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 again, he is impelled(迫使) 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. Older persons also form bad habits, 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 in early life, such as early rising, honesty and thoroughness. Among 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. 【小题5】 .A．There are other habits which, when formed in early life, are of great help.B．Whether good or not habit are, they are easy to get rid of.C．We ought to keep from all these bad habits, and try to form such habits as will prove good for ourselves and others.D．These are all easily formed habitsE. It is therefore very important that we should pay great attention to the formation of habits.
F. Habits, whether good or bad, are gradually formed(形成)
G. It is very important for us to know why we should get used to good habits.F
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(答案→)F
解析：习惯是由于长期反复做某一件事而形成的，所以无论是好还是坏，都会伴随我们一生。好习惯能助人成功。坏习惯于人于己都有害。所以孩子的习惯培养很重要。
【小题1】考查上下文的语境理解能力。根据后面提到的当他被一种无形的力量驱使着反复做同一件事情的时候习惯就形成了。可知选F（无论习惯好与坏都是逐渐形成的。）。
【小题2】考查上下文的语境理解能力。根据空前的解释说，习惯一旦形成就很难改掉。空后提到孩子形成的习惯伴随一生。所以选E（特别关注习惯的形成这很重要。）。
【小题3】考查上下文的语境理解能力。空后说许多成功人士都提到成功与他们小时候的一些习惯有关，与A所表达的意思（早期形成的习惯对以后很有帮助）一致。
【小题4】考查上下文的语境理解能力。空前说孩子不应该形成懒惰、撒谎、偷盗等等不良习惯。所以选D（这些都是很容易形成的习惯）。
【小题5】考查上下文的语境理解能力。空前一句说：不幸的是，很多年龄大一些的人经常形成应该可以避免的坏习惯。与C中的（应该去除坏习惯，形成对自己对他人有益的习惯）意思一致。