GWD-9-2

GWD 9-2

In an attemp to produce premium oysters, a firm in Scotland has developed a prototype of a submersiable oyster farm, sitting below the surface of the ocean, and it provides ideal conditions for the mollusk's growth.

A. farm, sitting below the surface of the ocean, and it provides

B. farm, sitting below the surface of the ocean for providing

C. farm that sits below the surface of the ocean and providing

D. farm that sits below the surface of the ocean and provides

E. farm that is sitting below the surface of the ocean and it provides

B怎么不对呀，答案是D。是不是“，doing”只能表示前面句子造成的结果呀？

有没其他功能？请问这题好象还在什么地方出现过？哪个NN能回忆起来？

doing可以表示１与谓语动词同时发生、２结果

Ｂ中sitting的逻辑主语是a firm，这就与原意不符；for的使用也有些问题。