xdf所说的动词>adj>抽象n>分词>从句,是只指有效性吗?还有如
53. There is no consensus on what role. if any, is played by acid rain in slowing the growth or damaging forests in the eastern United States.
(A) slowing the growth or damaging
(B) the damage or the slowing of the growth of
(C) the damage to or the slowness of the growth of
(D) damaged or slowed growth of
(E) damaging or slowing the growth of
(A) slowing the growth or damaging中 slowing 是动词还是分词呢 | 
