阅读如图所示的程序框图，运行相应的程序．若输入某个正整数n后，输出的S∈(31，72)，则n的值为(    )

发生在肺部的呼吸与____  和____ 收缩舒张有关；组织里的气体交换是血液和细胞之间进行____ 和____ 的交换，这个过程是通过____ 实现的．

阅读下列材料,结合所学知识回答问题。

材料一　2012年12月,******在广东考察经济工作时强调,我们既要充分肯定今年我国经济社会发展取得的成绩,看到我国经济社会发展基本面长期趋好的态势,也要看到国际国内各种不利因素的长期性、复杂性、曲折性。不回避矛盾,不掩盖问题。希望广东要重点推进经济结构战略性调整,掌控制高点和主动权,使广东成为发展中国特色社会主义的排头兵、深化改革开放的先行地、探索科学发展的实验区。

材料二　中国梦,就是中华民族的复兴。民族复兴,关键在于文化复兴。文化复兴,最重要的是要有文化自觉与文化自信。文化自信,来自于对自身文化价值的充分肯定、对自身文化生命力的坚定信念。增强文化自信,需要我们正确看待过去的文化和现在的文化,正确看待自己的文化和别人的文化。

增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。

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。

3). 不按要求格式改错不得分。

例如:

    It was very nice to get your invitation to spend ∧ weekend with you. Luckily I was completely free then, so I'll the am to say “yes”. I'll arrive in Bristol at around 8:00 p.m. in Friday evening.On this morning I got up early and went to school as usually, only to find there were nobody in the classroom because it is Sunday. “How a bad memory I have!” I couldn't help laughing. Stand in front of the school gate, I began to wonder what to do next. Suddenly a good idea occurs to me. “Why not get together with some good friends for a picnic in such a fine weather?” I immediately telephoned some of my best friends, but they all agreed to join me. About two hours late, we finally arrived a pleasant park with trees and flowers here and there. We really enjoyed us greatly.