Nerve signals may travel through nerve or muscle fibers at <u>speeds</u> as high as two hundred miles per hour.

试卷相关题目

• 1Cement was <u>seldom</u> used in building during the Middle Ages.

  A.crudely

  B.rarely

  C.originally

  D.symbolically

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• 2Since the Great Depression, the United States government has protected farmers from <u>damaging</u> drops in grain prices.

  A.slight

  B.surprising

  C.sudden

  D.harmful

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• 3Many fine cooks <u>insist</u> on ingredients of the highest quality.

  A.demand

  B.rely on

  C.prepare for

  D.create

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• 4The poet William Carols Williams was a New Jersey <u>physician</u>.

  A.doctor

  B.professor

  C.physicist

  D.resident

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• 5Medicine depends on other fields for basic information, <u>particularly</u> some of their specialized branches.

  A.conventionally

  B.obviously

  C.especially

  D.inevitably

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• 6We shall take the treasure away to a <u>safe</u> place.

  A.clean

  B.pretty

  C.distant

  D.secure

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• 7An important part of the national government is the Foreign Service, <u>a branch </u>of their  specialized branches.

  A.a unity

  B.a division

  C.an embassy

  D.an invasion

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• 8The child’s <u>abnormal</u> behavior puzzled the doctor.

  A.bad

  B.frightening

  C.repeated

  D.unusual

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