2017版高考英语大一轮复习 Unit 5 The power of nature复习练案 新人教版选修6.doc

Unit 5 The power of nature Ⅰ.完形填空 (2016·北京) A Race Against Death It was a cold January in 1925 in North Alaska.The town was cut off from the rest of the world due to heavy snow. On the 20th of that month, Dr.Welch__1.A__a sick boy, Billy, and knew he had diphtheria, a deadly infectious(传染的)disease mainly affecting children.The children of Nome would be__2.B__if it struck the town.Dr.Welch needed medicine as soon as possible to stop other kids from getting sick.__3.D__， the closest supply was over 1,000 miles away, in Anchorage. How could the medicine get to Nome? The towns__4.C__was already full of ice, so it couldnt come by ship.Cars and horses couldnt travel on the__5.B__roads.Jet airplanes and big trucks didnt exist yet. __6.C__January 26, Billy and three other children had died.Twenty more were__7.D__. Nomes town officials came up with a(n)__8.A__.They would have the medicine sent by__9.B__from Anchorage to Nenana.From there, dogsled(狗拉雪橇)drivers—known as “mushers”—would__10.A__it to Nome in a relay(接力)． The race began on January 27.The first musher, Shannon, picked up the medicine from the train at Nenana and rode all night.__11.C__he handed the medicine to the next musher, Shannons face was black from the extreme cold. On January 31, a musher named Seppala had to__12.D__a frozen body of water called Norton Sound.It was the most__13.C__part of the journey.Norton Sound was covered with ice，which could sometimes break up without warning.If that happened, Seppala might fall into the icy water below.He would__14.D__，and so would the sick children of Nome.But Seppala made it across. A huge snowstorm hit on February 1.A musher named Kaasen had to brave this storm.At one point, huge piles of snow blocked his__15.C__.He had to leave the trail (雪橇痕迹)to get around them.Conditions were so bad that it was impossible for him to__16.A__the trail again.The only hope was Balto, Kaasens lead dog.Balto put his nose to the ground，__17.B__to find the smell of other dogs that had