Small sailboats can easily turn over in the water ______ they are not managed ca
题型：不详难度：来源：
Small sailboats can easily turn over in the water ______ they are not managed carefully. | A．though | B．before | C．until | D．if |
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答案
| D。 |
解析
| 由语境逻辑可知，没有被小心驾驶是帆船在水中容易倾覆的条件，因此该空应填if引导条件状语从句。 |
举一反三
Leave your key with a neighbor _______ you lock yourself out one day. | A．ever since | B．even if | C．soon after | D．in case |
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My parents live in a small village. They always keep candles in the house_____there is a power out. | A．if | B．unless | C．in case | D．so that |
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that Marie was able to set up new branches elsewhere. | A．So successful her business was | | B．So successful was her business | | C．So her business was successful | | D．So was her successful business |
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They went on well at first but eventually everything ______ they had worried about happened．| A．which | B．what | C．that | D．when |
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The small mountain village we spent our holiday two years ago lies in Hubei.| A．what | B．where | C．that | D．which |
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