厅外呼梯除两端站外，其余层有上、下方向两个按钮，该电梯为（）功能电梯
A、上集选
B、全集选
C、下集选
D、自动
参考答案：B
-------Do you enjoy your present job?
------- ________． I just do it for a living．
A．Of course
B．Not really
C．Not likely
D．Not a little
尾组
