2. 外语
  3. A. The Process of Laughter. B. Why Laughter Developed? C. Laughter and Other Creatures. D. Mordern Breakthrough in Humour for Th

A. The Process of Laughter. B. Why Laughter Developed? C. Laughter and Other Creatures. D. Mordern Breakthrough in Humour for Th

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问题 A. The Process of Laughter.
B. Why Laughter Developed?
C. Laughter and Other Creatures.
D. Mordern Breakthrough in Humour for Therapy.
E. Various After-effects of laughing.
F. Anticipatorv Effect on the Immune System.
*
选项
答案D
解析 见文中第二段第二句，本句向人们解释了笑声的基本形成是由于深深地吸入和呼出空气，可知D符合题意。
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