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                                                                                                         动物的弄虚作假
        ①自然界一些动物为了生存竞争、繁衍子孙，常会弄虚作假，玩弄骗术。其技巧之高超，简直令人难以想像。
        ②椿象、金龟子只要稍动它一下，立刻会装死从农作物上掉落地面，过会儿又活动开来。鸭子似乎是傻乎乎的，但当其被红狐追捕时，会翻着白眼装死。有人曾做试验，用红狐追捕养鸭场的50只鸭子，竟有29只在狐爪下逃生。深信装死的狐狸，其本身装死的技艺更高。一次，一只狐狸被猎人击中，它 迅即原地躺倒，全身瘫软，一动不动，猎人以为狐狸已死，就暂放原处，转到他处行猎。待到归来收拾猎物时，狐狸早已溜之大吉，猎人上了狐狸的当。
        ③人们有时会发现有些蟹或虾的螯足一大一小，有的蛇或壁虎的尾巴粗细与身子相差悬殊，这决不是先天的畸形，也不是什么稀有品种，而是当它们遇到了强敌，使出了断足截尾的绝招，来一个“舍车保帅”，新的足还未长成原来大小的缘故。
        ④栖息在北极圈内的白狐、北欧山区的雪兔、日本北部的高山兔和我国新疆阿尔泰山区的雷鸟，能随着季节变化而改变颜色。如雷鸟到白雪皑皑的时候，便银装素裹；当春暖花开时，又着上淡黄色的“春装”；盛夏酷暑，浑身又换成栗褐之色；当秋风萧瑟的时节来到，又穿上与环境协调一致的暗棕色羽裳。
        ⑤见过竹节蝗、木叶蝶的人，无不为它们的形态与所附着的茎叶是那么相似而叫绝，这是一种生就的拟态。生活在澳州的叶海马，其体态能模拟周围物体，全身生出许多叶形突出物和丝状物，好似马尾藻一样，在海水中缓缓飘荡，使对手极难辨别。
        ⑥有的动物甚至会“行诈术”。一位学者曾发现一只苍鹭为觅食一条小鱼，颇费了一番脑筋：它嘴叼一根小羽毛，在小溪岸边踱着方步，两眼扫视着浅浅的溪水。随即突然止步，有意让羽毛掉进水里面；小鱼误以为是饵料，游近羽毛，苍鹭便以闪电般的动作扑向水面，吞食美味。
        ⑦动物在面临它的对手或要达到某一目的时，决不是简单地屈从或毫不掩饰其真面目。人们在认识和利用动物时，务必要注意到这点。
                                                                                                                                                                                               （本文选自《阅读与欣赏》，有删改）

某商场促销一天卖出衣服279元，裤子138元和鞋子201元，加起来一共卖了608元。

     We humans live in different parts of the world, but we have the same “mother”. She gives us everything we need in our daily life. She is our Mother Earth.
    April 22 is Earth Day. The theme of this year is “Green Cities”.
    A green city is a healthy and pleasant place for people to live, according to the United Nations.
     A green city can get its energy from renewable (可再生的) sources like solar (太阳能的) and wind power. Also, it is connected by clean public transportation. Moreover, a green city is made up of facilities (设施) that can save energy and reduce waste.
Around the world, many cities and countries have done well to build themselves in a green way.
     Chicago is well known for its green roof (屋顶) program. These roofs are covered with plants. The plants get a great amount of rainwater. Later, the water evaporates (蒸发) to help make the air cool and clean. So far, there are about 360 green roofs in Chicago, according to the US Environmental Protection Agency.
      Curitiba, Brazil, has great transportation. It opened the world's first bus rapid transit (BRT) system in 1974. BRT runs on special lanes. This makes sure that buses are on time even in traffic jams. With the help of BRT, the city has the lowest level of air pollution in Brazil. Today, many other countries have copied BRT, including China and Mexico.
      Singapore is home to the first zero-energy building in Southeast Asia. Zero energy means a building is able to create more energy than it uses. Zero-energy buildings work with solar panels (板) mainly on roofs. These panels can make electricity which powers the buildings. By 2030, Singapore plans to build 80 percent of its buildings like this.