Although everything seems to have been taken into consideration, ____  accident can happen when the astronauts walk in  _____  space．


  1. A.
    不填；the
  2. B.
    an；不填
  3. C.
    the；the
  4. D.
    an；the
B
試題分析：第一空表泛指，并沒強調(diào)是哪起事故，故用不定冠詞an，in space 在太空上，為固定短語。句意：盡管一切事情都已考慮，但宇航員在太空行走時還是有可能發(fā)生事故。
考點：冠詞習慣用法
點評：解答有關冠詞的題型，可以從兩方面入手，一是習慣搭配，二是固定短語。對于固定短語平 時應多讀多記。
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科目：高中英語 來源： 題型：閱讀理解

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C.they can get more and more beautiful?

D.they no longer need any medicine

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A.Miller and his team based their research on 19 cases of vitamin E and health between 1993 and 2004?

B.Miller thinks it unnecessary for people to take vitamin E supplements?

C.Miller supposes it impossible for people to get enough vitamin E from their diets?

D.Miller played an important role in the tests conducted by the researchers

  Which of the following contains rich vitamin E??

A.Nuts.       

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D.All of the above.

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A.It is reported in a study that vitamin E may do more harm than good to people to live longer and get healthier.

B.Dr.Edgar Miller and his colleagues studied many cases of vitamin E and health.?

C.Dr.Edgar Miller advises that people should not depend on vitamin E supplements for longer and healthier lives.

D.People who took 200 international units of vitamin E a day or more died at a higher rate than people who did not take supplements.

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