文艺复兴建筑的思想背景是（）
A.神权主义
B.人文主义
C.儒家思想
D.资本主义
参考答案：B
He took a second driving test and finally ________.
A．succeeded in passing it
B．succeeded in it
C．succeeded to through
D．succeeded to pass it.
简述表面淬火的工艺过程。
