Languages are remarkably complex and wonderfully complicated organs of culture. They contain the quickest and the most efficient means of communicating within their respective culture. To learn a foreign language is to learn another culture. In the words of a poet and philosopher, "As many languages as one speaks, so many lives one lives." A culture and its language are as necessary as brain and body; while one is a part of the other, neither can function without the other. In learning a foreign language, the best beginning would be starting with the non-language elements of the language: its gestures, its body language, etc. Eye contact is extremely important in English. Direct eye contact leads to understanding, or, as the English saying goes, seeing eye-to-eye. We can never see eye-to-eye with a native speaker of English until we have learned to look directly into his eyes.
Languages are remarkably complex and wonderfully complicated organs of culture. They contain the quickest and the most efficient means of communicating within their respective culture. To learn a foreign language is to learn another culture. In the words of a poet and philosopher, "As many languages as one speaks, so many lives one lives." A culture and its language are as necessary as brain and body; while one is a part of the other, neither can function without the other. In learning a foreign language, the best beginning would be starting with the non-language elements of the language: its gestures, its body language, etc. Eye contact is extremely important in English. Direct eye contact leads to understanding, or, as the English saying goes, seeing eye-to-eye. We can never see eye-to-eye with a native speaker of English until we have learned to look directly into his eyes.
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应用多导睡眠图（PSG）进行睡眠监测时，睡眠潜伏期是指（）。
\tA.从PSG记录开始至α解体开始的时间
\tB.从PSG记录开始至睡眠纺锤波出现的时间
\tC.从PSG记录开始至REM睡眠开始的时间
\tD.从PSG记录开始至NREM睡眠Ⅰ期开始的时间
\tE.从PSG记录开始至NREM睡眠Ⅱ期开始的时间
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