怎么算下期和值是多少

简介：The first thing I saw was Cheng Keshu, who was sitting in the third row in front of the classroom. She lowered her head and tidied her desk. Her ponytail was tied up smoothly behind her back. The morning sunlight came in through the gap between the windows and fell on her from a 45° angle. On her body, her eyelashes were long and low and covered with a layer of golden light, and her white jade-like face became more and more attractive as she looked at it.