Section A Directions: This part is to test your ability to give proper answers to questions. There are 5 recorded questions in it. After each question, there is a pause. The questions will be spoken two times. When you hear a question, you should decide on the correct answer flora the 4 choices marked A), B), C) and D) given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center. May I borrow your dictionary for a minute?()
A. Sure. Here you are.
B. The dictionary is very expensive.
C. The dictionary is very useful.
D. Thank you very much.
查看答案
丁香油
A. 是氧化锌丁香酚水门汀的基质并伴有消毒收敛作用
B.可增加氧化锌丁香酚水门汀的粘附性与韧性
C.可增加氧化锌丁香酚水门汀的强度,促进固化
D.作为氧化锌丁香酚水门汀的另一类基质材料与氧化物反应
E.能加速氧化锌丁香酚水门汀的固化
Serre’s上皮的本质是
A. 残存的牙板上皮
B.缩余釉上皮
C.残存的上皮根鞘
D.釉小皮
E.星网状层
Governments throughout the world act on the assumption that the welfare of their people depends largely on the economic strength and wealth of the community. (61)Under modern coditions, this requires varying measures of centralized control and hence the help of specialized scientists such as economists and operational research experts. (62) Furthermore, it is obvious that the strength of a country’s economy is directly bound up with the efficiency of its agriculture and industry, and that this in turn tests upon the efforts of scientists and technologists of all kinds. It also means that governments are increasingly compelled to interfere in these sectors in order to step up production and ensure that it is utilized to the best advantage. For example, they may encourage research in various ways, including the setting up of their own research centers; they may alter the structure of education, or interfere in order to reduce the wastage of natural resources or tap resources hitherto unexploited; or they may cooperate directly in the growing number of international projects related to science, economics and industry. In any case, all such interventions are heavily dependent on scientific advice and also scientific and technological manpower of all kinds.(63) Owing to the remarkable development in mass-communications, people everywhere are feeling new wants and are being exposed to new customs and ideas, while governments are often forced to introduce still further innovations for the reasons given above. At the same time, the normal rate of social change throughout the world is taking place at a vastly accelerated speed compared with the past. For example, (64)in the early industrialized countries of Europe the process of industrialization--with all the far-reaching changes in social patterns that followed--was spread over nearly a century, whereas nowadays a developing nation may undergo the same process in a decade or so. All this has the effect of building up unusual pressures and tensions within the community and consequently presents serious problems for the governments concerned. (65) Additional social stresses may also occur because of the population explosion or problems arising from mass migration movements--themselves made relatively easy nowadays by modern means of transport. As a result of all these factors, governments are becoming increasingly dependent on biologists and social scientists for planning the appropriate programs and putting them into effect. Furthermore, it is obvious that the strength of a country’s economy is directly bound up with the efficiency of its agriculture and industry, and that this in turn tests upon the efforts of scientists and technologists of all kinds.
In 1921, Franklin Roosevelt took his family sailing one day and he fell overboard into the chilly waters. The next day, a forest fire broke out. Franklin and his children helped to fight the forest fire and put it out. It was hard and tiring work. After the fire was out, Franklin was sick. It was polio. He could not move his legs. The doctors said he could never walk again.Many men would have given up then. Franklin Roosevelt did not give up. He began to work to get well again. Even though he could not get out of bed, he did exercises, and his shoulders and arms grew very strong. At last the doctors let him out of bed, but he had to wear heavy metal braces on his legs. Then he went to Warm Springs, Georgia. He swam in the warm waters there. Even though it was painful to move his legs, he kept on swimming and exercising them. He grew better until he could leave the braces off. He could walk with only a cane to help him."The only thing we have to fear is fear itself, "President Roosevelt told the people. Franklin caught().