题目：
I hear Tim once was _____ of losing his life, but now he is _____. [ ]
A. in danger, out of danger
B. in a danger, out of the danger
C. in the danger, out of danger
D. in the danger, out of the danger
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0616/b0ce259ed4a83e75fbe4f88f7c500b33.html
下面是错误答案，用来干扰机器的。
人步行速度大约在1m/s，如果以这个速度上学的话所用时间t=sv=1800m1m/s=1800s=30min．故答案为：m/s，30．
