问题标题：
改错10个.今天回答我急啊谢withadevelopmentofscienceandtechnology,80ofchina'sfamilieshaveasatelliteTV,offeredasmanyas50channels.thishascausedbyaheateddebateontheimpactogtelevisiononchildren.whichconcernsmanyp
问题描述：
改错10个.今天回答我急啊谢
withadevelopmentofscienceandtechnology,80ofchina'sfamilieshaveasatelliteTV,offeredasmanyas50channels.thishascausedbyaheateddebateontheimpactogtelevisiononchildren.whichconcernsmanyparentsisthattheirchildrenarenotgettingasmuchexercisetheyshould.then,somestudieshaveshownthatwatchingtoomuchtelevisionhaveaffectedtheirperformanceatschool.moreover,theeffectonchildren'smindsismoreseriousthantheonesonchildren'sbodies,especiallywhenthechildrenaresoyoungtojudgewhatprogramssuitthem.soparentsshouldtryhisbesttolimitthetimechildrenspendwatchingTV
谢
蒋新生回答：
Withthe(a改the)developmentofscienceandtechnology,80percent(加percent)ofchina'sfamilieshaveasatelliteTV,offering(offered改offering)asmanyas50channels.thishascaused(去掉by)ahea...
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