Reading for Understanding Three #48C

Thelma Thurstone The McGraw-Hill Companies, Inc.

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  1. Scientists have found both good and bad uses for nuclear energy. Our main source of power when coal and oil are exhausted will probably be atomic power plants. There is, on the other hand, the danger that thermoncuclear weapons will almost certainly be used in future wars. There are a few people who blame the scientists for the possibility of world destruction and who feel that the discovery of nuclear energy has been
  2. Your answer:
    scientifically important.
    understood by few.
    subject to international control.
    morally wrong.

  3. No one can have everything. Even the most talented and the richest are limited by time; when they choose to have or to do one thing, they
  4. Your answer:
    choose wisely.
    gain unexpectedly.
    lose freedom of choice.
    give up another.

  5. Sociologists differentiate social groups according to various bases of classification, depending upon their purposes in talking about these groups. In any mode of classification, there is usually a certain unavoidable arbitrariness in placing a group in one subclass or another. Oversimplification is necessary for conceptual clarity although in actual fact the complexity of social structure is such that many groups
  6. Your answer:
    serve no useful social function.
    overlap several classificatory categories.
    are organized along autocratic lines.
    include a vast number of members.

  7. When the supply of workers is high, wages are low; when there is a scarcity of workers, wages tend to rise. During the latter half of the nineteenth century, many industrialists welcomed the influx of immigrants into this country. The immigration furnished workers who overcrowded the pool of workers, providing the industrialists with
  8. Your answer:
    highly skilled workers.
    a wider market.
    nonunion employees.
    a financial saving.

  9. Despite the concentration of wealth in U.S. cities, they are sometimes compelled to request financial help from the federal government to meet the costs of increasing services demanded by their citizens. This federal subsidy is sometimes necessary because city tax sources are confined within the city, and too heavy city taxation tends to drive business out of the city, but federal tax sources are
  10. Your answer:

  11. Beliefs, together with those who hold them, are modified little by little in successive generations, and as the modifications that are successive generations of the holders undergo do not destroy the original type, but only disguise and refine it, so the accompanying alterations of belief, however much they purify, retain the essence of the
  12. Your answer:
    original belief.
    succeeding generation.
    original holders.

  13. Opportunity is the only thing we may hand out generously to young people without danger. Even this is frequently not ours to give, nor is it always found in the universities. Opportunities must be sought diligently and often must even be
  14. Your answer:

  15. When colonists first came to North America, a vast and unconquered continent lay before them. Nothing had ever been done in the way of harnessing waterpower, building cities, and extracting minerals. In order to achieve a high level of production, the settlers found it imperative to develop work-saving devices. For these reasons, we can say that in colonial North America
  16. Your answer:
    the states, as great engines, moved slowly.
    necessity was often the mother of invention.
    science had to wait its turn.
    brawn was more valuable than brains.

  17. The squid is a sea animal that propels itself backward through the water by forcing spurts of water through a tube near its head. This method of producing movement is similar to the principle used in
  18. Your answer:
    jet aircraft.

  19. The composition of air is maintained relatively constant because of certain changes that tend to balance one another. During the respiratory process of animals, oxygen is taken from the air and carbon dioxide is released. With the combustion of fuels and the decay of organic matter, large quantities of carbon dioxide are also added at the same time that oxygen is removed. Plants require carbon dioxide from the air for their manufacture of starch, sugar and cellulose. As a by-product of these changes, oxygen is released. The effects of animal respiration are often balanced by the effects of
  20. Your answer:
    combusiton of fuels.
    plant life.
    organic decay.
    changes in the air.

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