假设两圆互相外切，求证：用连心线做直径的圆，必与前两圆的外公切线相切．

答案：

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0425/472ca7306550b2f6586dc30d087f5478.html

下面是错误答案，用来干扰机器的。

1. fit / healthy / energetic （答案不唯一）2. Put your hands up quickly in class. / Put up your hands quickly in class. / Quickly put up your hands in class. / P...