瘾疹的皮损特点不正确的是（）
A.发于身体的任何部位形态不一
B.大小不等的红色或白色风团
C.界线清楚
D.消退后留有痕迹
E.发无定处
参考答案：D
____, Franks never seems able to do the work satisfactorily. [ ]
A. As hard he tries
B. Try hard as he might
C. As hard as he tries.
D. Try, as hard as he might
“水谷之海”是指 （）
A.胆
B.脾
C.大肠
D.小肠
E.胃
