问题
选择题
- _____ did he play soccer?
- About 3 hours.[ ]
A. How many
B. How much
C. How often
D. How long
答案
答案：D
搜题请搜索小程序“爱下问搜题”
- _____ did he play soccer?
- About 3 hours.[ ]
A. How many
B. How much
C. How often
D. How long
答案：D
、
、
。且知道两辆车加速度相同。问：