He can hardly swim, _______? [ ]
A. couldn't he?
B. can't he
C. could he
D. can he
答案:D
库欣(Cushing)溃疡是指
A.重度烧伤后继发胃、十二指肠溃疡
B.脑外伤后继发胃、十二指肠溃疡
C.重度休克后继发胃、十二指肠溃疡
D.脓毒血症继发胃、十二指肠溃疡
E.服用阿司匹林、吲哚美辛(消炎痛)继发胃、十二指肠溃疡