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托福词汇440题(217):constituents

2014-05-24 08:57:00来源:新东方在线整理

  托福词汇440题第217题

  Helium nuclei have also been found to be constituents of cosmic rays that fall on the earth (cosmic "rays" are not really a form of radiation; they consist of rapidly moving particles of numerous different kinds) .

  The word "constituents" is closest in meaning to which of following?

  (A) relatives

  (B) causes

  (C) components

  (D) targets

  答案见第2页

  

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