Patricia is a pianist and music teacher in California.She wanted to1money for music scholarships at her local community college.One day she had an idea.She thought，"I'm going to ride my2across the United State this summer.I'm going to ask people to give money3 every mile I ride."She talked to the people in the community about4idea. They all liked the idea and strongly supported her.So she felt very5for it.

    Patricia joined about forty other6who were all from California.They began the long 7 across the US in Astoria，Oregon.Patricia went up and down huge hills.She saw beautiful countryside and8friendly people.9there were problems，too.The 10was sometimes very hot，windy or cold.Patricia was tired and sore every night.

    One day she11an accident.She12her bike and her toes were badly hurt.But she continued to ride.She overcame many difficulties and spent two13on the whole ride.She raised more than $10，000 for music scholarship.Patricia was happy and14of it. She did it!

    People don't 15her when she tells them her age.Patricia looks very young and  acts very young.Can you imagine that she is 67 years old? The 67-year-old woman rode across the US in sixty days !

1. 小明按电路图将实物连接起来，闭合开关前滑动变阻器的滑片应放在最____ (填“左”或“右”)端。闭合开关，发现电流表A与电压表V₁的示数为零，电压表V₂的示数不为零，若故障是电路中的电阻R1或滑动变阻器R₂,则你认为故障可能是____ 。
   

弘扬和践行社会主义核心价值观必须利于中华优秀文化，传承中华传统美德。

中华民族是一个热爱仁爱、乐善好施的民族，在中国的传统思想中“善”是和善、亲善、友善、行善的意思。在“行善积德”意义上的敬老爱幼、扶贫帮困已成为中国人民约定俗成的一种道德规范。今天，“友善”成为了社会主义核心价值观的基本内容和公民行为规范的价值准则。

结合材料，运用文化生活知识说明，践行和培育社会主义核心价值观需要立足中华传统文化，弘扬友善精神。