2. 职称英语
  3. Quasars, at billions of light-year from Earth the most distant observable object

Quasars, at billions of light-year from Earth the most distant observable object

游客2025-02-25  23
问题 Quasars, at billions of light-year from Earth the most distant observable objects in the universe, believed to be the cores of galaxies in an early stage of development.
选项 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
答案 B
解析 此句缺谓语动词，因此C、D、E结构全错，A中用主动语态错，应换为B中的被动语态。本句为believe to be的用法。
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