Breathing is an _________ function of the body．

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• 1The students in the international school are encouraged to voice whatever opinions they have and question authority, which helps to develop their _________ thinking．

  A.cautious

  B.casual

  C.careful

  D.critical

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• 2The library is ________ to those who are studying in the university．

  A.potential

  B.accessible

  C.acceptable

  D.brilliant

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• 3It is _________ to drive through a red light．

  A.legal

  B.leg

  C.illegal

  D.illegally

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• 4The crowd stood in _________ silence as the funeral procession went by．

  A.respective

  B.respectful

  C.respectful

  D.respectable

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• 5China's first Passport Law makes a passport ________ for ten years with no extension．

  A.available

  B.valid

  C.official

  D.effective

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• 6It is ________ that she stayed up late last night, for she is very tired now．

  A.obviously

  B.obvious

  C.rapid

  D.cute

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• 7With the help of doctors and nurses, his _________ health and strength gradually got better．

  A.mention

  B.mind

  C.mentally

  D.mental

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• 8She is a(an)________ secretary：she never forgets anything or makes a mistake．

  A.outgoing

  B.familiar

  C.wealthy

  D.efficient

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• 9He is very ________．If you give him one dollar, he will ask you for more．

  A.greedy

  B.eager

  C.royal

  D.uncertain

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• 10One should keep ________ facing danger．

  A.quiet

  B.calm

  C.still

  D.silent

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