—______ two little boys behind the trees?

—No, ______. [ ]

A. Is there; there is

B. There isn't; there are

C. Are there; there aren't

D. There aren't; there aren't

不属于交接班地点必须做的是（）

A、认真检查作业现场的安全情况，做到不安全不生产

B、准时到达刮板输送机机头现场交接班

C、按规定履行交接班手续