GMAT
Most insomnia is not an illness or a physical condition so much as a symptom of another problem that may simply be a reaction to certain medications, anxiety about travel, or stress before a job interview.
Most insomnia is not an illness or a physical condition so much as symptomatic of another problem that may be a simple one, like a reaction caused by certain medications, anxiety about travel, or stress before a job interview.
题目基本信息