驾驶车辆汇入车流时,应提前开启转向灯,保持直线行驶,通过后视镜观察左右情况,确认安全后汇入合流。
参考答案:对
---Is your father in now?
--- No,he____ to Fan Changjiang Memorial with his friends.
A.has been
B.has gone
C.will go
D.went
危险性较大,重点要害部位动火,必须经企业领导批准方可动火。()