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题库 / Prep2007E1-SC-122
Surveys have shown that in up to 40 percent of elderly people living independently in affluent countries, the consumption of one or more essential nutrients is insufficient or they have deficient levels of these nutrients in their blood.
in up to 40 percent of elderly people living independently in affluent countries, the consumption of one or more essential nutrients is insufficient or they have
in up to 40 percent of elderly people who live independently in affluent countries, they consume one or more essential nutrients insufficiently or have
in up to 40 percent of elderly people who live independently in affluent countries, one or more essential nutrients are consumed insufficiently or having
up to 40 percent of elderly people living independently in affluent countries who consume insufficient amounts of one or more essential nutrients or who have
up to 40 percent of elderly people who live independently in affluent countries consume insufficient amounts of one or more essential nutrients or have
可以确定排除的有C,D
C：or having不平行
D：countries who修饰错误
剩余选项比较模糊
A：they指代不明→这个比较难以判断，从their blood来看，their应该可以明确指代elderly people→当选项没有明确考察pronoun时，不过分考虑这个问题；这道题可能比较明显的错误在于or所要求的平行，A选项让两个句子进行比较平行，根据平行的定义，要求structurely and logically parallel, 这里的前后两句话结构既不相似，逻辑关系也不够强
B，prep笔记说是insufficiently修饰不当，我不是能够特别能够理解，而且这也不算一个逻辑清晰的判断点，其次，they的指代依然不能判断清晰与否
该题有待商讨。
其他：我最开始在纠结in up to正确与否，应该是正确的，up to 修饰后面的noun phrase:40 percent of elderly people,加上in 形成介词短语修饰comma后面的整个句子。
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