单选题
How much of the land surface on Earth is covered by rainforests?
问题1选项
A.More than 50% .
B.Nearly 12% .
C.Less than 5.3%.
D.Around 22. 5% .
A.More than 50% .
B.Nearly 12% .
C.Less than 5.3%.
D.Around 22. 5% .
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