2. 职称英语
  3. Young horses may develop a ______ cough before and during exercise, particularly

Young horses may develop a ______ cough before and during exercise, particularly

游客2023-09-05  70
问题 Young horses may develop a ______ cough before and during exercise, particularly when cold air is breathed in during warming-up exercise or under dusty conditions.
选项 A、perpetual
B、permanent
C、chronic
D、sustained
答案 C
解析 近形近义题。chronic意为“慢性的；长期的”，强调延续时间长的，如 a chronic disease(慢性病)； [A]perpetual“永久的；不断的”，强调稳定性和持久性；[B]permanent“永久的；不变的”，指总是处于相同的情况和地位，可长期持续下去，永久不变；[D]sustained“持续不变的；不间断的”。
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