题目

（2010·湖南湘潭市外国语学校届高三第二次月考）26. ____from other continents for millions of years, Australia has many plants and animals not found in any other country in the world. A. Having separated      B. Separating  C. Being separated  D. Having been separated 答案：D 列竖式计算并验算。 (1)335-210= (2)704+198= (3)450×8= (4)77÷6=