Question

【题目】Take one pill (药片) ________. Too many are bad for your health.

A. at a timeB. at timesC. in timeD. on time

Answer 1

【答案】A

【解析】

句意：一次服一片。吃太多对你的健康有害。考查介词短语辨析。at a time一次/每次；at times不时地，相当于sometimes；in time及时；on time准时。根据句意语境，可知后面三项不合句意，故选A。