这道题可以这样简单理解。 “However, since children seldom develop serious complications from influenza, ” 与 “no significant public health benefit would result from widespread vaccination of children using the nasal spray.” 这两句话中间有gap。 为什么孩子不发生并发症,用nasal spray对社会就没好处呢?万一孩子只是不发生并发症,而会将病传染给他们密切接触的父母,那么他们用nasal spray就会对他们的父母有利。 D选项填了这个gap。
这道题可以这样简单理解。 “However, since children seldom develop serious complications from influenza, ” 与 “no significant public health benefit would result from widespread vaccination of children using the nasal spray.” 这两句话中间有gap。 为什么孩子不发生并发症,用nasal spray对社会就没好处呢?万一孩子只是不发生并发症,而会将病传染给他们密切接触的父母,那么他们用nasal spray就会对他们的父母有利。 D选项填了这个gap。