题目内容
He went home for lunch____ the clock struck twelve.
| A．while | B．immediately | C． right away | D．at once |
B
解析试题分析：本题中的immediately已经转换成连词“一…就…”，相当于as soon as…；句义：钟一敲12点，他就回家吃饭了。While当…时；然而；尽管；CD两项都是短语，不能在句中做连词引导从句。故B正确。
考点：考察连词辨析
The poor child stood there, and ________ what to do, turned to his father for help.
| A．not knowing | B．not knew | C．not to know | D．not know |
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| A．being informed | B．informed |
| C．informing | D．to be informed |
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| A．in turn | B．in fact | C．in short | D．in return |
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| A．involved | B．being involved | C．having involved | D．to be involved |
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| A．decision | B．situation | C．impression | D．position |
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| A．hold up | B．keep up |
| C．set up | D．take up |
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| A．given up | B．put up |
| C．taken up | D．held up |
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| A．knock off | B．take off |
| C．keep off | D．break off |