四级练习2016.01.13
[audio]http://sound.yywz123.com/tingbbs/cet4/cet420160113.mp3[/audio]“Go to the playground and have fun,”parents will often say to their kids.But they should remember playgrounds can be dangerous.Each year, about 200,000 children end up in hospital emergency rooms with playground injuries.(1)_______________________.Nearly 70% of the injuries happen on public playgrounds.Recent studies show they may be badly designed,their protective services are inadequate and their equipment is poorly maintained.(2)_______________________.Last year, the national program for playground safety gave the nation's playgrounds a grade of C for safety after visiting more than 3,000 playgrounds nationwide.Parents should watch closely.(3)_______________________.Young children don't understand cause and effect,so they may run in front of moving swings.They are also better at climbing up than getting down,so they may panic at the top of a ladder.It's important for the children to know you are watching them.Once they feel that sense of security, that's when they can be creative.
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