SAT官方每日一题是collegeboard每天都会发布的题目，关于SAT考试的三个部分的各个题型。下面我们就一起来看一下2015年1月12日SAT官方每日一题吧。
Part or all of the following sentence is underlined; beneath the sentence are five ways of phrasing the underlined material. Select the option that produces the best sentence. If you think the original phrasing produces a better sentence than any of the alternatives, select choice A.
The North American continent, first colonized by people from Siberia, crossing the now sunken land bridge between Siberia and Alaska about 15,000 years ago.
(A) The North American continent, first colonized by people from Siberia, crossing
(B) People from Siberia first colonized the North American continent, who crossed
(C) First colonized by people from Siberia was the North American continent, they crossed
(D) First colonized by people from Siberia, who crossed the North American continent,
(E) The North American continent was first colonized by people from Siberia, who crossed
答案：E
题目：北美大陆最初被西伯利亚人开拓为殖民地，西伯利亚人曾在15000年前分布在西伯利亚和阿拉斯加之间的沉桥。
解析：A选项中没有谓语动词，B改变了句意，C中they指代错误，E的形式也改变了句子的愿意。
Choice (E) is correct. It avoids the sentence fragment error of the original by providing a main verb (“was”) to indicate the action taking place in the sentence.
以上就是关于2015年1月12日的SAT官方每日一题中改进句子的详细内容，包括了题目和选项以及答案，后面附有一道相关的练习题。大家可以在备考SAT的过程中关注SAT每日一题的内容，这样就可以更好有不间断的练习，也就能在日积月累的过程中得到提高。
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