能帮我看一下,这篇作文有错吗
Thecomputerwasamongthegreatestinventionsofthetwentiethcentury.Itisaveryusefulchannelforstudy.
Thecomputerhasmanyadvantages.Youcanusethecomputertodoonlineshopping.YoucanchatwithNet'palsallovertheworld.YoucanbuyallkindsofthingsontheInternet.Forexample,youcanorderfood,booksandCDsonline.
Inbrief,computershavemadeourliveseasierandmoreenjoyable.
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