2.(24511-!-item-!-188;#058&001020)
Organized in 1966 by the Fish and Wildlife Service, the Breeding Bird Survey uses annual roadside counts along established routes for monitoring of population changes of as many as, or of 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,我选的B,没大看懂解释,说“调换了changes 和population 中性词的位置使得of more than 250 bird……错误的修饰了changes,而不是population”,求解changes in population 和population changes在这里真的很大区别吗?? 然后C选项删了as many as , or 也是可以的吗?? |