阅读理解

C

    In the United States, headmasters and teachers discipline (惩罚) students in several ways. The teacher often writes to or calls the students' parents. Sometimes students have to stay at school for one hour. If a student behaves very badly, the headmaster can stop the student having classes. The student can't come to school for one, two or three days. Mr. Lazarus, the headmaster of a middle school in Ohio, did not like to do so. When he didn't let the students come to school, they were happy. “A three-day holiday!” they thought.

    One day, a boy was in Mr. Lazarus' office. The boy was not behaving well in class. Mr. Lazarus telephoned the boy's parents. “If you come to school with your son, I won't stop him having classes,＂he said. The boy's father came to school and went with his son to every class. Other students looked at the boy and his father. The boy was embarrassed. After that he behaved better. And, of course, other students behaved better, too.

    Now headmasters all over the USA are trying Mr. Lazarus's idea. They too, think that students behave better when parents come to school.

2015年，“狗带”、“颜值”、“吓死宝宝了”、“城会玩”等新词、热词层出不穷，这些凝炼个性的词语，是现实生活的一面镜子。这表明（  ）

外无期功强近之亲，____。（李密《陈情表》）

下列表述正确的是(    )

国家统计局山东调查总队公布，2015年6月山东省居民消费价格指数同比上涨0.9%，猪肉价格成为推动CPI上涨的主要因素。相关人士分析，2015年以来，猪肉价格持续上扬，特别是进入6月份以后，出现大幅上涨。究其原因，主要是前年下半年、去年猪肉价格持续偏低，许多养殖户均处于亏本及保本的经营状态，他们纷纷缩小养殖规模，致使供应量大幅减少；同时2015年以来，饲料价格上涨，养殖户也普遍存在惜售心理，预计下半年猪肉价格仍会持续高位运行。

结合材料，说明猪肉价格持续上扬原因的分析体现的经济生活道理。