One of the reasons why the long-term trend of prices has been downwards is that ________.

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• 1The huge increase in world production and population ________.

  A.has made the world a worse place to live in

  B.has had a positive influence on the environment

  C.has not significantly affected the environment

  D.has made the world a dangerous place to live in

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• 2According to the author, most students ________.

  A.believe the world’s environment is in an undesirable condition

  B.agree that the environment of the world is not as bad as it is thought to be

  C.get high marks for their good knowledge of the world’s environment

  D.appear somewhat unconcerned about the state of the world’s environment

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• 3The navigation systems in cars like Lexus, BMW and Audi are mentioned to show ________.

  A.the immaturity of the new technology

  B.the superiority of the global positioning system

  C.the cause of price fluctuations in car equipment

  D.the different ways of providing guidance to the driver

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• 4The navigation computer functions ________.

  A.by means of a direction finder and a speed detector

  B.basically on satellite signals and a map database

  C.mainly through the reception of turn-by-turn directions

  D.by using a screen to display satellite signals

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• 5Despite their varied designs, navigation computers used in cars ________.

  A.are more or less the same price

  B.provide directions in much the same way

  C.work on more or less the same principles

  D.receive instructions from the same satellites

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• 6Fish resources are diminishing because ________.

  A.no new substitutes can be found in large quantities

  B.they are not owned by any particular entity

  C.improper methods of fishing have mined the fishing grounds

  D.water pollution is extremely serious

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• 7The primary solution to environmental problems is ________.

  A.to allow market forces to operate properly

  B.to curb consumption of natural resources

  C.to limit the growth of the world population

  D.to avoid fluctuations in prices

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• 8Why did the intelligence test become unpopular in the past few decades、

  A.Its validity was challenged by many communities.

  B.It was considered discriminative against minority children.

  C.It met with strong opposition from the majority of black parents.

  D.It deprived the black children of their rights to a good education.

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• 9The recent legal action taken by some black parents in California aimed to ________.

  A.draw public attention to IQ testing

  B.put an end to special education

  C.remove the state’s ban on intelligence tests

  D.have their children enter white schools

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• 10The author believes that intelligence testing ________.

  A.may ease racial confrontation in the United States

  B.can encourage black children to keep up with white children

  C.may seriously aggravate racial discrimination in the United States

  D.can help black parents make decisions about their children’s education

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