单选题We shall never be able to ______ ourselves truly unless we are working for the welfare of our fellows.

单选题Mosquitoes are only means of ______ of malari

单选题Which of the following can be the best title for the passage?

单选题Their air of cheerful self-sacrifice and endless complaisance won them undeserved praise, for their seeming gallantry was wholly motivated by a ______ wish to avoid confict of any sort.

单选题A series of border incidents {{U}}inevitably{{/U}} led the two countries to war.

单选题Everything we eat and drink contains some salt; we can meet the body's need for it from natural sources without turning______the salt bottle.

单选题When she ______, she could not for a moment recognize her surroundings. A. came to B. came off C. came through D. came over

单选题Although I know that many of you think the opposite, most human beings have a high level of intelligence, a good memory and can solve problems easily. They live longer and therefore tend to be much more aware of past and future than we are. They communicate by a set of sounds which carry meaning from the order in which they are placed, and which vary from territory to territory, so that some humans find difficulty in communicating with others according to where they come from--if they have been raised in different country and have not had special training. Humans have also invented a set of marks on paper which they use to represent these sounds and which you may often see them concentrating on. In these two ways they have developed their eyes and ears to a higher level of interpretation than ourselves, but in doing so they have lost the ability to gather much of the information which we continually do both from these and our other senses. Most dogs are able to interpret at least part of the vocabulary (voice meanings) of humans, and some of us have learned to recognize some of the pattern of marks which they use to record them on paper so that humans at a different time and in a different place can understand their messages, but it would put our other abilities into danger if we ourselves developed these skills very far. Fortunately, most humans are able to understand a similar amount of our communicatory sounds and behaviour. Try going up to a human, sitting down in front of him and raising a front paw in a gesture. He will almost certainly take it and give it a shake, because it is a greeting gesture for humans, too. He will think you are behaving like a human--and nothing seems to please humans more. Careful, there is a danger here! You are not a human. You are a dog--and if you are going to be happy you should never forget it. You need to live as a dog. It is all very well changing yourself slightly-to fit in with a human pack, but if you deny your true nature you are going to end up a mad dog and, humans will think, a bad dog. There is always a reason for any animal choosing to live with an animal of a different sort, but all too often we have no choice. We have to live with humans. But humans have consciously decided that they want us with them, although not necessarily for the reason that they believe. They may want you as a watchdog to keep burglars away. They may have some idea that looking after you will teach their pups a sense of responsibility. Or they may simply be in desperate need of companionship, of something to love.

单选题4 As children get older, self-discipline should take the place of imposed discipline. Con strains become internalized and children begin to weigh from within the validity of their promptings (敦促) . But their tendency to be self-critical, to develop a code of their own, depends on the extent to which they must have kept critical company. The dialogue within reflects the dialogue without that is why discussion is so important during adolescence. Those in authority over children will, therefore, attempt to get children to do what is sen sible by appealing to their common sense instead of ordering them around or appealing to their own status. They will not say, "I'm your father and I'm telling you not to smoke," but will point out the dangers involved. It is a further question, however, whether a child's acceptance of good reasons should be the criterion for his action. If a parent explains to a child why it is stupid and wrong to put objects on railway lines, and yet sees him do ing so, will he stand aside and reflect that the boy is learning to choose? Parents must weigh their own fundamental principles against what is instructive for their children. Example, of course, is crucial. Parents and others must provide a pattern out of which the child can eventually develop his own style of self-regulation. This is not likely to happen unless exercise of authority is rationalized and sensitively adapted to age, to per sons, and to the tasks in hand. For the young will tightly rebel against the irrational ex pression of a traditional status. In brief, teachers and parents must learn to be in authority without being authoritarian.

单选题The low-lying areas refer to those regions that ______.

单选题In the southwestern part of the United States ______ built in the last century.

单选题Sudden disastrous external stress such as in severe automobile accidents, airplane crashes, and underwater explosions may cause death through rupture of the major arteries.

单选题The necessity of establishing discrete categories for observations frequently leads to attempts to make absolute ______ when there are in reality only

单选题He is constantly late, and ill-prepared when he does finally arrive. He is jeopardizing his future.

单选题The idea of building "New Towns" to absorb growth is frequently considered a cure-all for urban problems. It is erroneously assumed that if new residents can be diverted from existing centers, the present urban situation at least will get no worse. It is further and equally erroneously assumed that since European New Towns have been financially and socially successful, we can expect the same sorts of results in the United States. Present planning, thinking, and legislation will not produce the kinds of New Town that have been successful abroad. It will multiply suburbs or encourage developments in areas where land is cheap and construction profitable rather than where New Towns are genuinely needed. Such ill-considered projects not only will fail to relieve pressures on existing cities but will, in fact, tend to weaken those cities further by drawing away high-income citizens and increasing the concentration of low-income groups that are unable to provide tax revenues. The remaining taxpayers, accordingly, will face increasing burdens, and industry and commerce will seek escape. Unfortunately, this mechanism is already at work in some metropolitan areas. The promoters of New Towns so far in the United States have been developers, builders, and financial institutions. The main interest of these promoters is economic gain. Furthermore, federal regulations designed to promote the New Town idea do not consider social needs as the European New Town plans do. In fact, our regulations specify virtually all the ingredients of the typical suburban community, with a bit of political rhetoric thrown in. A workable American New Town formula should be established as firmly here as the national formula was in Britain. All possible social and governmental innovations as well as financial factors should be thoroughly considered and accommodated in this policy. Its objectives should be clearly stated, and both incentives and penalties should be provided to ensure that the objectives are pursued. If such a policy is developed, then the New Town approach can play an important role in alleviating America's urban problems.

单选题The sentence given to the criminal was much too ______;murder should carry the maximum penalty.

单选题Since you have failed three of the last four tests, you cannot afford to be ______ about passing for the term.