阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
Every winter in Alaska a race is held. But this is no ordinary race. Teams of dogs pull sleds（雪橇）along the snow and ice, 1.____ (carry) up to 500 kg of supplies. A single driver is in charge of each team, and stands on the sled. This race 2.___ (know) as Iditarod runs from the town of Anchorage to the village of Nome, a journey of more than l,800 kilometers. It usually takes the teams about ten days to complete the course.
The Iditarod is usually run in 3._____ (extreme) difficult weather conditions.Daytime 4._____ (temperature) range from zero to minus 40 degrees. Visibility（能见度）is often very poor, so drivers never allow 5._____ (them) to become separated from their team of dogs. 6.____ , the drivers depend almost entirely on the dogs for their survival.
The origin of the race 7.______ (go) back many years to a time 8.____ some medicine needed to be taken from Anchorage to Nome, a very remote village. Because of severe weather, the only way to send the medicine 9.____ (be) to use dogs. Happily, the medicine was delivered just 10._____ time to save lives. To celebrate the heroic journey, Alaskans developed the Iditarod.
学英语2021高一新教材报纸答案试题答案
】All rivers (流向) into the sea.
学英语2021高一新教材报纸答案试题答案
学英语2021高一新教材报纸答案