问题
选择题
It's said that the sports meeting will be because of the heavy rain.[ ]
A. put out
B. put off
C put away
D. putin
答案
答案：B
搜题请搜索小程序“爱下问搜题”
It's said that the sports meeting will be because of the heavy rain.[ ]
A. put out
B. put off
C put away
D. putin
答案：B
沿中垂线MN运动，不计重力，则（ ）