Perhaps most important, break allows children to design their own games, to test their abilities, to role-play, and to settle their own conflicts--- activities that are key to developing social skills and managing complicated situations. Initial results from an ongoing study in Texas suggest that elementary-school children who are given four 15-munute breaks a day are significantly more sympathetic toward their peer than are kids who don't get break.

1. What causes "the break moms" to start a fight?

　　A. Pupils' lack of outdoor play B. Poor school management

　　C. Absence of education laws D. Inequality among students

2. In one series of experiments, researchers find that _______.

　　A. children behave better when let out earlier

　　B. kids waiting longer are unable to stay focused again

　　C. third-grader have difficulty in focusing on task

　　D. fourth-graders are more concentrated without a break

3. What can we infer if we can ensure children a certain amount of daily break?

　　A. They escape from life conflicts

　　B. They may strengthen dependence

　　C. They are more considerate towards others

　　D. They are eager to manage complicated situations

If you are not reading this on a screen, then you hold in your hands one of humanity's most world-changing inventions. Yet that power has not been matched by fame; paper delights in self-modesty, pointing you to the words on its surface, and so acting only as a stage for ideas and arguments that have changed history.

Without that stage, the written and printed word would have attracted only a small audience. All the alternatives to paper commonly used throughout our pre-digital history have been too rare, too heavy, too expensive or too inconvenient to deliver words to a wide number of people, let alone a mass readership.

Paper has enabled writers to reach unprecedented numbers throughout history. Among them were the Buddhist missionary translators from South and Central Asia