Manychildrenwanttobuycomputers(1)theyliketoplaycomputergames,（2）theydon'tknowplayingthemforalongtimeisbadfortheireyes,（3）welookaroundwecanseemanychildrenbegintowearglasseswhentheyaresix（4）

　　Manychildrenwanttobuycomputers(1)theyliketoplaycomputergames,（2）theydon'tknowplayingthemforalongtimeisbadfortheireyes,（3）welookaroundwecanseemanychildrenbegintowearglasseswhentheyaresix（4）sevenyearsold.（5）parentsandteachersshouldtellthose.childrennottoplayatthecomputersforalongtime.Computersareveryuseful（6）computergamesareveryinteresting,（7）weshouldtakegoodcareofoureyes.

　　1．A．butB．soC．because

　　2．A．butB．soC．and

　　3．A．butB．andC．if

　　4．A．orB．butC．so

　　5．A．ButB．SoC．Or

　　6．A．butB．andC．so

　　7．A．andB．butC．so