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题库 / GMATLA-SC-60
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.
on both diesel fuel and diesel engines has sparked a counterattack by the oil industry, saying
on both diesel fuel and engines have sparked the oil industry to counterattack, and they say
on both diesel fuel and diesel engines has sparked a counterattack by the oil industry, which says
both on diesel fuel and engines has sparked the oil industry to a counterattack, saying
both on diesel fuel and diesel engines have sparked the oil industry to counterattack, and it says
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
错选B。先用split的方法根据both on 选出abc。A，saying动作发出者错误；B，and they say,and之后句子不能表示结果，要用and thus+，前面have应该是has。粗心错误。
A错，saying的发出者是counterattack，反击。所以不能做伴随状语，否则会被以为是修饰proposal。C which指代counterattack，正确。
读懂语义
A和C的差别主要在于say的这个主语到底是谁，A的发出者是proposal， C是oil industry，相比之下应该是后者更合理
逗号+ing要么指代前面整个句子，要么指代主句的主语。不能指代逗号之前的词
每周答疑（2017年5月18日） [回放] 中有这个题目的讲解； 根据平行结构的要求，先排除BD；同时根据主谓单复数关系，排除（B）E；
A和C的差别主要在于say的这个主语到底是谁，A的发出者是proposal， C是oil industry，相比之下应该是后者更合理；
【转自 https://www.manhattanprep.com/gmat/forums/sc-the-en-t9524.html】希望有所帮助。
Ron 大神：COMMA + -ING modifiers modify the ENTIRE PRECEDING CLAUSE (including the subject of that clause).
A/C 选项，say是oil industry 的动作，所以用which says而不用saying。
此题A和C希望老师能讲解一下。
貌似saying和which says都可以跳跃修饰counterattack的样子。。。
一般，句末的逗号+ing短语均可以被认为成伴随状语哟～
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请问：A选项的saying照理应该可以做industry的定语的。怎么错了？In the past several years, astronomers have detected more than 80 massive planets, most of ......., circling other stars.这个就可以啊。
你看看后面的逻辑意思应该是：这个行动会加剧能源问题。所以which跳过介词短语指代counterattack（反击）
嗯，有些明白了。
再看，感觉不大对啊。industry应该是可以saying的，既然他可以发起counter attack这个动作。
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