柏油样便见于()
A.上消化道出血
B.阿米巴痢疾
C.痔或肛裂
D.急性细菌性痢疾
E.急性出血性坏死性肠炎
参考答案:A
外檐施工必须站在(),禁止在屋面上()。
—Do you know David?
—Yes. I know him very __________. [ ]
A. good
B. well
C. nice
D. fine