People used to wear special clothes to ______.
A) chase away the evil spirits C) show their happiness
B) please the good spirits D) show their anger

A．Evil spirits won't harm superstitious people.
B．Horoscopes can predict one's future.
C．Scientific knowledge can explain every uncertainty in nature now.
D．Tossing a bit of salt over one's left shoulder after spilling salt is a superstitious act.

A．When they used salt to melt snow.
B．When they started to preserve food with salt.
C．After they found animals licking salt.
D．After they found salt's magical powers.