请教

crazyday

239. Organized in 1966 by the Fish and Wildlife Service, the Breeding Bird Survey uses annual roadside counts along established routes [U]for monitoring of population changes of as many as. or of [/U]more than 250 bird species, including 180 songbirds.
(A)        for monitoring of population changes of as many as, or of
(B)        to monitor population changes of as many, or
(C)        to monitor changes in the populations of
(D)        that monitors population changes of
(E)        that monitors changes in populations of as many as, or

答案是C，为什么呢？它省略了as many as,不就只剩了more than,不是改变了原意了吗？

joywzy

changes in the populations 比population changes更明确.

crazyday

但是C也不对呀？改变原意应该说也是比较严重的错误啊？