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      Question

      The primary reason that smoking cigarettes is bad for

      our health is that cigarette smoke _______.
      A inhibits ability of haemoglobin to carry blood Correct Answer Incorrect Answer
      B weakens muscles participating in breathing Correct Answer Incorrect Answer
      C kills the cilia in the upper respiratory tract Correct Answer Incorrect Answer
      D destroys normal lung cells and grows cancer cells Correct Answer Incorrect Answer

      Solution

      The correct answer is C

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