Bissell is a village in West Sahara. Before Ken Levin discovered it, people here tried many times to walk out of the desert, but they didn’t. He asked everyone, but got the same answer: (1) No matter which direction you walk towards, you’ll return to the starting point. However, Ken Levin walked northwards from Bissell, and went out the desert three days and a half later.

Ken Levin wanted to know why, so he asked a villager to be his guide. He didn’t take his compass (指南针) and followed with only a stick. They walked about 800 miles during ten days. On the morning of the 11th day, they returned to Bissell.

Ken Levin finally understood: the people of Bissell could not walk out because they didn’t know the Pole Star (北极星). In the desert, if a man goes only by his feeling, he will walk in circles of all sizes and the final footprint will probably be a shape of tape. The village of Bissell was in the middle of the desert without a (2) reference. So it was impossible to walk out without knowing the Pole Star or taking a compass.

When Ken Levin left Bissell, he took a young man named Guterl. He told him he could walk out of the desert as long as He walked in the direction of the Pole Star in the night. Guterl followed Ken Levin’s advice and succeeded.

【小题1】把（1）处画线的句子译成汉语。
_________________________________________________________
【小题2】回答问题。
How long did it take Ken Levin to walk out of the desert?
_________________________________________________________
【小题3】选出（2）处画线单词“reference”的中文意思。______

A．参照物

B．目的地

C．说明书

【小题4】在文中找出能证明Guterl走出沙漠的句子。
_________________________________________________________
【小题5】简要概括出本文的主旨大意，不超过10个词。
It’s mainly about how the Pole Star ___________________________________________________________.