[問題]GWD 18 Q40

[faireform]

Until now,only injectable vaccines against influenza have been available.Parents are reluctant to subject children to the pain of injections,but adults,who are at risk of serious complications from influenza,are commonly vaccinated.A new influenza vaccine,administered painlessly in a nasal spray ,is effective for children.However,since children seldom develop serious complications from influenza,no significant public health benefit would result from widespread vaccination of children using the nasal spray.
Which of the following is an assumption on which the argument depends?
A.Any person who has receiverd the injectable vaccine can safely receive the nasal spray vaccine as well.
B.The new vaccine uses the same mechanism to ward off influenza as injectable vaccines do.
C.The injectable vaccine is affordable for all adults.
D.Adults do not contract influenza primarily from children who have influenza.
E.The nasal spray vaccine is not effective when administered to adults.
答案:D
不太明白答案與題目之邏輯關係
煩幫忙解惑,大感恩

[hccill]

不是大牛,但試解看看~

題目主要是在說:
ㄧ直到最近,都只有注射型的感冒疫苗可以用,但因為小孩子怕痛,家長們ㄧ直都很猶豫要不要給小孩子注射,但是,那些有感冒引起併發症危險的成年人ㄧ般都會注射.
最近新發明了ㄧ種無痛的鼻噴霧式疫苗,對小孩子很有效,但是因為小孩子很少會因為感冒而引起併發症,所以在沒有利可圖的形況下,這種新型疫苗將不會普及.

問assumption?

D:Adults do not contract influenza primarily from children who have influenza.
成人們得感冒的主要來源並不是感冒的小孩子
=>取非,若成人們得感冒的主要來源是感冒的小孩子->成人們易引起併發症(我是覺得在此可以被weaken,因為題目有說:那些有感冒引起併發症危險的成年人ㄧ般都會注射疫苗,即不怕併發症)->危險->要給小孩子打新型疫苗減少感冒機會->有利可圖->weaken原題結論

也就是說,如果成人們得感冒的主要來源並不是感冒的小孩子,而是其他來源(例如:雞,鴨),則小孩子既不會得併發症,又不會傳染給大人,則疫苗就無利可圖囉!

老實說,我自己對這答案D不太滿意,我是選E,我認為:取非,若新型噴鼻式疫苗對成人有效->雖然小孩子不會得併發症沒有市場,可是成人會阿!(如果有不會痛的疫苗,應該沒人會打會痛的疫苗吧!?)->就有利可圖囉!!->weaken原題結論~

我還是覺得E好ㄚ~

參考參考~
open to discuss~

[faireform]

謝謝你的解答,我因為也是選E ,所以對於答案D想不通...請問還有哪位有更好的解釋支持答案D或E呢??謝謝!