you please pass me a piece of paper? I need to write down the telephone number. [ ]A.Need B.Must C.S

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• 吸气时外界空气进入肺的正确途径是（）A．口-＞喉-＞咽-＞气管-＞支气管-＞肺B．鼻-＞咽-＞喉-＞气管-＞支气管-＞肺C．鼻-＞咽-＞喉-＞支气管-＞气管-＞肺D．鼻-＞喉-＞咽-＞气管-＞支气管-
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• 人体呼吸系统的组成是（）A．鼻腔和肺B．呼吸道和肺C．气管和肺D．呼吸道和气管-生物
• 人体呼吸系统的组成按顺序应当是（）A．鼻、咽、喉、支气管、气管、肺B．鼻、喉、咽、气管、支气管、肺C．鼻、咽、喉、气管、支气管、肺D．鼻、喉、咽、支气管、气管、肺-生物
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