单选题The most widespread fallacy (谬误) of all is that colds are caused by cold. They are not. They are caused by viruses passage on from person to person. You catch a cold by coming into contact, directly or indirectly, with someone who already has one. If cold causes colds, it would be reasonable to expect the Eskimos to suffer from them permanently. But they do not. And in isolated arctic regions explorers have the outside world by way of packages and mail dropped from airplanes. Arctic explorers may catch colds whenA. they are working in the isolated arctic regions.B. they are writing reports in terribly cold weather.C. they are free from work in the isolated arctic regions.D. they are coming into contact with the outside worl

单选题This reminds me of Ulots of/U things.

单选题We almost (ran into) a Rolls-Royce that pulled out in front of us without signaling.

单选题As members dropped out, the club became smaller and smaller.A. passed awayB. "grewC. changedD. withdrew

单选题They tried to dig up something from the past.A. findB. chooseC. searchD. look for

单选题When Jack eventually overtook the last truck he pulled over to the inside lane. A. skipped B. passed C. reached D. led

单选题The meat tasted so unpleasant that Jane threw it away in {{U}}disgust{{/U}}.

单选题She is under the delusion that I'm going to give her a lot of money.A. hypothesisB. miracleC. conditionD. fallacy

单选题Because the sale of bonds is a convenient means of raising capital, corporations often issue bonds as well as stocks.

单选题It doesn"t stand to mason that he would lie.

单选题They Say Ireland's the Best Ireland is the best place in the world to live in for 2005, according to a life quality ranking that appeared in Britain's Economist magazine last week. The ambitious attempt to compare happiness levels around the world is based on the principle that wealth is not the only measure of human satisfaction and well-being. The index of 111 countries uses data on incomes, health, unemployment, climate, political stability, job security, gender equality as well as what the magazine calls "freedom, family and community life". Despite the bad weather, troubled health service, traffic congestion (拥挤) , gender inequality and the high cost of living. Ireland scored an impressive 8.33 Points out of 10. That put it well ahead of second-place Switzerland, which managed 8.07. Zimbabwe, troubled by political insecurity and hunger, is rated the gloomiest (最差的), picking up only 3.89 points. "Although rising incomes and increased individual choices are highly valued." the report said, "some of the factors associated with modernization such as the breakdown (崩溃) in traditional institutions and family values in part take away from a positive impact." "Ireland wins because it successfully combines the most desirable elements of the new with the preservation of certain warm elements of the old, such as stable family and community life." The magazine admitted measuring quality of life is not a straightforward thing to do, and that its findings would have their critics. No. 2 on the list is Switzerland. The other nations in the top 10 are Norway, Luxembourg, Sweden, Australia, Iceland, Italy, Denmark and Spain. The U.K. is positioned at No. 29, a much lower position chiefly because of the social and family breakdown recorded in official statistics, The U.S., which has the second highest per capita GDP (人均国内生产总值) after Luxembourg, took the 13th place in the survey. China was in the lower half of the league at 60th.

单选题The use of the chemical may present a certain hazard to the laboratory workers.

单选题Tears of {{U}}anguish{{/U}} filled her eyes. A. annoyance B. anger C. distress D. depression

单选题His qualifications surpass the job requirements.

单选题DNA Fingerprinting DNA is the genetic material found within the cell nuclei of all living things. In mammals the strands of DNA are grouped into structures called chromosomes. With the exception of identical siblings (as in identical twins), the complete DNA of each individual is unique. DNA fingerprinting is sometimes called DNA typing. It is a method of identification that compares bits of DNA. A DNA fingerprint is constructed by first drawing out a DNA sample from body tissue or fluid such as hair, blood, or saliva. The sample is then segmented using enzymes, and the segments are arranged by size. The segments are marked with probes and exposed on X-ray film, where they form a pattern of black bars — the DNA fingerprint. If the DNA fingerprints produced from two different samples match, the two samples probably came from the same person. DNA fingerprinting was first developed as an identification technique in 1985. Originally used to detect the presence of genetic diseases, it soon came to be used in criminal investigations and legal affairs. The first criminal conviction based on DNA evidence in the United States occurred in 1988. In criminal investigations, DNA fingerprints derived from evidence collected at the crime scene are compared to the DNA fingerprints of suspects. Generally, courts have accepted the reliability of DNA testing and admitted DNA test results into evidence. However, DNA fingerprinting is controversial in a number of areas: the accuracy of the results, the cost of testing, and the possible misuse of the technique. The accuracy of DNA fingerprinting has been challenged for several reasons. First, because DNA segments rather than complete DNA strands are "fingerprinted" ; a DNA fingerprint may not be unique; large-scale research to confirm the uniqueness of DNA fingerprinting test results has not been conducted. In addition, DNA fingerprinting is often done in private laboratories that may not follow uniform testing standards and quality controls. Also, since human beings must interpret the test, human error could lead to false results. DNA fingerprinting is expensive. Suspects who are unable to provide their own DNA to experts may not be able to successfully defend themselves against charges based on DNA evidence. Widespread use of DNA testing for identification purposes may lead to the establishment of a DNA fingerprint database.

单选题About twenty years ago, all important resources in our country were allocated by the central government.A. nationalizedB. distributedC. speculatedD. appointed

单选题The grasshopper is an insect that can {{U}}leap{{/U}} about twenty times the length of its own body.

单选题They agreed to {{U}}modify{{/U}} their policy. A. clarify B. define C. change D. develop

单选题These are our motives for doing it. A. reasons B. arguments C. targets D. stimuli

单选题Helen and Martin With a thoughtful sigh, Helen turned away from the window and walked back to her favourite armchair. 1 her brother never arrive? For a brief moment, she wondered if she really cared that much. Over the years Helen had given 2 waiting for Martin to take an interest in her. Her feelings for him had gradually 3 until now, as she sat waiting for him, she experienced no more than a sister"s 4 to see what had 5 of her brother. Almost without 6 , Martin had lost, his job with a busy publishing company after spending the last eight years in New York as a key figure in the US office. Somehow the two of them hadn"t 7 to keep in touch and, left alone. Helen had slowly found her 8 in her own judgment growing. 9 the wishes of her parents, she had left university halfway 10 her course and now, to the astonishment of the whole family, she was 11 a fast-growing reputation in the pages of respected art magazines and was actually earning enough to live 12 from her paintings. Of course, she 13 no pleasure in Martin"s sudden misfortune, but she couldn"t 14 looking forward to her brother"s arrival with 15 satisfaction at what she had achieved.