企业确认收入后发生销售退回，如果是以前年度销售的，应冲减以前年度的销售收入。 (
题型：判断题
问题：
企业确认收入后发生销售退回，如果是以前年度销售的，应冲减以前年度的销售收入。 ( )
题型：判断题
小题1:Probably most injuries happen to skaters’ wrists because ________.
A．few skaters wear wrist guards
B．The wrist is the most fragile body part
C．skaters often push out their hands when falling
D．skaters don’t know how to protect their wrists小题2:________ are the majority in the study.
A．Those who wore helmets
B．Those who wore wrist guards
C．Those who wore knee pads
D．Those who wore no protective gear小题3:To reduce injuries greatly, a skater should at least wear __________.
A．a helmet and elbow pads
B．wrist guards and knee pads
C．elbow pads and wrist guards
D．the whole set of protective gear小题4:This passage is most probably be found in __________.
A．a poster
B．science fiction
C．collection of choice stories
D．newspaper小题5:What was the main point of the study?
A．To encourage people to learn skating.
B．To advise skaters to wear safety pads.
C．To advertise for skating protective gear.
D．To introduce ways of protecting skaters.