诊断胃肠道穿孔的最简单、最有效的方法是（）
A.消化道钡剂造影
B.碘水造影
C.腹部透视及腹部平片
D.CT
E.CT冠状位重建
参考答案：C
Danny __________ in fifteen stores.[ ]
A. look
B. is look
C. looked
-- If you _____ away our secret that day, the current situation _____ different.
-- Sorry, but _____ to do that.
A．didn’t give; will be; didn’t mean
B．hadn’t given; would be; didn’t mean
C．hadn’t given; would have been; hadn’t meant
D．shouldn’t give; is; don’t mean
