变字小魔术。     

例：直+(木)=植

丁+火= (     )    古+(     )=(     )  鸟+(     )=(     )

例：底—广+ 亻=低

线—(    )+(    )=钱     桥—(     )+(     )=轿     (     )—(     )+(     )=池

The writer makes it obvious that______

A．sleepwalkers are often awakened by dangers

B．the underlying cause of sleepwalking is more serious than sleepwalking itself

C．most sleepwalkers are deranged or insane

D．All of the abov