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【阅读训练】公共英语等级考试四级阅读理解(6)

1、The passage mentions all of the following as factors important to the success of a new food crop except the ___.

  • A.practicality of storage of the crop.
  • B.security of the crop yield.
  • C.quality of the crop’s protein.
  • D.cultural acceptability of the crop.

2、The author suggests that, in most emerging countries, extensive government intervention accompanying the introduction of a food innovation will ___.

  • A.usually be sufficient to guarantee the financial success of the innovation.
  • B.be necessary to ensure that the benefits of the innovation will be spread throughout the society.
  • C.normally occur only when the innovation favors large landowners.
  • D.generally cost the country more than will be earned by the innovation.

3、The first paragraph of the passage best supports which of the following statements?

  • A.Too much publicity can harm the chances for the success of a new food innovation.
  • B.Innovations that produce culturally acceptable crops will generally be successful.
  • C.A food-product innovation can be technically feasible and still not be economically viable.
  • D.It is difficult to decide whether a food-product innovation has actually been a success.

4、The author provides a sustained argument to uphold which of the following assertions?

  • A.Profitability is neither necessary nor sufficient for a new technology to be adopted.
  • B.Profitability is the key factor guiding technological change.
  • C.Economic factors and governmental policies strongly influence the ultimate success of any innovation.
  • D.Innovations carrying high rewards for big agribusiness groups harm the poor.

5、The primary purpose of the passage is to discuss the ___.

  • A.means of assessing the extent of the world food shortage.
  • B.difficulties of applying technological solutions to the problem of food shortages.
  • C.costs of introducing a new food technology into a developing country.
  • D.nature of the new technological innovations in the area of food production.

6、The word “paradox” (Line 1, Para. 1) means “_____”.

  • A.implication
  • B.contradiction
  • C.interpretation
  • D.confusion

7、Accroding to the author, we should reverse our classification of the physical sciences as “hard” and the social sciences as “soft” because _______.

  • A.a reverse ordering will help promote the development of the physical sciences
  • B.our knowledge of physical systems is more reliable than that of social systems
  • C.our understanding of the social systems is approximately correct
  • D.we are better able to investigate social phenomena than physical phenomena

8、The author believes that our knowledge of social systems is more secure than that of physical systems because______.

  • A.it is not based on personal experience
  • B.new discoveries are less likely to occur in social sciences
  • C.it is based on a fairly representative quantity of data
  • D.the records of social systems are more reliable

9、The chances of the physical sciences being subject to great changes are the biggest because _____.

  • A.contradictory theories keep emerging all the time
  • B.new information is constantly coming in
  • C.the direction of their development is difficult to predict
  • D.our knowledge of the physical world is inaccurate

10、We know less about the astronomical universe than we don about any social system because ______.

  • A.theories of its origin and history are varied
  • B.our knowledge of it is highly insecure
  • C.only a very small sample of it has been observed
  • D.few scientists are involved in the study of astronomy