how to solve the problem, the little boy turned to his father for help.A．N
题型：不详难度：来源：
how to solve the problem, the little boy turned to his father for help.| A．Not knowing | B．Having not known | | C．Not having been known | D．Not known |
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答案
| A |
解析
| 考查现在分词的否定做状语，句意是：不知道怎么解决问题，小男孩向父亲求助。The boy和know是主动关系，not发在现在分词前面。选A。 |
举一反三
Some people are sitting on the grass; others are walking along the lake, ______ .| A．chatting and to laugh | B．to chat and to laugh | | C．chatting and laughing | D．chatted and laughed |
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______ by many well-known experts and film stars, the product was very popular at one time.| A．To advocate | B．Having advocated | C．Advocating | D．Advocated |
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The explorer traveled to several remote villages, _____a lot of unusual information.| A．gathering | B．having gather | C．to gather | D．gathered |
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A cool rain was falling, _____________ with snow, causing heavy traffic．| A．mixing | B．mixed | C．to mix | D．having mixed |
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The 8.8 quake in central Chile caused widespread damage,destroying lost of buildings and hundreds of thousands Of people__________ .| A．to affect | B．affecting | C．affect | D．affected |
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