第一部分 阅读理解（共两节，满分40分）
第一节（共15小题：每小题2分，满分30分）
A
Habits, whether good or bad, are gradually formed. When a perso n does a certain thing again, he is driven by some unseen fo rce to do the same thing repeatedly, then a habit is formed. Once a habit is formed, it is difficult, and sometimes impossible, to get rid of. It is therefore very important that we should pay great attention to the formation of habits. Children often form bad habits, some of which remain with them as long as they live. Older persons also form bad habits lasting as long as they live, and sometimes become ruined by them.
