(2013·浙江联考)________ made our school proud was ________ more than 60% of the students were admitted to key universities in 2013.

A．What；because　　

B．That；what

C．That；because　　

D．What；that

肾小管起源于（）。

A.中肾管

B.输尿管芽

C.生后肾原基

D.中肾小管