绿色启蒙：培养地球小卫士的环保书籍精选！
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1 . What do boys prefer to do on the Internet?
A.
They prefer to watch TV on computers.
B.
They prefer to get solutions for homework.
C.
They prefer to make friends with others.
D.
They prefer to spend time on computer games.
2 . The underlined phrase “drop off” in the third paragraph may mean “ _____”.
A.
get up
B.
pay for
C.
take over
D.
fall asleep
3 . What will happen if children spend over two hours online?
A.
They will suffer from lack of sleep.
B.
They will sleep for over eight hours.
C.
They will feel excited during daytime.
D.
They will create a new body clock.
4 . Dr Mari Hysing suggested that ______.
A.
people change the children’s sleeping time
B.
people find ways to stimulate nervous system
C.
people remove TV from children’s bedroom
D.
people should make children sleep as they could
