请选择DCBA6k*O;R6j/d+j.x;w+O9S:g(l+T8\7S7eForests _______ and burned at such a speed that they will disappear from the earth in the future..n+n9t1T
A.cut.n+n9t1T
B. are cut.n+n9t1T
C. are being cut.n+n9t1T
D. had been cut.n+n9t1T