Passage oneQuestions 11 to 13 are based on the passage you have just heard.

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• 1                                       Passage TwoQuestions 14 to 17 are based on the passage you have just heard.

  A.He didn’t like physics any more.

  B.His eyesight was too poor.

  C.Physics was too hard for him.

  D.He had to work to support himself.

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• 2                                         Passage ThreeQuestions 18 to 20 are based on the passage you have just heard.

  A.It can be cooked in many ways.

  B.It is delicious but inexpensive.

  C.It gives higher yields than other grain crops.

  D.It grows easily in various conditions.

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• 3The 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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• 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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• 5Few 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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