商业谈判中，应多选用通俗易懂的地方语言。
参考答案：错
如图所示的电路中，L1和L2是两只标有“6V 6W”字样的小灯泡，电源电压6V．闭合开关两灯正常工作．则a是______表，b______表，a表的示数是______．
His father didn't watch the football match last Sunday ______ he was busy all day.[ ]
A. before
B. until
C. because
D. so
