【正确答案】 D

【答案解析】[分析] 细节题型。 参看第四段的头三句话Many“snake oil”remedies are highly laced with...Anyone who drinks them may get so drunk...Little wonder that“snake oil”is a popular cure-all for minor aches and hurts!(许多蛇油中含有大量酒精或麻醉品。服用的人会沉醉于极度的兴奋中，这就难怪对小痛痒来说，蛇油是受欢迎的万能药了。)