食管鳞癌的发生与下列哪项因素无关()
A.亚硝胺
B.霉菌
C.进食粗、烫食物
D.遗传因素
E.Barrett食管
参考答案:E
—_____?
—It's eight-thirty. [ ]
A. What day is it
B. What's the date
C. What time is it
D. When is your birthday
兼容性