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Warning: fclose() expects parameter 1 to be resource, bool given in /www/wwwroot/www.wendadaohang.com/inc/function.php on line 2475 小明从1楼走到3楼要18秒.那么小明从1楼走到6楼,要走多少秒?那么,54秒小明从1楼能走到几楼 - 55问答网