题目内容：
46. (阅读理解题)To learn with success is not a very difficult task if some fundamental principles are laid __(1)__ to be the bases. In discussing this subject, four indispensable principles should __(2)__ , that is, diligence, devotion, constancy and punctuality. All things can be conquered by diligence. It __(3)__ the foolish wise, the poor rich, and the humble noble. It produces a wonderful effect. In learning, the work of a diligent fool doubles that of a lazy wit. Devotion means to set our heart __(4)__ one thing at a time and give up all other thoughts. Never think of learning __(5)__ subject while studying one thing. Those who often change their studies will never succeed __(6)__ the long run. Therefore, in order to be successful we need devotion. Constancy makes success a certainty, while inconstancy often __(7)__ in failure. __(8)__ we study day after day, there is nothing that can not be achieved. We should remember the proverb, “Constant dripping of water wears away a stone.” __(9)__ these, there is another rule helpful to one’s accomplishments, that is, punctuality. The habit of keeping a regular time is __(10)__ extreme importance to successful learning. “Work while working; play while playing.” Every man will certainly become wise and successful if he does so.
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