天主教神职人员主体由哪几个品位组成（）。
A.主教
B.圣体
C.神甫
D.助祭
参考答案：A, C, D
He is finishing _____ a funny story. And he is thinking about _____ to Beijing for a vacation.
A．to write, going
B．writing, to go
C．writing, going
D．to write, to go
焊工工作场所噪声最大不得超过（）分贝。
A、65
B、75
C、85
D、95
