早产儿肺发育不成熟，表面活性物质缺乏，易发生（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30907' and id < 2487130 and id<>'2487130' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30907' and id > 2487130 and id<>'2487130' order by id asc limit 5