下面是3道SAT语法改进句子练习题的内容，后面附有正确答案。SAT语法改进句子题目对考生的要求相对比较严格，是大家在语法备考中应该关注的重点。下面我们来看看这3道题目的详细内容吧。

　　1.Unlike the other major planets, Pluto has a highly eccentric orbit, which is thus closer to the Sun than Neptune is for 20 years out of every 230-year cycle, even though it is commonly described as the remotest planet in the solar system.

　　(A) Pluto has a highly eccentric orbit, which is thus closer to the Sun than Neptune is

　　(B) Pluto has a highly eccentric orbit and is thus closer to the Sun than Neptune is

　　(C) Pluto&aposs orbit is highly eccentric and is thus closer to the Sun than Neptune

　　(D) the orbit of Pluto is highly eccentric and thus closer to the Sun than Neptune

　　(E) the orbit of Pluto is highly eccentric, thus closer to the Sun than Neptune is

　　2.The agreement, the first to formally require industrialized countries to cut emissions of gases linked to global warming, is a formal protocol by which 38 industrialized countries must reduce emissions of these gases by 2012 or face heavy penalties.

　　(A) by which

　　(B) for which

　　(C) under which

　　(D) such that

　　(E) wherein

　　3.The population of India has been steadily increasing for decades, and it will probably have what is estimated as 1.6 billion people by 2050 and surpass China as the world&aposs most populous nation.

　　(A) it will probably have what is estimated as

　　(B) they are likely to have

　　(C) the country will probably have

　　(D) there will probably be

　　(E) there will be an estimated

　　Correct answers:1.B 2.C 3.C

　　以上就是这3道SAT语法改进句子练习题目的全部内容，后面的答案没有详细的解析。大家在备考中，可以根据自己的实际情况，查找具体的知识点，这样的记忆效果更好，也更加利于考试答题。

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