As a child grows out of being an infant and begins to notice and react to the world around him, you

16. C    17. G    18. B    19. D    20. F
【解析】
这是一篇说明文。文章介绍了如何让孩子尊重别人。
【16题详解】
根据后面一句话"A child who learns to respect all he meets not only receives respect from others in kind，but learns to respect himself as well．"可知，学会尊重的孩子不仅可以获得别人的尊重而且也会尊重自己，即尊重对以后的生活是非常重要的，由此可知，空处谈论的是尊重的重要性；结合选项可知，选项C. Respect is necessary for a meaningful and successful life. 尊重是有意义和成功生活的必要条件，符合题意。故选C。
【17题详解】
根据空后"The more you say “please” and “thank you” to your child, the more likely he will learn to use them with you and others."可知，你对你的孩子说“请”和“谢谢”越多，他就越有可能学会在你和别人面前使用它们。由此可知，给孩子树立榜样很重要；结合选项可知，选项G. Setting a good example is the best way to start a child on the path to respect树立一个好榜样是让孩子走上尊重之路的最好方法，与后文描述内容一致。故选G。
【18题详解】
根据空前"Agree to disagree."和空后"Disagreeing with you doesn't equate (等于)to disobedience."可知，不同意你的意见并不等于不服从。由此可知，空处表示孩子并不总是同意你；结合选项可知，选项B. Try to remember that a child won't always agree with you. 试着记住孩子不会总是同意你的意见，承上启下，符合题意。故选B。
【19题详解】
由本段主题句"Control your impulse to overact."（控制你过度的冲动。）和"When a situation arises between you and your child that requires calmness, keep in mind that you are supposed to be modeling correct behavior."可知，当你和你的孩子之间出现状况，需要冷静,记住,你应该是正确行为的建模。由此可知，空处建议我们要控制自己的脾气，因为小孩子会跟我们学；结合选项可知，选项D. If he sees you lose temper, he is more likely to respond that way in future. 如果他看到你在发脾气，他以后更有可能做出这样的反应，呼应前文，符合题意。故选D。
【20题详解】
根据前文“Praise, praise, praise! So much is focused on what a child does wrong and how to correct it that the accomplishments are not celebrated enough.”可知，赞美，赞美，赞美！太多的注意力都集中在孩子做错了什么以及如何改正，以至于他们的成就没有得到足够的赞美；由此可知，空处建议我们要给孩子多点赞扬；结合选项可知，选项F. When you see your child exhibit respectful behavior, make sure he knows just how proud you are of him. 当你看到你的孩子表现出尊重他人的行为时，一定要让他知道你对他有多自豪，与前文描述内容一致。故选F。