What can be inferred about taking painkillers from Paragraph 2?
A、It leads to addiction in a short period of time.
B、It builds up the tolerance to pain.
C、It becomes less effective over time
D、It cures stomach and liver diseases slowly.
答案是:C
解析：【答案】 C
【考情点拨】雅理判断题。
【应试指导】文章第二段第二句提到，你的身体也可能会对药物产生抗药性，随着时间的推移，药效会越来越弱。故选 C .
