It is said that potato chips ____________ by mistake about a hundred years ago.A
题型：不详难度：来源：
It is said that potato chips ____________ by mistake about a hundred years ago.| A．invent | B．invented | C．are invented | D．were invented |
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答案
| D |
解析
| 考察时态及语态。句意；据说炸薯片是100年前错误的被发明的。结合语境可知本句描述的是过去的状态，故用一般过去时态。句子主语是动作对象，故用被动语态。选D。 |
举一反三
If you don’t go to the meeting tomorrow, _______________.| A．he will, too | B．he won’t, either | C．he does, too | D．he doesn’t, either |
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-- __________ you __________ breakfast?
-- Yes, I had it at 6:30. | A．Had; had | B．Have; had | C．Are; having | D．Were; having |
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—May I speak to John?
---Sorry, he Japan. But he in two days.| A．has been to; will come back | B．has gone to; will come back | | C．has been in; would come back | D．has gone to; come back |
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His father______ for ten years.| A．has died | B．has been dead | C．died | D．was dead |
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Thousands of people______ after the powerful earthquake happened in Wenchuan on May 12th.| A．die | B．dead | C．were saved | D．are saving |
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