首先说C:
103. Students in the metropolitan school district lack math skills to such a large degree as to make it difficult to absorb them into a city economy becoming ever more dependent on information-based industries.
(C) lack of math skills is so large as to be difficult to absorb them into a city’s economy that becomes
C的them只能指代skills
说实话,这个也是问了我老婆才彻底清楚的(她英语专业八级上了90分)
把C填进去,变成了Students in the metropolitan school district lack of math skills is so large as to be difficlut to absorb them into a city's economy that becomes ever more dependent on information-based industries.
这句话的主语是谁?Students不可能是主语,students是一个什么都不是的成分,主语是lack,students顶多是修饰lack的。lack是单数,不可能被them指代,所以them只能指代skills.
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