gwd 7 -13 一道语法请教

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.

明白了　是句子意思．上的ｔｒｉｃｋ．　谢谢

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.

1. the sandpipers vanishing in the northeastern United States is a result of residential and industrial development and of changes in （the sandpipers与the grassy fields and old pastures一致）
2. the bird itself is vanishing in the northeastern United States as a result of residential and industrial development and of changes in （主语与like 的主语不致）

3. that the birds themselves are vanishing in the northeastern United States is due to residential and industrial development and changes to
4. in the northeastern United States, sandpipers’ vanishing is due to residential and industrial development and to changes in

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

ets 高深莫测 看起来不平行 意思上都能vanish 的主语

     选项是比较出来的，好多语法知识运用不能绝对

     D有一个致命错误，其实还是逻辑意思上的错误

    in the northeastern United States前后两个逗号隔开，不知道修饰什么。按照整个句子意思上来看，这个in the northeastern United States应该接在vanishing后才对

    至于比较的对等，ETS认为对等，我们没有办法。实在要理解，他们都就是vanish对等，不过这个很牵强

     再次说明，解语法题目，逻辑意思为先，语法知识为辅，不要过分拘泥于语法知识，上了ETS的鬼当

我相信这题有问题