sat 找错误The problem of water pollution,frequently compounded(

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sat 找错误
The problem of water pollution,frequently compounded(是动词?还是过去分词做状语?如何区分呢?) in certain areas because the treatment and release of industrial wastes are not adequately regulated.（P954.2）
\x05(A) pollution,frequently compounded in certain areas because
\x05(B) pollution,frequently compounded in certain areas and\x05
(C) pollution,frequently compounded in certain areas when
\x05(D) pollution is frequently compounded in certain areas where
(E) pollution is frequently compounded in certain areas and
答案给的是A 其他的是怎么错的?我选的D,A为什么对?

1.【compounded(是动词?还是过去分词做状语?如何区分呢?) 】
是动词,有很多原因.首先,这句话主语在前面而且用逗号隔开了,在compounded这小句里面没有主语,如果它是过去分词作状语,那它用来修饰谁呢?再者,如果它是过去分词作状语的话,那它相当于一个形容词,从意思上看,副词 frequently 修饰形容词 compounded ,意思是“频繁地混合的”.再退一步说,如果说 frequently compounded 是本文里合理的形容词这个说法说得过去,那接上后文,怎么又不通了呢?答案只有一个,【compounded是动词的过去时】
2.选项A的话,“the treatment and release of……”解释的是上述的“problem”“为什么会出现”.而选D的话,“the treatment and release of……”解释的是“为什么出现在”“这个area”.一个强调原因,一个则侧重地点.
【网上找不到解析,全都是自己打出来的.我也在准备sat,呵呵,欢迎追问,望采纳!】

sat 找错误The problem of water pollution,frequently compounded( Pollution problem和the problem of the pollution 区别 Was water pollution a problem before the (c )of the factory. How to solve the problem of pollution in nowadays 英语翻译The problem of “white pollution” caused by used plastic Difficult as the problem of pollution is_______,no one shoul why the problem of pollution befalls human beings 一道SAT语法题Although one of the (most frequently) taught of Will 用英文回答what is the cause of water pollution? what factors influence the situation of water pollution? Once you have cured the water pollution problem,you will hav 英语翻译The uniaxial compressive strength of compounded phosphor