听下面一段较长对话，回答以下小题。
【小题1】What encouraged Mr Roberston to go to the Antarctic?

A．A training course.

B．A program.

C．A report.

【小题2】What was the biggest danger according to Mr Roberston?

A．Falling into ice holes.

B．Losing touch with others.

C．Living in extreme temperatures.

【小题3】What caused the funny noise?

A．The wind.

B．The plane.

C．The device.

【小题4】What was a surprise for Mr Roberston and his wife?

A．They could leave earlier.

B．They got some fresh food.

C．Someone lived near them.