Today Chinese ______ by more and more people all over the world.

A．was spoken

B．is spoken

C．spoke

D．speak

45岁男子因输尿管结石行造影术，造影确定结石位于左侧输尿管第二个狭窄处 ，左输尿管第二个狭窄位于

A．肾盂与输尿管结合处

B．腰大肌前面

C．髂外动脉起始处前方

D．左髂总动脉末端前方

E．膀胱壁内