只要参加报关员资格全国统一考试并取得《报关员资格证书》,即成为报关员。 ( )
参考答案:错
当m______时,两直线y=2x+4与y=-2x+m的交点在第二象限.
They are working () time to fulfil the task according to the schedule.
A. against
B. over
C. ahead of
D. before