“观万国之势，能变则全，不变则亡，全变则强，小变仍亡。”这是哪个派别的观点（　　）

七个圆内填入七个连续自然数，使每两个相邻圆内的数之和等于连线上的已知数，b为一位数，那么写A的圆内应填入____ ．

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

    Since the one-baby policy ____ (carry) out in China, Chinese families have been shrinking from one with over 10 members to the other with only three including parents and one baby. Things are usually out of our expectation. Apart from the benefits ____ have been mentioned enough, small families are now beginning to have ____ own problems. Because parents are having fewer children, they increasingly feel the need ____ (control) the lives of those children. As a result, many children are becoming less ____ (depend), determined and ambitious than in the past.   

    Parents today discourage their children from doing housework, extracurricular activities and socializing ____ they fear it will interrupt their education. For example, when I was younger I wanted to learn the guitar ____ my parents wouldn’t allow me because they believed it would distract me from my studies. They are happy as long as I perform ____ (wonder) in my exams but don’t seem concerned about how I develop ____ a person.

    To some extent, I understand parents’ concerns, but I think they should love their children for ____ they are, not what they want them to be. We deserve the chance to chase our own dreams and learn on our own. Even if we fail, we can learn from those failures.

陆地面积占地球表面的比例为____。