单选题The old lady has developed a _____ cough which cannot be cured completely in a short time.A perpetualB permanentC chronicD sustained

题目
单选题
The old lady has developed a _____ cough which cannot be cured completely in a short time.
A

perpetual

B

permanent

C

chronic

D

sustained


相似考题
参考答案和解析
正确答案: D
解析:
句意:这位老太太得了慢性咳嗽,无法在短时间内完全治愈。chronic慢性的,延续时间长的,尤指疾病长期的、连续复发的。该词与cough形成修饰关系。which引导的定语从句表明此病不能在短期内治愈,应为慢性病,因此应选C。perpetual永久的,强调持续不断的。permanent永恒的,指在相同地方和条件下持续并且无改变。sustained持续的,持续下去的。这三个选项均不能用来修饰cough。