Our government has taken some measures to overcome the lack of electricity, but
题型：不详难度：来源：
Our government has taken some measures to overcome the lack of electricity, but it may take some time _____ we have enough power．| A．since | B．after | C．unless | D．before |
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答案
| D |
解析
| 考查固定结构。“It be+一段时间+before 从句”表示“一段时间以后某事才发生”，结合句意可知D正确。句意：我们的政府已经采取了一些措施来克服电力紧缺的问题，但是也许要一段时间以后我们才会有足够的电力。 |
举一反三
______ it is hoped that college students should be equipped with the ability to take a good set of notes, this is not always the case.| A．When | B．While | C．As | D．Unless |
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The job is great in terms of salary . It has its disadvantages, _______ .| A．though | B．however | C．even | D．therefore |
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Although the old lady has a daughter and two sons ,______ live with her．| A．none of whom | B．neither of them | | C．all of whom | D．none of them |
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______, but he insisted that he _____ to school ．| A．Though he was ill , went | B．He was ill, go | | C．Having been ill, should go | D．Having been ill , went |
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| Be patient with your students ______ it takes time for them to adjust to their new way of school life． |
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