According to the passage, U.S. leadership in public relations is being threatened because of ________.

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• 1It can be inferred from the passage that the author ________.

  A.is in favor of prohibiting passengers’ use of electronic devices completely

  B.has overestimated the danger of electromagnetic interference

  C.hasn’t formed his own opinion on this problem

  D.regards it as unreasonable to exercise a total ban during flight

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• 2Why is it difficult to predict the possible effects of electromagnetic fields on an airplane’s computers、

  A.Because it is extremely dangerous to conduct such research on an airplane.

  B.Because it remains a mystery what wavelengths are liable to be interfered with.

  C.Because research scientists have not been able to produce the same effects in labs.

  D.Because experts lack adequate equipment to do such research.

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• 3Few airlines want to impose a total ban on their passengers using electronic devices because ________.

  A.they don’t believe there is such a danger as radio interference

  B.the harmful effect of electromagnetic interference is yet to be proved

  C.most passengers refuse to take a plane which bans the use of radio and cassette players

  D.they have other effective safety measures to fall back on

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• 4What is said about the over 100 aircraft incidents in the past 15 years、

  A.They may have been caused by the damage to the radio systems.

  B.They may have taken place during take-off and landing.

  C.They were proved to have been caused by the passengers’ portable computers.

  D.They were suspected to have resulted from electromagnetic interferenc

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• 5The passage is mainly about ________.

  A.a new regulation for al airlines

  B.the defects of electronic devices

  C.a possible cause of aircraft crashes

  D.effective safety measures for air flight

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• 6London could soon replace New York as the center of PR because ________.

  A.British companies are more ambitious than U.S. companies

  B.British companies place more importance on PR than U.S. companies

  C.British companies are heavily involved in planning activities

  D.four of the world’s top public relations agencies are British-owned

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• 7The word “provincial” (Line 2, Par

  A.3) most probably means “________”.A.limited in outlook

  B.like people from the provinces

  C.rigid in thinking

  D.interested in world financial affairs

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• 8We learn from the third paragraph that employees in the American PR industry ________.

  A.speak at least one foreign language fluently

  B.are ignorant about world geography

  C.are not as sophisticated as their European counterparts

  D.enjoy reading a great variety of English business publications

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• 9What lesson might the PR industry take from Ted Turner of CNN、

  A.American PR companies should be more internationally-minded.

  B.The American PR industry should develop global communications technologies.

  C.People working in PR should be more fluent in foreign languages.

  D.People involved in PR should avoid using the word “foreign”.

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• 10According to the passage, Brazil has cut back its population growth ________.

  A.by educating its citizens

  B.by careful family planning

  C.by developing TV programmes

  D.by chance

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