本文进行GMAT 语法比较题进行了汇总。希望考生充分利用文中整理内容，提高备考效率。
1.No less an authority than Walter Cronkite has reported that half of all Americans never read a book.
(A) No less an authority than
(B) Nonetheless an authority
(C) Nevertheless authoritarian
(D) Not less an authority than
(E) An authority not less than
the key:A
no less---than:used to emphasize that the person or thing you are talking about is important or impressive
2.Nowhere in Prakta is the influence of modern European architecture more apparent than their government buildings.
(A) more apparent than their
(B) so apparent as their
(C) more apparent than in its
(D) so apparent than in their
(E) as apparent as it is in its
the key: C
3.Once positioned in space, the Hubble Space Telescope will capture light from sources twenty times fainter compared to those that can be detected by ground-based instruments.
(A) compared to those that can be detected
(B) compared to those they can detect
(C) than that can be detected
(D) than those that can be detected
(E) than those detecting
the key:D
比较考点：比较对象。sources——those that can be detected
4.One reason why more young people lose their virginity during the summer than at other times of the year undoubtedly is because school vacations give adolescents more free time.
(A) One reason why more young people lose their virginity during the summer than at other times of the year undoubtedly is because
(B) If young people lose their virginity more during the summer than other seasons, it is undoubtedly because
(C) One undoubtable reason that young people lose their virginity more during the summer than other times is
(D) One reason more young people lose their virginity during the summer than at other times of the year is undoubtedly that
(E) Young people lose their virginity more often during the summer undoubtedly because, for one reason,
the key：D
比较考点：比较对象。during the summer——at other times of the year
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