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?

D Adults do not contract influenza primarily from children who have influenza

就选D，这个题看好几天了就是看不懂，咋回事啊，NN能给我讲讲么？最好能翻译一下(不好意思的说～)

这是俺从Prep上手打的，看俺这么诚心求教，帮帮忙啊～

P.S, 为什么我在破解上面找不到这个题呢，这是我做Prep2软件上的啊？

GWD-1-Q40:
   

出处：   http://bbs..org/dispbbs.asp?boardid=40&Id=124229

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?

 Which of the following is an assumption on which the argument depends?

 Which of the following is an assumption on which the argument depends?

竟然在GWD上面，害我手打， 我整理了一下，可仍不明白啊～

1.       现在只有注射疫苗来防止流行感冒

2.       大人怕孩子疼，所以孩子很少有打疫苗的

3.       那些有危险得严重并发症的大人都会打疫苗 ??

4.       有一种新的疫苗，不痛，适合小孩

5.       然而，由于小孩很少因流行感冒而得严重的并发症

6.       所以这个新疫苗的普及对公共健康没有益处

问假设

D取非：大人得的感冒都是由小孩传染的
        è
            大人得并发症
        è影响公共健康，
        削弱

可是文章说那些有危险得严重并发症的大人都会打疫苗啊？不明白

我觉得要是假设的话也应该假设：只得感冒不产生并发症的话对公共健康没有影响

NN知道么？