单项选择题A.Because they were not easily burned and can last long.B.Because they were very cheap materials.C.Because they could be found here and there.D.Because they could add artistic value to buildings.
单项选择题A.Those dream interpretations are based on psychological thesis.B.We can find nothing reliable in those interpretations.C.Some dream interpretations have scientific support.D.Most of the interpretations of dreams are not very believable.