关于"气肿性膀胱炎"的知识，下列哪项是错误的（）
A.女性多见
B.大肠杆菌最常见
C.糖尿病
D.尿潴留
E.膀胱内通常为氮气
参考答案：E
若（2x-3）5=a5x5+a4x4+a3x3+a2x2+a1x+a0，则a1+a2+a3+a4+a5=______．（用数字作答）
John promised his doctor he()not smoke,and he has not smoked ever since.
A. might
B. should
C. could
D. would
