A good laugh is like a mild workout. It exercises the muscles, gets the blood flowing, decreases blood pressure and improves sleep patterns and the immune system.__36__ ·Don’t take life too seriously. We all have obstacles in life and we all make mistakes.__37__ In fact, if you can laugh lightheartedly at your own fault, you’ll find that you give yourself that extra happiness and confidence increase that can get you over any obstacle. ·Find the humor in a bad situation. Sure, there are some situations where you are really sad.__38__ The next time you feel the stress levels risi以下几个实验现象中,能说明声音产生条件的实验现象是A.放在钟罩内的闹钟正在响铃,把钟罩内的空气抽走一些以后,铃声明显减小 B.使正在发声的音叉接触水面,水面溅起水花 C.吹笛子时,手指按住不同的孔便会发出不同的声音 D.把正在发声的收音机密封在塑料袋内,然后放入水里,人们仍能听到收音机发出的声音