填空题Even those top achievers who had left their field said they had maintained a feeling of pride in

填空题The author suggests making severe regulations to prevent oil tankers from dumping oil into the sea.

填空题___________ as certain gases in the atmosphere trap energy is called greenhouse effect.

填空题What makes most car buyers nervous is that they know they have to_____________.

填空题History will prove us _______________________________ (作出这样的抉择是对的).

填空题The ______ of California grey whale is about sixty years.

填空题_____________________(受邀做演讲)in the Logistics Forum, I will start making preparations tomorrow morning.

填空题Throughout history the basic unit of almost every human society has been the family. Members of a family live together under the same roof, and they share the economic 1 of life as well as its affectionate joys. It is the family that has 2 responsibility for the important task of raising children to adulthood. The family is not a uniform 3 in all societies. In many places it is an extended group that includes uncles, aunts, cousins and in-laws. The head of the family usually has 4 influence in arranging marriages, selecting careers and determining all the important moves and purchases by any member of the family. Particularly where the society or the state does not give aid and where 5 the responsibilities of the family are greater, this larger group provides better protection in times of economic crises or other 6 . In many other societies, including most industrialized ones, the "nuclear family" is the basic social unit. This term 7 a husband and wife united through marriage and their 8 children, whether natural or adopted. Industrialization and urbanization create many specialized jobs which 9 scatter family members among different employers and thus to separate residences as soon as they become wage earners. The small family, with one or perhaps two incomes, is better able to 10 rapid change and to move when jobs move.

填空题The geographical location of a country and its physical characteristics are very important to its development and 1 . The United States is very 2 in this 3 . First of all, it has a good 4 . In almost all 5 of the country it is possible to live 6 during the whole year. It is true that in the south it sometimes gets very hot, and in the north very cold. But the people who live in these regions become 7 to the climate and never 8 very much when the weather is either very hot or very cold. In a large country there is usually 9 different physical characteristics. In the United States, there are wide plains and high mountains, thousands of lakes and rivers of all sizes, cool forests and hot deserts, and a coastline several thousand miles long. The many lakes and rivers, as well as the long coastline, have been of great importance to the development of the country, since they made possible 10 of people and all the things people need. Transportation by water is still necessary and important. In modem times, however, trains, automobiles, trucks and airplanes are doing much of the work which was formerly done by ships and boats.

填空题Some people feel lonely from time to time, while others not.

填空题But for the assistance from the government，______(这家公司可能已经在经济危机中倒闭了)．

填空题It is clear that some chemicals can damage the health of animals and humans. However, this is not the only problem that (26) the careless use of chemicals. Chemicals can also disturb the ecological balance of the environment. If the ecological balance is disturbed, the (27) can be extremely serious. The history of DDT (28) the problem. DDT, a chemical which kills insects, at first seemed to be a perfect answer to many problems. It would control insects that made billions of dollars of damage to crops every year. Farmers in many countries began to (29) DDT on their crops as governments permitted and encouraged its use. The (30) were good: damage to crops went down and profits went up. However, the chemical had effects which the scientists (31) First, it also killed insect which were the natural enemies of the harmful insects and which were therefore (32) to farmers. Second, and perhaps worse, DDT did not kill every harmful insect. A few insects had natural (33) to the chemical. They survived and (34) . In a few years there were large numbers of insects which were not affected by DDT, and there were fewer insects which could act as natural controls on those new "super-insects". Finally, it became clear that DDT was not solving the insect problem. In fact, it was making the problem worse. It then became necessary to find (35) for the effects of the first.