L9(2)：Flying cats
All these cats had one experience in common: they had fallen off high buildings, yet only eight of them died from shock or injuries.Of course, New York is the ideal place for such an interesting study，because there is no shortage of tall buildings. There are plenty of high-rise windowsills to fall from！One cat, Sabrina, fell 32 storeys, yet only suffered from a broken tooth. 'Cats behave like well-trained paratroopers.' a doctor said. It seems that the further cats fall, the less they are likely to injure themselves. In a long drop, they reach speeds of 60 miles an hour and more. At high speeds, falling cats have time to relax. They stretch out their legs like flying squirrels. This increases their air-resistance and reduces the shock of impact when they hit the ground.
任务配置：
L0+L4
练习感悟：
已经完全搞不清读的是哪一课了，放水放的太严重了，完全忘记了，以为已经到第十课了。
幸亏Helen提醒了我，然后以亢奋的心情录了第九课的第二部分，因为期间不停受到干扰，让我恨不得一口气都不换的顺利读完。说好的早睡早起，完全没有做到。
