Pole
（地球的）极
照片
photograph
through
虽然
陷入困境中
run into trouble
crash
坠毁
无尽的
endless
flight
飞行
到达
reach
serious
严重的
在一个地方
at one point
sack
袋子
到达
reach
North Pole
北极
肯定的
certain
explorer
探险家
When did R. E. Byrd fly over the North Pole?
He flew over the North Pole in 1926.
Did the plane crash into the mountains?
No, it didn't.
What seemed certain at one point?
It seemed certain that their plane would crash.
What did Byrd order his men to do?
Byrd ordered his men to throw out two heavy food sacks.
When did R. E. Byrd fly over the South Pole?
He flew over the South Pole in 1929.
What was the plane then able to do?
The plane was then able to rise, and it cleared the mountains by 400 feet.
What were Byrd and his men able to do first?
Byrd and his men were able to take a great many photos of the mountains that lay below.
By how much did the plane clear the mountains?
The plane cleared the mountains by 400 feet.
Why did the plane have to rise to 10,000 feet?
The plane had to rise to 10,000 feet to get over the mountains.
How far away was the South Pole at this point?
The South Pole was 300 miles away at that point.