studied most spend both own seasons rise happy member as

When a group of people work together for a same goal，they make up a team．At this time，team spirit is the（76） 　　important．

In 1957，a team of eighteen people（77） 　　the whole winter at the South Pole（南极）．There they（78） 　　the secrets of the earth．In this very cold place，there are only two（79） 　

　summer and winter．In winter，the sun never（80） 　　and there is no light at all．What's more，the weather was the worst of a year．So these eighteen men had to face（81） 　　the darkness and the bad weather．

These people made up a"family"and all the（82） 　　took turns to do things for their daily life．Everybody had his（83） 　　work to do．They trained one person（84） 　　a doctor．And another one learned how to cook．During the six﹣month﹣long winter，they worked together as one．In the end，they all finished their work，and came back home safely and（85） 　　．