The author mentions the example of “backpacks” (Line 4, Par

试卷相关题目

• 1Marketers need to know which of the four stages a product is in so as to ________.

  A.promote its production

  B.work out marketing policies

  C.speed up its life cycle

  D.increase its popularity

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• 2The first paragraph tells us that a new product is ________.

  A.not easily accepted by the public

  B.often inferior to old ones at first

  C.often more expensive than old ones

  D.usually introduced to satisfy different tastes

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• 3According to the passage, when people grow fond of one particular brand of a product, its sales will ________.

  A.decrease gradually

  B.remain at the same level

  C.become unstable

  D.improve enormously

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• 4In order to raise the efficiency of the water supply, measures should be taken to ________.

  A.centralize the management of water resources

  B.increase the sense of responsibility of agencies at all levels

  C.guarantee full protection of the environment

  D.encourage local and regional control of water resources

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• 5The author says that in some hot and dry areas it is advisable to ________.

  A.build big lakes to store water

  B.construct big pumping stations

  C.channel water from nearby rivers to cropland

  D.build small and cheap irrigation systems

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• 6In order to recover their share of the world market, U.S. auto makers are ________.

  A.improving product quality

  B.increasing product features

  C.modernizing product style

  D.re-positioning their product in the market

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• 7By the time he arrives in Beijing, we ________ here for tow days.

  A.have been staying

  B.have stayed

  C.shall stay

  D.will have stayed

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• 8According to the American federal government, residents of Hawaii have the longest life ________: 77.2 years.

  A.scope

  B.rank

  C.span

  D.scale

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• 9The millions of calculations involved, had they been done by hand, ________ all practical value by the time they were finished.

  A.had lost

  B.would lose

  C.would have lost

  D.should have lost

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• 10As a public relations officer, he is said ________ some very influential people.

  A.to have been knowing

  B.to be knowing

  C.to have known

  D.to know

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