男性，45岁，因食管癌，行手术切除术后，下列食管癌的病理诊断中，不可能存在的是
A．鳞癌
B．腺癌
C．腺鳞癌
D．癌肉瘤
E．间皮肉瘤
参考答案：E
There is nothing _______. [ ]
A. worry about
B. to worry
C. to worried about
D. to worry about
This is ________apple.
A. a B. two C. an
