题目

阅读理解 Skiing Park Price: 50 yuan/hour on weekdays 70 yuan/hour on weekends Open time: 10:00am-3:00pmFound A black sports bag. There is a basketball, a pair of running shoes in it. Tel:897-5897On sale All kinds of school things: bags, pens, rulers and pencils are cheaper now. [Discount(打折)40%this week] Welcome to Sun Stone on Bridge Street! Movies at Times Cinema today Crazy Stone: 8:30 am-9:30am The Long Weekend: 8:30 am-10:00am Hero: 2:30 pm-5:00pm Baby Plan: 6:00 pm-8:00pm Ticket price: 25 yuan Booking office:860-1120 (   ) 1A ¥30 pen costs             this we设集合A={x||x-a|<2}、,全集为R.(1)当a=1时,求:?RA∪?RB;(2)若A⊆B,求实数a的取值范围.
英语 试题推荐