prep 1-195 就差一点了

195.
            (29764-!-item-!-188;#058&004338)     (GWD-7-Q13)

Like the grassy fields and old pastures that the upland sandpiper needs for feeding and nesting when it returns in May after wintering in the Argentine Pampas, the sandpipers vanishing in the northeastern United States is a result of residential and industrial development and of changes in farming practices.

A. the sandpipers vanishing in the northeastern United States is a result of residential and industrial development and of changes in

B. the bird itself is vanishing in the northeastern United States as a result of residential and industrial development and of changes in

C. that the birds themselves are vanishing in the northeastern United States is due to residential and industrial development and changes to

D. in the northeastern United States, sandpipers’ vanishing is due to residential and industrial development and to changes in

E. in the northeastern United States, the sandpipers’ vanishing, a result of residential and industrial development and changing

我选A，因为我当时不知道sandpiper是什么东西，但我知道估计多半也不对，因为未画线部分似乎是在形容一种动物，但是B中的bird也不与the grassy fields and old pastures平行呀，为什么就对了呢？like是不是引导的主语应与主句主语并列？

Underscore part of A by itself is illogical: the sandpipers ... is a resulf of .... You may say "the vanishing of sandpipers is a result ...", but cannot say "the bird is a result". However, even though it is the case, the answer is still wrong - since "the vanishing of birds" is not parallel with "grassy fields and pastures".

As to B, you can understand it in the following way: Like the grassy fields and old pastures (which are vanishing), the bird itself is vanishing too....