2. 专升本
  3. When Edison died, it was proposed that the Americans ______ all power in their homes, streets and factories for several minutes

When Edison died, it was proposed that the Americans ______ all power in their homes, streets and factories for several minutes

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问题 When Edison died, it was proposed that the Americans ______ all power in their homes, streets and factories for several minutes in honor of this great man.
选项 A、turn off
B、turned off
C、must turn off
D、would have turned off
答案A
解析 句意：爱迪生去世时，有人建议美国人关掉家中、街道上和工厂里所有的电源几分钟来纪念这位伟人。本题考查虚拟语气。It is／was proposed that…其后的从句用虚拟语气，动词形式为“should+动词原形”，should可省略。
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