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28#
发表于 1 分钟前 |只看该作者
求确认 谢谢
RC 4
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 received 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 jnjectable 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 most effective when administered to adults.
选D
变体:
Until now, only injectable vaccines against influenza have been available. They have been used primarily by older adults, who are at risk for complications from influenza. A new vaccine administered in a nasal spray has proven effective in preventing influenza in children. Since children are significantly more likely than adults to contract and spread influenza, making the new vaccine widely available for children will greatly reduce the spread of influenza across the population.
Which of the following, if true, most strengthens the argument?
A.If a person receives both the injectable and the nasal-spray vaccine, the two vaccines do not interfere with each other.
B.The new vaccine uses the same mechanism to ward off influenza as injectable vaccines do.
C.Government subsidies have kept the injectable vaccine affordable for all older adults.
D.Of the older adults who contract influenza, relatively few contract it from children with influenza.
E.Many parents would be more inclined to have their children vaccinated against influenza if the vaccination did not require an injection.
选E
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