比一比,组词语。
淹____
摇____
板____
悟____
掩____
谣____
版____
语____
A man says to his friend,"Guess how many coins(硬币) I have in my pocket(兜). "
The friend says. "If(如果) I guess right,will you give me one of them?"
The man says,"If you guess right,I'll give you both(两个都) of them. "
从右边起,第三位是____位。
一质点从A点以v0=3m/s的初速度开始作匀加速直线运动,随后依次经过B,C两点,已知 AB段、BC段距离分别为5m、9m,质点经过AB段、BC段时间相等,则( )