Readthefollowingparagraphsandidentifythesentencethatisnotappropriateineachoftheparagraphs.阅读以下段落，选出每一段中不合适的句子删除。 (1)Somepeoplethinkthatteenagersshouldburythemselvesinallschoolsubjects.(2)Intheirview,learningvarioussubjectscannotonlyenlargeteenagers’knowledgebutalsopromoteall-arounddevelopment.(3)Additionally,comparedwiththosewhoonlyfocusononesubject,studentswithawiderangeofknowledgecanfinddifferentsolutionstodealwithproblemstheywillfaceeitheratworkorinlife.(4)Withtherapiddevelopmentofeconomyandtechnology,moreandmorejobsrequirepeopletobearmedwithprofessionalknowledge.(5)Lastbutnotleast,teenagersmaybeeasilyfedupwiththedullschoollifeiftheyconcentrateononespecialsubjectforalongtime,whiledifferentsubjectscanaddspicetotheirschoollife.(6)Meanwhilelearningallschoolsubjectsisusefulforteenagerstodiscoverwhattheyarereallyinterestedin.