2. 外语
  3. He has suffered from this ______ disease for about a couple of years now, no effective medicine for it at the moment.

He has suffered from this ______ disease for about a couple of years now, no effective medicine for it at the moment.

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问题 He has suffered from this ______ disease for about a couple of years now, no effective medicine for it at the moment.
选项 A、perpetual
B、permanent
C、chronic
D、sustained
答案C
解析 难词辨义。原句意为：这种慢性病已折磨了他两三年了，目前没有什么有效的药物。chronic意为“(尤指疾病)慢性的，习惯的，长期的”，表示疾病的病程长，其反义词是acute。A. perpetual意为“长期的，长久的”；B. permanent意为“永久的，持久的”；D. sustained意为“持续不变的；相同的”，A、B、D都不能与cough(咳嗽)搭配使用。
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大学英语六级

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