输尿管全长有3处狭窄,它们是()()和经过髂动脉处。
参考答案:肾盂输尿管连接处;膀胱壁段
Don’t always believe him. Sometimes ______ he does is quite different from what he says.
A.what
B.that
C.how
D.who
志贺氏菌属依抗原结构分为A群痢疾志贺氏菌,B群福氏志贺氏菌,C群(),D群宋内志贺氏菌。