填空题 The plain occupies the west, south and central parts of the continent, though considerable variations are to be found over so 1 a save.
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【正确答案】 1、extensive    
【答案解析】解析: The plain(平原) occupies(占) the west, south(南部) and central(中部) parts of the continent(大陆), though(虽然) considerable(相当大) variations(差异) are to be found over so extensive(广阔的) area(西部),南部和中部非洲大陆的部分,虽然相当大的差异是遍布如此广泛的地区。