根据下面一段对话内容，从对话右边方框内的选项中选出能填入空白处的最佳选项，其中两项为多余选项。

A:().

B:So you’re going to do it

A．This tour is the chance of lifetime.

B．It goes all over North America and South America.

C．It looks like you’re dreaming about something.

D．You’ll have to quit school and your job at the store.

E．My agent wants me to go on a tour with Are’s Jazz Band.

F．Have you told anyone about this yet

G．It would be a great opportunityl

当作业人员发现高压线断线掉落到地面时，应该如何避免跨步电压触电？