By saying that“the problems of mechanizing some areas are not only cultural in nature，the author means _____ .

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• 1In the tropical areas， _____ .

  A.mechanization is not yet used in agriculture

  B.agriculture is accepted fastest

  C.a lot of farm work is still done in the old way

  D.mechanization is avoided to save primitive forest

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• 2In the first sentence of the second paragraph，the word“skyrocketed”most probably means _____ .

  A.became various

  B.was updated

  C.increased rapidly

  D.remained the same

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• 3The first paragraph uses several examples to convey the ideas that _____ .

  A.the introduction of machines into agricultural work created rebellions on the part of the farmers

  B.the use of internal-combustion engine as a shief power source for the farm produced great influence

  C.the mechanization of agricultural work after 1850 gradually robbed many farmers of their work

  D.ingenious improvements were made in farming machines in the 1860s to yield production

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• 4When the tank can carrying poisonous gas ran off the rails，the firemen tried to _____ the village from all traffic.

  A.dismiss

  B.insulate

  C.isolate

  D.expel

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• 5Under her administration，claim the critics， _____ high－rise construction has destroyed the character of the city's downtown，darkening its streets and driving business.

  A.rapid

  B.rampant

  C.speedy

  D.random

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• 6Persontoperson sale failed to meet the need _____ .

  A.when the Industrial Revolution started

  B.when goods began to be produced in great quantities

  C.because trains replaced men in carrying goods around

  D.as attention was shifted from distribution to production

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• 7From the last sentence of the second paragraph we learn _____ .

  A.advertising is no different from person-to-person selling in substance

  B.advertising extends sales promotion to a larger area

  C.advertising has greatly improved the production of goods

  D.it is very expansive to advertises a new product

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• 8By saying that“the decision is the prospect's”，the author means _____ .

  A.advertisement often persuades people to buy what they don't really want

  B.advertisement can never really influence people's ability to decide

  C.whether to buy an advertised product is up to the would-be customer

  D.the effect of an advertisement on the public is difficult to determine

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• 9The last paragraph is mainly about _____ .

  A.the cost of advertising a product

  B.the effect of advertisement on people's lives

  C.the benefits advertisement brings

  D.various media for advertising products

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• 10In which of the following years did the poor people constitute the largest proportion of the American population、

  A.1973

  B.1987

  C.1969

  D.1983

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