hello,everyone. today,I am on duty,it's sunny and everyone is here .I want to tell you something about inventions. We study everyday,.when we study at night,we need use light .everybody knows that
一、思想和仪表 Thoughts and instruments 1 、尊敬师长,团结同学,一切听从老师安排,如违反有关规章应谦虚接受批评,并做出书面检查。1, respect teachers, unite students, all obey the teacher arrangement, such as vio