势成(chéng )骑虎,只(zhī )能一往无前了(le ),小孙(sūn )又(yòu )蹬上一(yī )个树杈,压得树杈弯弯欲(yù )折“咔咔”作响,千钧一发之际,他伸(shēn )手抓(zhuā )住挂着鞋(xié )的树杈用力一扳,树杈“喀嚓”折断,小孙快如闪电(diàn ),伸(shēn )手一个海底捞月,把下坠的皮鞋捞到手(shǒu )里,与此同时,小孙脚(jiǎo )下的树(shù )杈(chā )也(yě )“喀嚓”折断,他在下坠(zhuì )中猛地抱住(zhù )树干,“呼啦啦”地滑了下来。
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