2. 职称英语
  3. All ______is a continuous supply of electric power.A、that is neededB、what is ne

All ______is a continuous supply of electric power.A、that is neededB、what is ne

游客2023-09-23  45
问题 All ______is a continuous supply of electric power.
选项 A、that is needed
B、what is needed
C、which is most important
D、for our needs
答案 A
解析 本题考点为定语从句中关系代词的用法。在定语从句中，当先行词是all, something, nothing等不定代词；或先行词前有first，last，only，few，much， some，any，no等词修饰时；或先行词前有形容词最高级修饰时，一般只用that，而不用which来引导。例如：All that glitters is not gold. All that I want is peace and quiet.
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