如图所示的是由一些相同的小正方体组成的简单几何体的主视图和俯视图，设组成这个几何体的小正方体的个数为n，则n的最大值为（　　）

中国资本主义萌芽发展十分缓慢，历经几百年不能取得突破性的进展，主要是由于

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1）每处错误及其修改均仅限一词；

2）只允许修改10处，多者（从第11处起）不计分。

Ladies and Gentlemen,

    We are so happily that you have taken your time off to be with us today. As you know it, our school had a long history of more than 100 years. With great pleasure we have prepared several event that we hope will please you. On 10: 00 am, our headmaster will give welcome speech in the school hall. Followed the speech is a tour of our school history exhibition at 10:30. The exhibition was laid out in the classrooms on the second floor. But then we will show you around our science, labs which you can see some new advanced equipment. Have fun!