对怀疑有膀胱癌的患者应进行下列检查,除了()。
A.尿脱落细胞学检查
B.尿癌细胞PCR检测
C.静脉肾盂造影
D.膀胱镜检查
E.B超引导下的膀胱壁随机活检
参考答案:B, E
When his brother was to cross the street,he was knocked down by a truck and badly ________.
A.injured
B.damaged
C.harmed
D.destroyed
λ噬菌体转录过程修饰宿主的RNA聚合酶是为了使其能识别噬菌体的启动子。( )