某中学七年级二班李波同学制造了一个简单的机器人， 他遥控它每前进1 米就向左转30°， 问它需要经过 米才能回到原地.
12
-Mary has just broken up with her boyfriend.
-_________? I don't want to fall in love with her. [ ]
A. What if
B. What's wrong
C. What about you
D. What of it
中华母亲节是农历四月初二孟母生孟子日。
