it has proved practical.

单选题I would like to get another table like this one, but the company that made it is out of ______. A. order B. business C. practice D. style

单选题New vehicles must ______ with certain standards for environmental protection.

单选题Since the early 1930s, Swiss banks had prided themselves on their system of banking secrecy and numbered accounts Over the years, they had successfully【C1】______every challenge to this system by their own government who,【C2】______, had been frequently urged by foreign governments to reveal information about the financial affairs of certain account【C3】______The result of this policy of secrecy was【C4】______a kind of mystique had grown up around Swiss banking. There was a widely-held belief that Switzerland was【C5】______to wealthy foreigners, mainly because of its numbered accounts and bankers' reluctance to ask awkward questions【C6】______depositors.【C7】______to the mystique was the view that if this secrecy was ever given up, foreigners would fall over themselves in the rush to【C8】______money, and the Swiss banking system would virtually collapse overnight. To many,【C9】______, it came like a bolt out of the【C10】______, when, in 1977, the Swiss banks announced they had signed a【C11】______with the Swiss National Bank(the Central Bank). The aim of the agreement was【C12】______the improper use of the country's bank secrecy laws, and its【C13】______was to curb severely the system of secrecy. The rules which the banks had agreed to observe【C14】______the opening of numbered accounts subject to much closer【C15】______than before. The banks would be required, if necessary, to【C16】______the origin of foreign funds going into numbered and other accounts. The idea was to stop such accounts being used for【C17】______purposes. Also, they agreed not to accept funds resulting from tax【C18】______or from crime. The pact represented essentially a tightening up of banking rules.【C19】______the banks agreed to end relations with clients whose identities were unclear or who were performing improper acts, they were still not obliged to inform【C20】______a client to anyone, including the Swiss government. To some extent, therefore, the principle of secrecy had been maintained.