2013gre考试：gre考试的句子意思怎么理解到位

1)The Environmental Protection Agency's proposal to place restrictions on both diesel fuel and diesel engines has sparked a counterattack by the oil industry, saying that the move will exacerbate the nation's fuel supply problems.

A. on both diesel fuel and diesel engines has sparked a counterattack by the oil industry, saying.

B. on both diesel fuel and engines have sparked the oil industry to counterattack, and they say.

C. on both diesel fuel and diesel engines has sparked a counterattack by the oil industry, which says.

D. both on diesel fuel and engines has sparked the oil industry to a counterattack, saying.

E. both on diesel fuel and diesel engines have sparked the oil industry to counterattack, and it says.

C和A的区别是啥?就是say这个动作到底是industry发出，还是全句的主语proposal 发出。这个时候不能根据A认为是saying，就把其它选项杀掉，而应该根据全句的句意，判断说出这话的应该是industry，因为proposal不会自己反对自己，只有石油工业才会反对那个限制柴油机使用的proposal。这背后的判断标准是什么?就是传说中的逻辑，动作发出者与动作的合理对应。

The ability of scientists to provide models of the atmosphere's complex responses to changing conditions, like seasonal and daily cycles or different planetary conjunctions, have become ever more accurate.

(A) The ability of scientists to provide models of the atmosphere's complex responses to changing conditions, like seasonal and daily cycles or different planetary conjunctions, have become ever more accurate.

(B) The ability of scientists has become ever more accurate in providing models of the atmosphere's complex responses to changing conditions, such as seasonal and daily cycles or different planetary conjunctions.

(C) Scientists have become able to provide ever more accurate models of the atmosphere's complex responses to such changing conditions as seasonal and daily cycles or different planetary conjunctions.

(D) Scientists have become ever more accurate in their ability for providing models of the atmosphere's complex responses to changing conditions, like seasonal and daily cycles or different planetary conjunctions.

(E) Scientists' ability to provide models of the atmosphere's complex responses to such changing conditions as seasonal and daily cycles or different planetary conjunctions have become ever more accurate.

请注意在每个选项里面accurate的修饰对象， ABE是能力， D是科学家，C是模型。不比不知道，一比就清楚了，应该修饰的是模型。这道题目属于选项意思之间差异较大的，但确定哪个意思正确，也不是依靠所谓的“原句”，而是修饰和被修饰者的合理对应，比如你不能用婀娜来修饰男人，不能用精确来修饰眉毛，对吗?

(4)A选项到底有没有特殊地位?

这个问题只能作为猜想。对于命题者，这个是很好的调控难度的工具。如果想降低难度，把能反映句意的选项设为A，则能帮助考生较快获得句意，如果想加大难度，则把唧唧歪歪的选项设为A。在这个问题上，主动权全部在GMAC。