为解决老百姓看病贵的问题，对某种原价为400元的药品进行连续两次降价，降价后的价格为256元，设每次降价的百分率为x，则依题意列方程为：{#blank#}1{#/blank#}．

“1849年（英国）国会废除了臭名昭著的航海条例，这一决议从1850年开始生效……1840～1860年间，英国继续削减关税，许多商品的关税甚至被取消。……1863～1866年间，通过与法国签订条约，大多数欧洲国家加入了自由贸易网络，即所谓的‘科布登——谢瓦利埃条约’网络。”材料反映了（   ）

“1849年（英国）国会废除了臭名昭著的航海条例，这一决议从1850年开始生效……1840～1860年间，英国继续削减关税，许多商品的关税甚至被取消。……1863～1866年间，通过与法国签订条约，大多数欧洲国家加入了自由贸易网络，即所谓的‘科布登——谢瓦利埃条约’网络。”材料反映了（   ）

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    A popular saying goes, “Sticks and stones may break my bones, but words will never hurt me.” However, that's not really true. Words have the power to build us up or tear us down. It doesn't matter if the words come from someone else or ourselves — the positive and negative effects are just as lasting.

    We all talk to ourselves sometimes. We're usually too embarrassed to admit it, though. In fact, we really shouldn't be because more and more experts believe talking to ourselves out loud is a healthy habit.

    This “self-talk” helps us motivate ourselves, remember things, solve problems, and calm ourselves down. Be aware, though, that as much as 77% of self-talk tends to be negative. So in order to stay positive, we should only speak words of encouragement to ourselves. We should also be quick to give ourselves a pat on the back. The next time you finish a project, do well in a test, or finally clean your room, join me in saying “Good job!”

    Often, words come out of our mouths without us thinking about the effect they will have. But we should be aware that our words cause certain responses in others. For example, when returning an item to a store, we might use warm, friendly language during the exchange. And the clerk will probably respond in a similar manner. Or harsh (刻薄的) and critical language will most likely cause the clerk to be defensive.

    Words possess power because of their lasting effects. Many of us regret something we once said. And we remember unkind words said to us! Before speaking, we should always ask ourselves: Is it true? Is it loving? Is it needed? If what we want to say doesn't pass this test, then it's better left unsaid.

    Words possess power: both positive and negative. Those around us receive encouragement when we speak positively. We can offer hope, build self-esteem (自尊) and motivate others to do their best. Negative words destroy all those things. Will we use our words to hurt or to heal? The choice is ours.