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-Skills that can easily get feedback are suitable for self-study. For example, when programming and debugging run away, you will know what goes wrong. Continue to take English as an example. If you find some words and roots that you are not familiar with, add them to your favorites and repeat them when you are free. If you find that you cannot understand grammatical difficult prepositions, you need to read and learn about them. Feedback is very important, which determines whether learning is mechanical repetition or virtuous circle.Input:周青不解玉帝的意图，不过还是收下张自然，只是在张自然的表舅杨戬寻来后，就把这孩子给了杨戬。亚马逊预定《杰克·莱恩》第三季！该剧由约翰·卡拉辛斯基主演，故事讲述CIA分析专家和侦探杰克·莱恩找到恐怖份子沟通的模式，并引领他进入这场能威胁全球的危险布局之中。温良贤淑的富家小姐楚云鹤，身不由己嫁入深宅大院，操持家业赈济百姓，一度和土匪武装势同水火，却阴差阳错成了土匪首领。爱过她的家院侍卫百子离她而去，加入革命队伍，成长为解放军的侦查排长，领命剿匪。土匪在解放军面前溃不成军，楚云鹤屡屡逃脱之后，终于被百子亲手抓获。她的传奇故事惊动了党中央，毛主席亲自批示枪下留人。为报共产党的不杀之恩，楚云鹤转而配合解放军剿匪，战斗中他们经历了生死考验。For example, int [] sorting has bubbling, selective sorting, merging, heap and other algorithms. Each algorithm is a Strategy, which is encapsulated according to and can be used independently.