题目

Hello，everyone! It's the time of year again! Hualin's fantastic sale! You name it，and we have it at a very good price．Do you like them at low（低的）prices? We have sweaters in all colors at 50 yuan each! Do you need a bag for sports or school? We have great bags for just 6 yuan! For young boys and girls，we have T-shirts in red，green，yellow，orange，blue and black for only 15 yuan! And socks in all colors for just1 yuan! And that's not all．Can’t believe it? Come down to Hualin and see for yourself l 1．This passage is _________． A．a story               5．甲乙两台柴油机，甲的效率低于乙的效率，意义是（　　）A．甲的功率大于乙的功率B．工作相同时间甲消耗的燃料一定比乙少C．乙将燃料燃烧放出的能量变成有用功的那部分能的比例比甲大D．甲消耗的燃料多于乙消耗的燃料