医务人员在（）情况时应先洗手，然后进行卫生手消毒。

A.接触患者的血液、体液和分泌物以及被传染性致病微生物污染的物品后

B.直接为传染病患者进行检查、治疗、护理或处理传染患者污物之后

C.以上都是

D.以上都不是

The mother is told that her child is desperately ill—the chances of survival are slim, and the treatment is as dreadful as the disease.()

A. incurable

B. fearful

C. impossible

D. troublesome