592. Quasars, at billions of light-years from Earth the most distant observable objects in the universe, believed to be the cores of galaxies in an early stage of development.
(A) believed to be
(B) are believed to be
(C) some believe them to be
(D) some believe they are
(E) it is believed that they are
Solution:
OG Solution:
Only B, the best answer, supplies a verb that grammatically connects Quasars and cores: Quasars . . . are believed to be the cores.... Choice A produces a sentence fragment because it omits the verb are and supplies only an adjectival phrase, believed to be .... Choices C, D, and E all introduce new clauses (some believe ..., it is believed...) that cannot grammatically complete the construction begun with Quasars.
Sentence Correction - 1000 Questions with Solution:
(A) believed to be
(B) are believed to be
(C) some believe them to be
(D) some believe they are
(E) it is believed that they are
Solution:
OG Solution:
Only B, the best answer, supplies a verb that grammatically connects Quasars and cores: Quasars . . . are believed to be the cores.... Choice A produces a sentence fragment because it omits the verb are and supplies only an adjectival phrase, believed to be .... Choices C, D, and E all introduce new clauses (some believe ..., it is believed...) that cannot grammatically complete the construction begun with Quasars.
Sentence Correction - 1000 Questions with Solution: