2. 职称英语
  3. Only outside the Earth’s atmosphere ______ to attain extremely high velocities.A

Only outside the Earth’s atmosphere ______ to attain extremely high velocities.A

游客2023-10-14  67
问题 Only outside the Earth’s atmosphere ______ to attain extremely high velocities.
选项 A、to be safe for a space vessel
B、is safe for a space vessel
C、for a space vessel to be safe
D、a space vessel to be safe
答案 B
解析 only为含有否定意义的副词，位于句首时谓语要部分倒装，而且只有B选项含有谓语动词。
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