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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:743

_______from other continents for millions of years, so there are many plants and animals in Australia that cannot be found anywhere else in the world.

A.Being separated
B.Separated
C.It has been separated
D.Having separated
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fromothercontinentsformillions