摘要:第一节:单项填空(共15小题.每小题1分.满分15分) 从A.B.C.D四个选项中选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑.21. It is well known that nature has provided Shangri-la with endless natural treasures, making the land happy home for the local people. A. the; 不填 B. 不填; a C. the; a D. a; a

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