Question

英语四级长句成分分析 一个句子怎么又有两个主语？

While the emphasis on teaching to higher, test-driven standards as set in No Child Left Behind resulted in significantly better performance in elementary(and some middle)schools, high schools for a
variety of reasons seemed to have made little progress.
从句While the emphasis on teaching to higher虽然怎么样······第一个句子test-driven standards as set in No Child Left Behind resulted in significantly better performance in elementary(and some middle)schools

第二个句子high schools for a variety of reasons seemed to have made little progress. 有人说第一个句子和从句是在一块的，但如果这样怎么能用逗号隔开呢！ 这是四级的文章 是文章不严谨么？

Answer 1

While the emphasis on teaching to higher, test-driven standards as set in No Child Left Behind resulted in significantly better performance in elementary(and some middle)schools, 是从句部分，the emphasis on teaching to higher, test-driven standards as set in No Child Left Behind 是从句的主语，resulted是从句的谓语动词，high schools for a variety of reasons seemed to have made little progress是主句。不存在一个句子又有两个主语的情况。大体意思是，尽管对……的强调在小学（及部分中学）成效显著，中学由于种种原因却没有取得什么进展。

Answer 2

是你自己分句子分错了。

higher, test-driven standards 这个是一个词组，这样能读懂了么？

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可以用逗号隔开么，不是一般两个形容词用and连接 三个才会有逗号么？

Answer 3

high schools for a variety of reasons， seemed to have made little progress

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？？？没看懂········