Mr. Brown is an experienced doctor. He is always ______ in facing with emergency.A.as cool as a cucumberB.as busy as a beeC.as poor as a church mouseD.as strong as a horse
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A解析短语辨析。A.镇定自若 B.像蜜蜂一样忙碌C.一贫如洗 D.力大如牛。句意：布朗先生是个有经验的医生。面对紧急情况他总是镇定自若。结合语境可知选A。