The removal of coral, either for souvenirs collected by the public or for commercial sale by tourist enterprises, ______ some coastal regions of Australia and elsewhere.
A.develops B.threatens C.promotes D.improves正确答案B
The removal of coral, either for souvenirs collected by the public or for commercial sale by tourist enterprises, ______ some coastal regions of Australia and elsewhere.
A.develops B.threatens C.promotes D.improves正确答案B
