问题描述：
完形填空
①They were__1__ the secrets of the earth and the sky.
A.learning B.learn C.to study D.studying
②The men had to face the darkness of six-month nights,as well as the world's worst__2__.
A.temperature B.weather C.snow D.sunshine
③The men lived in a group of buildings joined together by tunnels.They were cut off from the rest of the__3__.During the long winter,they could not be reached even by plane.
A.world B.city C.village D.gold
④Each man also had his own important job to do.There was a cook and a doctor.There were scientists and men___4__ were trained in other jobs.
A.what B.who C.when D.whether
⑤Working together,they proved that men can live and work___5__ the South Pole.
A.at B.in C.over D.on
只要答案就行
①They were__1__ the secrets of the earth and the sky.
A.learning B.learn C.to study D.studying
②The men had to face the darkness of six-month nights,as well as the world's worst__2__.
A.temperature B.weather C.snow D.sunshine
③The men lived in a group of buildings joined together by tunnels.They were cut off from the rest of the__3__.During the long winter,they could not be reached even by plane.
A.world B.city C.village D.gold
④Each man also had his own important job to do.There was a cook and a doctor.There were scientists and men___4__ were trained in other jobs.
A.what B.who C.when D.whether
⑤Working together,they proved that men can live and work___5__ the South Pole.
A.at B.in C.over D.on
只要答案就行
问题解答：
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