大全D-14（未討論過）

WhiteScarf

    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    

A nutritionist studying the effects of massive
doses of vitamin C found that of a group of

600 people who regularly took 1,500
mg of vitamin C daily for a year, fewer than 9 percent

suffered serious cases
of flu; of a group of 600 people who took 250 mg of vitamin C (the

standard
recommended daily allowance) daily for a year, 34 percent suffered at least one

serious case of flu; and of a group of 600 people who took no vitamin C for a
year (other

than that found in the foods in a balanced diet), 32 percent
suffered at least one serious case

of flu.

        
        
        
        
        
        
        
        
        
        
        

Which of the following hypotheses is best supported
by the evidence above?
        
    

    

(A) The
effectiveness of vitamin C in preventing serious cases of flu increases in
direct proportion to the amount of vitamin C taken.

    

(B) Vitamin C
is helpful in preventing disease.

    

(C) Doses of
vitamin C that exceed the standard recommended daily allowance by 500 percent
will reduce the incidence of serious cases of flu by 25 percent.

    

(D) Massive
doses of vitamin C can help to prevent serious case of flu.（D）

    

(E) A balanced
diet contains less than 250 mg of vitamin C.

想請問A選項為什麼不行阿？
    
    

WhiteScarf

為什麼上面有這麼多奇怪的東西？

WhiteScarf

怎麼刪掉這篇文章阿？