题目

Talking is the most effective and satisfying way of communication with others. There are many forms of communication, ___61___ include: texting, cell phones, email, and social media. ___62___ (use) these alternative forms to communicate with others may be faster, ___63___ it lacks many qualities that a face-to-face conversation ___64___ (possess). Facial expression and body language can ___65___ (great) affect a conversation. They can be used to give a person some information about what the other person ___66___ (think) and feeling. Facial expressions can be applied to video chatting, 如图所示，两平面镜相互垂直．请根据光的反射定律，画出经过平面镜后的反射光线，并标出第二次反射后反射角的大小． （______）