47. According to the passage, coughing and sneezing _______.
(A) should be taken seriously and treated accordingly
(B) are the early symptoms of bronchitis
(C) are now being effectively treated without vitamin C
(D) can be reduced with the help of vitamin C
(E) do not respond to any treatment whatsoever

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統計: A(0), B(1), C(0), D(2), E(0) #3341272

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【題組】47. According t...
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