13．The hospital called in the patient's family because the operation was toorisky（冒險的）．

分析 醫(yī)院請病人家人進來因為這個手術(shù)太冒險．

解答 答案：risky 考查翻譯填空．根據(jù)句意及句子結(jié)構(gòu)，要填入一個形容詞．risky意為"冒險的；有風(fēng)險的"．故正確答案是：risky．

點評 考查翻譯填空，準(zhǔn)確地翻譯句子、理解句子，然后根據(jù)句意及提示確定所填單詞詞性，寫出單詞完成句子，使句意更通順．

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