Mr. Brown is an experienced doctor. He is always in facing with emergency.
A. as cool as a cucumber
B. as busy as a bee
C. as poor as a church mouse
D. as strong as a horse
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(答案→)A. as cool as a cucumber
B. as busy as a bee
C. as poor as a church mouse
D. as strong as a horse
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。