早期乳癌做保乳手术和放、化疗综合治疗的疗效与根治手术比()
A.疗效相同
B.前者比后者好
C.后者比前者好
D.结论不肯定
E.文献中无随机分组研究资料
参考答案:A
下列克罗恩病的表现中,哪项最少见
A.腹痛B.腹块C.腹泻D.癌变E.瘘管形成
The Japanese people keep up cheerful spirits ________ the world that they can get over the crisis caused by the terrible tsunami(海啸).
A.being convinced
B.convinced
C.to convince
D.having convinced