一、研究背景我的母亲是一位中学英语教师,常在家批阅学生的标准化考试答题卡。她通常先用小刀将答题卡上正确答案的选框镂空,制作一张标准化考试答案卡,然后用它阅卷。但制作这种卡费时又费力,一不小心还容易伤到手指。我想设计、制作一种类似于打孔器的工具,它的使用轻松简易,安全高效,有了它的帮助,妈妈就可轻松制成答案卡了。二、设计方案这种工具的主要功能,是将答题卡上的ABCD选项方框镂空,我联想到冲床,它可以将铁片镂空出模子规定的形状。这种工具要坚 First, the research background My mother is a high school English teacher, often at home, students’ standardized test answer cards. She usually uses a knife to open the checkboxes for correct answers on the answer sheet, makes a standardized test answer card, and then scrolls it. However, the production of such a card fee and laborious, accidentally also easy to hurt the fingers. I want to design, make a similar punch tool, its easy to use, safe and efficient, with its help, mom can easily make the answer card. Second, the design program The main function of this tool is to answer the card on the ABCD option box hollowed out, I think of the punch, it can be ironwork out of the mold prescribed shape. This tool should be strong