- There are dark clouds, and the wind is blowing strongly.
- It ______ that a typhoon is coming.
A:feels
B:sounds
C:seems
D:looks
如图所示,AC为杠杆,O为支点,在B点处挂一个重物,请画出杠杆在如图所示位置平衡时,受到的最小动力F及其力臂L,并画出重物受到重力的示意图.