In Line 8, Paragraph 1, “the desire of individuals to maximize their incomes” means ________.

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• 1The remarkable ________ of life on the Galapagos Islands inspired Charles Darwin to establish his theory of evolution.

  A.classification

  B.variety

  C.density

  D.diversion

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• 2The news item about the fire is followed by a detailed report made ________.

  A.on the spot

  B.on the site

  C.on the location

  D.on the ground

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• 3Your improper words will give ________ to doubts concerning your true intentions.

  A.rise

  B.reason

  C.suspicion

  D.impulse

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• 4In my opinion, you can widen the ________ of these improvements through your active participation.

  A.dimension

  B.volume

  C.magnitude

  D.scope

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• 5The English language contains a(n) ________ of words which are comparatively seldom used in ordinary conversation.

  A.altitude

  B.latitude

  C.multitude

  D.attitude

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• 6The first two sentences in the second paragraph tell us that ________.

  A.producers can satisfy the consumers by mechanized production

  B.consumers can express their demands through producers

  C.producers decide the prices of products

  D.supply and demand regulate prices

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• 7According to the passage, a private-enterprise economy is characterized by ________.

  A.private property and rights concerned

  B.manpower and natural resources control

  C.ownership of productive resources

  D.free contracts and prices

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• 8The passage is mainly about ________.

  A.how American goods are produced

  B.how American consumers buy their goods

  C.how American economic system works

  D.how American businessmen make their profits

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• 9According to the passage, the credit card enables its owner to ________.

  A.withdraw as much money from the bank as he wishes

  B.obtain more convenient services than other people do

  C.enjoy greater trust from the storekeeper

  D.cash money wherever he wishes to

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• 10From the last sentence of the first paragraph we learn that ________.

  A.in the future all the Americans will use credit cards

  B.credit cards are mainly used in the United States today

  C.nowadays many Americans do not pay in cash

  D.it is now more convenient to use credit cards than before

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