帮写英语作文 题目请自拟、The library is begin for five days.From Monday to Friday,at 5:00to 6:00PM.And on Sateday morning,it is for 8:00 AM to 11:30 AM.Rember you can't speak loudly,ate anything,use telephone and somking.The important is you can't take out the book or the magzian to the library.如果能帮到您,请给个最佳,
阅览室门口挂着一个牌子。 (1)晚上8:00=20:00,20:00-8:00=12小时(2)下午6时30分=18:30,20:00-18:30=1小时30分
阅览室每天8时30分-12时和13时-16时30分开放,那么阅览室全天开放多长时间? 8时30分-12时:时间段是3小时30分13时-16时30分:时间段是3小时30分全天开放时间:3小时30分+3小时30分=7小时