见解析
【小题1】B
【小题2】G
【小题3】E
【小题4】A
【小题5】F
试题分析：
【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。
考点：考查日常生活类阅读
