单选题 The author of this passage seems to be ______.
【正确答案】 B
【答案解析】[分析] 态度题型。 从作者在文中所用的词(safest,most effective,most popular,effective,cheap, the only thing that works)可看出作者对阿司匹林是持肯定态度的,所以选项B正确。