单选题The old lady has developed a _____ cough which cannot be cured completely in a short time.AperpetualBpermanentCchronicDsustained
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
参考解析
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。
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。
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