题目

        Do you want to take time to get in touch with yourself, your feelings, your dreams, and a good, healthy life? Here are some tips:         36.                 Sometimes it seems as if our culture has begun to view the need for sleep as a sign of weakness. But your body was genetically(基因地) programmed to spend a third of its life on sleep, and this affects thinking, memory, growth, your immune(免疫的) system and even your weight.         Begin the day in thankfulness. 37                 Name each person and hold them in yo6．如图所示实验装置可用于制取乙炔．请填空：（1）A管的作用是调节水面的高度来控制反应的发生和停止，制取乙炔的化学方程式是CaC2+2H2O→Ca（OH）2+CH≡CH↑．（2）乙炔通入KMnO4酸性溶液中观察到的现象是高锰酸钾溶液褪色，乙炔发生了氧化反应．（3）乙炔通入溴水的CCl4溶液中观察到的现象是溴的四氯化碳溶液褪色．（4）为了安全，点燃乙炔前应检查乙炔的纯度，乙炔燃烧时的实验现象是明亮火焰并伴有浓烈的黑烟．