Let me tell you something very important： Never have water near you when you have something electric not far away! Last month， my family experienced a terrible thing．

My brother Tom had just received a new train set． We decide to build a little "world" for it with mountains， streetlights and even a lake． We found a large board that was big enough to hold the train．We spent over a week building the things with paper and cardboard．

When we finished all the things，we showed everyone our new train set．It was very wonderful．Now，it was time to turn it on． I flipped the switch and the train began to move． Everyone was excited．

I turned to look at Tom， and he looked strange．He was shaking．"Tom!" 1 shouted．He didn't move， looking straight ahead．Suddenly，my dad realized What was happening He reached quickly for the switch and turned off the train．

The water had leaked （漏） from the bag under the board and arrived where Tom was standing．One of our wires had fallen under the table and was touching it．We sent Tom to the hospital．And luckily Tom was fine． He told us that when the electricity was on， he could not move at all!

We learned a lesson that day． Never mix electricity and waters! It's too dangerous．

（1）How long did it take them to build the little "world"？ 　　

A．	A month．
B．	Over a month．
C．	More than a week．
D．	Less than a week．

（2）The underlined word "it" in Paragraph 5 refers to 　　．

A．	the board
B．	the water
C．	the bag
D．	the table

（3）Which of the following is TRUE according to the passage？ 　　

A．	After finishing the train set， my dad turned it on．
B．	There were mountains，bridges and a lake on the large board．
C．	Tom couldn't move at all when the electricity was on．
D．	I found Tom was strange and then I turned off the switch quickly．

（4）According to the passage， we should remember to 　　．

A．	stay away from water
B．	have something electric near us
C．	take good care of the young
D．	keep water away from electricity