— Do you know __________ they got to know each other?

— It was last year ________ they both taught English in China.

A．when was it that; when

B．when it was that; that

C．when it was that; when

D．when was it that; that

关于泌尿系统梗阻下列哪项是错误的

A．泌尿系统持续梗阻终将导致肾积水

B．膀胱以上梗阻一般仅一侧肾受影响

C．膀胱以下梗阻一般累及双侧肾脏

D．膀胱以下梗阻对肾影响较快

E．泌尿系统自肾至包皮口，任何部位都可发生梗阻