A huge amount of environmental damage has been by the destruction of the rainforests.
A. brought up
B. brought about
C. brought down
D. brought out
网友回答
A. brought up
(答案→)B. brought about
C. brought down
D. brought out
解析：A.提出，抚养 B.引起 C.降低，打倒 D.出版。根据句意：由于雨林的毁坏，大量的环境问题发生了。故选B