A. -- Keep right/left
B. -- No passing
C. -- Reduce your speed/Slow
D. -- Road closed ahead
E. -- No cycling
F. -- Lost and found
G. -- One way
H. -- No photos
I. -- For use only in case of fire
J. -- Hands off
K. -- Luggage depository
L. -- Do not enter ( )行李存放处 ( )禁止通行

A．Parents should choose friends for their children.
B．Children should choose anything they like.
C．Parents should understand their children better.
D．Teenagers should only go to their friends for help.

A．dreams are recorded about five minutes after the end of each dream
B．if the dreamer is awoken immediately after his dream, he can usually recall the entire dream.
C．it is found that what happens during the day often affects what one dreams
D．dreams’ contents are analyzed according to the brain waves recorded