2014春季英语人教版新课标必修3u5 sectionii语言点三检测（1）及答案重点练习----完形填空(共20小题;每小题1.5分,满分30分) the united states covers a large part of the north american continent. 36 neighbours are canada to the north,and mexico 37 the south.although the united states 38 a big country,it is not the largest in the world.in 1964,its 39 was over 185,000,000. when this 40 first beca
