根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。
【小题1】 When a person does a certain thing over and over again, he is impelled by some unseen force to do the same thing repeatedly; thus a habit is formed. Once a habit is formed, it is difficult, and sometimes impossible, to get rid of. 【小题2】
Children often form bad habits, some of which remain with them as long as they live. Older persons also form bad habits as long as they live, and sometimes bee ruined by them.
【小题3】 Many successful men say that much of their success has something to do with certain habits formed in early life, such as early rising, honesty and thoroughness.
The habits which children should not form are laziness, lying, stealing and so on. 【小题4】 Unfortunately older persons often form habits which ought to have been avoided.
We ought to keep from all these bad habits. 【小题5】A．These are all easily-formed habits.B．Habits, whether good or bad, are gradually formed.C．Whether habits are good or bad, they are easy to get rid of.D．It is very important for us to know why we should form good habits.E. There are other habits which, when formed in early life, are of great help.
F. Meanwhile, try to form habits that are good for yourselves and others.
G. Therefore, it’s very important for us to pay attention to the formation of habits.B
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(答案→)B
解析：
【小题1】根据When a person does a certain thing over and over again, he is impelled by some unseen force to do the same thing repeatedly; thus a habit is formed. 可知这里想说习惯，不管是好还是坏，是逐渐形成的， 故选B。
【小题2】根据Once a habit is formed, it is difficult, and sometimes impossible, to get rid of.可知这里想说因此，对于我们来说，注意习惯的养成是非常重要的，故选G。
【小题3】根据Many successful men say that much of their success has something to do with certain habits formed in early life, such as early rising, honesty and thoroughness. 可知这里想说有其它的一些习惯，形成于早期，非常的有帮助，故选E。
【小题4】根据The habits which children should not form are laziness, lying, stealing and so on.可知这里想说这些都是很容易形成的习惯，故选A。
【小题5】根据We ought to keep from all these bad habits.可知这里想说同时，努力形成对自己或是对他人有好处的习惯，故选F。