单项选择题

From Dr. Dustan's study we can infer that______.

A．a low-salt diet may be prescribed for some people
B．the amount of salt intake has nothing to do with one's blood pressure
C．the reduction of salt intake can cure a hypertensive patient
D．an extremely low-salt diet makes no difference to anyone

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单项选择题

The phrase vocal... exponent (line 2, paragraph 5) most probably refers to______.

A．eloquent doctor
B．articulate opponent
C．loud speaker
D．strong advocate

单项选择题

In the third paragraph, Dr Laragh implies that ______.

A．people should not be afraid of taking excessive salt
B．doctors should not advise people to avoid salt
C．an adequate to excessive salt intake is recommended for people in disease
D．excessive salt intake has claimed some victims in the general population