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Most people like to travel on land because it’s always safe. ___16____there are still some people who want to travel in dangerous places. One of these places is the Arctic Ocean(北冰洋). Men do not___17____the Arctic Ocean very often. It is__18_____danger. It is dark and cold there in winter. The ice is dangerous,____19___. Especially in summer the ice breaks and moves___20____. In February, John, William started to cross the Arctic Ocean. He went with three men and several dogs. The dogs pulled the sledge(雪橇)over the ice, and on the sledge there was food and some___21____things for them. They traveled slowly___22____months. In the summer the ice broke, so they__23___stop and wait for the cold days for come. Then when the ice was hard, they started the journey again. They stayed on a big piece of ice. The ice moved in wind and took them to the___24____. During their journey, a___25____dropped some food for them. On April 6, they reached the North Pole(北极). Then they traveled to the south. They come back and reached the land on May 29. ( )16.A. So B. But C. Or D. Then ( )17.A. across B. crossing C. cross D. go though ( )18.A. full of B. fill with C. stored with D . kept by ( )19.A. either B. neither C. so D. too ( )20.A. quickly B. slowly C. highly D. comfortably ( )21.A. another B. other C. others D. the other ( )22.A. to B. in C. for D. with ( )23.A. had better B. had to C. might D. could ( )24.A. east B. south C. west D. north ( )25.A. ship B. plane C. train D. sledge |