A:①②
B:③④
C:②③
D:①④
His terrible look ____ me but I was not afraid. (surprise)
The boats take different routes, but they all____ in the same place.
当如图所示的手摇发电机大轮缓慢转动时,演示电流表的指针将( )
下列现象中,属于光的反射现象的是()