2. 职称英语
  3. ______ cannot live without oxygen. [br] Which is more important for the burning

______ cannot live without oxygen. [br] Which is more important for the burning

游客2024-07-23  20
问题 ______ cannot live without oxygen. [br] Which is more important for the burning of a fire?
选项 A、Pure oxygen.
B、Air.
C、Coal.
D、Wood.
答案 B
解析 本题题干问“对于燃烧来说什么更加重要”。原文第3段指出空气中有足够的氧气可供燃烧，纯氧会让燃烧变快导致浪费。因此选项B．Air是正确答案。
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