下列降糖药中，必须注射给药才能起效的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30297' and id < 2449758 and id<>'2449758' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30297' and id > 2449758 and id<>'2449758' order by id asc limit 5