论文部分内容阅读
一、精心选一选——慧眼识金(每小题3分,共36分)1.下列图形经过折叠不能围成一个棱柱的是()2.如图,讲台上放着一本数学书,书上放着一个粉笔盒,若这个组合图形的俯视图如图②,则这个组合图形的左视图正确的是()3.小丽制作了一个如图所示的正方体礼品盒,其对面图案都相同,那么这
I. Careful selection of choices - seeing gold (3 points for each question, for a total of 36 points) 1. The following figure cannot be enclosed in a prism by folding () 2. As shown in the figure, there is a mathematical book on the podium. There is a chalk box placed on the book. If the top view of the combined graphics is shown in Figure 2, the left view of the combined graphics is correct. (3) Xiaoli made a rectangular box like the one shown in the figure. All the same, then this