单选题So far, the police can only ______ on the possible motives for the killing.

单选题The single business of Henry Thoreau, during forty-odd years of eager activity, was to discover all economy calculated to provide a satisfying life. His one concern, which gave to his ramblings in Concord fields a value of high adventure, was to explore the true meaning of wealth. As he understood the problems of economics, there were three possible solutions open to him, to exploit himself, to exploit his fellows, or to reduce the problem to its lowest denominator. The first was quite impossible--to imprison oneself in a treadmill when the morning called to great adventure. To exploit one's fellows seemed to Thoreau's sensitive social conscience an even greater infidelity. Freedom with abstinence seemed to him better than serfdom with material well-being, and he was content to move to Walden Pond and set about the high business of living, "to front only the essential facts of life and to see what it had to teach." He did not advocate that other men should build cabins and live isolated. He had no wish to dogmatize concernig the best mode of living--each must settle that for himself. But that a satisfying life should be lived, he was virtually concerned. The story of his emancipation from the lower economics is the one romance of his life, and Walden is his great book. It is a book in praise of life rather than of Nature, a record of calculating economies that studied saving in order to spend more largely. But it is a book of social criticism as well, in spite of its explicit denial of such a purpose. In considering the true nature of economy he concluded, with Ruskin, that the cost of a thing is the amount of life which is required in exchange for it, immediatey or in the long run. In Walden Thoreau elaborated the text: "The only wealth is life.\

单选题Charles Ⅱ was another monarch ______ maligned by Victorian historians. A. much B. very C. greatly D. deeply

单选题Our times seem especially______to bad ideas, probably because in throwing off the shackles of tradition, we have ended up being quite vulnerable to untested theories and untried remedies.

单选题{{B}}Text 4{{/B}} Placing a human being behind the wheel of an automobile often has the same curious effect as cutting certain fibres in the brain. The result in either case is more primitive behaviour. Hostile feelings are apt to be expressed in an aggressive way. The same man who will step aside for a stranger at a doorway will, when behind the wheel, risks an accident trying to beat another motorist through an intersection. The importance of emotional factors in automobile accidents is gaining recognition. Doctors and other scientists have concluded that the highway death toll resembles an epidemic and should be investigated as such. Dr Ross A. McFarland, Associate Professor of Industrial Hygiene at the Harvard University School of Public Health, said that accidents "now constitute a greater threat to the safety of large segments of the population than diseases do." Accidents are the leading cause of death between the ages of 1 and 35. About one third of all accidental deaths and one seventh of all accidental injuries are caused by motor vehicles. Based on the present rate of vehicle registration, unless the accident rate is cut in half, one of every 10 persons in the country will be killed or injured in a traffic accident in the next 15 years. Research to find the underlying causes of accidents and to develop ways to detect drivers who are apt to cause them is being conducted at universities and medical centres. Here are some of their findings so far: A man drives as he lives. If he is often in trouble with collection agencies, the courts, and police, chances are he will have repeated automobile accidents. Accident repeaters usually are egocentric, exhibitionistic, resentful of authority, impulsive, and lacking in social responsibility. As group, they can be classified as borderline psychopathic personalities, according to Dr. McFarland. The suspicion, however, that accident repeaters could be detected in advance by screening out persons with more hostile impulses is false. A study at the University of Colorado showed that there were just as many overly hostile persons among those who had no accidents as among those with repeated accidents. Psychologists currently are studying Denver high school pupils to test the validity of this concept. They are making psychological evaluations of the pupils to see whether subsequent driving records will bear out their thesis.

单选题The author tells a story about himself to illustrate that______.

单选题Exercise cart affect our outlook on life, and it can also help us get rid of tension, anxiety and frustration. So we should take exercise ______. A. regularly B. normally C. usually D. constantly

单选题Which of the following will not be used by air passengers to access Connexion?

单选题Hunting is thought to be______for the extinction of some wildlife.

单选题She had stomach trouble and had to follow a strict______prescribed by the doctor.

单选题This road is ______ to flood in summer, so it is necessary for us to build a reservoir during the drought. A. liable B. conducive C. susceptible D. prescriptive

单选题______ when he discovered the costs, nevertheless, eventually, he went.

单选题She's fainted. Throw some water on her face and she may soon ______ .

单选题She got used to his manner of speaking soon.