Educators and explorers Will Steger, John Stetson, Elizabeth Andre and Abby Fenton joined four Inuit hunters on a 1,200-mile, four-month-long dog-seld expedition (考察队) across the Canadian Arctic’s Baffin Island.

The expedition is travelling with four Inuit dog teams over traditional hunting paths, up frozen rivers, through steep-sided bays, over glaciers and ice caps, and across the sea ice to reach some of the most remote Inuit village of the world.

The travelers wake up early around 6 a. m . During the course of the day they are able to travel about 17 miles. They hope to be able to travel 25 miles or 30 miles per day. They manage their body temperature by adding or taking off layers depending on their level activity.

Team member Elizabeth Andre had to leave the expedition because of frostbite(冻伤) . She was disappointed to miss part of the expedition, but leaving the field was the right decision to protect her fingers from any more damage. She will rejoin the expedition in Pangnirtung, the next village. Elizabeth feels how tough the weather condition can be in the Arctic. She is beginning to appreciate how much skill and knowledge of the environment the Inuit people have.

The expedition team plan to eat a combination of country foods from Iglulik, fresh meat hunted on the trail, and dried food packed out from Steger’s homeland in Minnesota.

The expedition members have already begun to notice the effects of global warming. Theo, a native Inuit traveling with the team, points out that “Looking at what we saw today －we saw that there haven’t been caribou(驯鹿) tracks for a long time. Usually, you look out of your window in Iqaluit and you see them. Now numbers are down”. Theo was born in an igloo(冰屋)and has lived in Inuit for most of his life.

49. The main purpose of the expedition is to_______.

A. experience the hard life of Inuit

B. appreciate the beautiful environment of Inuit village

C. do some research about the Inuit’s life style

D. explore the effects of global warming

50.          of the expedition team members didn't miss any part of the expedition.

A. Four       B. Six       C. Seven      D. Eight

51. The author gives an example of the caribou to show that_______.

A. global warming has had bad effects on the environment there

B. caribous are dying out because of the cold weather

C. the Inuit hunters have killed too many wild animals

D. good measures haven’t been taken to protect wild animals

52. From the text we can learn that_______.

A. the expedition team will walk across the Arctic

B. the expedition members only eat their packed food

C. the final stop for the expedition team is Pangnirtung

D. traveling to Inuit villages needs skill and knowledge of the environment.