My parents live in a small village. They always keep candles in the house ___ th
题型：不详难度：来源：
My parents live in a small village. They always keep candles in the house ___ there is a power cut.| A．if | B．unless | C．in case | D．so that |
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答案
| C |
解析
| 根据句意可知留蜡烛在家里是为了以防万一停电。in case意为“以防万一”；if 引导条件状语从句,意为“如果”；unless引导让步状语从句,意为“如果不”；so that引导目的状语从句,意为“为了”。 |
举一反三
The field research will take Joan and Paul about five months;it will be a long time_____we meet them again.| A．after | B．before | C．since | D．when |
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| Reality is not the way you wish things to be, nor the way they appear to be, ___ the way they actually are. |
1 won’t call you, ________ something unexpected happens.| A．unless | B．whether | C．because | D．while |
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The field research will take Joan and Paul about five months; it will be a long
time ____ we meet them again.| A．after | B．before | C．since | D．when |
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You will be successful in the interview ____ you have confidence.| A．before | B．once | C．until | D．though |
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