I volunteered to work at my local Oxfam shop in North London in 2010 for nearly four months. It was a typical charity shop. I would go in a few times a week to work for a/an 1 of hours.

    My responsibility as a volunteer for Green Initiatives in Shanghai has been very different. I 2 to China in September 2014 to work as a teacher in Kunshan, Jiangsu Province, a neighboring city of Shanghai. I also wanted to 3 my interest in the environmental sector.

    In early September, I met Nick and Nitin, founders of Green Initiatives, at one of their events and, in 4 of my teaching background, they decided that I would be a good fit for their student outreach program, an environmental education-training program for high school students in Shanghai.

    I was given the 5 of creating their student modules and since then I have put together four higher-level student modules, which introduce key environmental issues such as food waste, recycling and sustainable consumption. I am also currently working 6 another two modules focused on energy conservation.

    It involves a lot of research, and I usually end up 7 around 10 to 15 hours a week searching through science textbooks, online articles and government websites to find relevant and accurate 8.

    I find the research 9 because I get to find out about what new 10 and technologies are being developed to deal with environmental problems. 11 to working in a shop, I find this job is quite rewarding, since I am 12 something that can not be obtained from books.

    I also 13 many of the Green Initiatives events. These events are one of the best things about volunteering because I get the 14 to network and meet 15 people who have ideas about 16 to make Shanghai ‘greener.'

    When I am at the events, we often have Chinese speakers, and so the events have also been an interesting 17 experience for me.

    One of the biggest differences between my experience 18 at Oxfam and Green Initiatives is the motivations of the people you meet and work with. At Oxfam, the motivations were varied. People were there to ‘do their bit for charity,' to earn a living, or 19 because they could only afford the things we sold.

    Speaking to people in China, motivations are also varied but the main driver is the environmental degradation, such as air pollution, which affects, or at least concerns, many of these people in their everyday lives.

    As the student modules are coming to an end, I am looking forward to being involved in the upcoming projects in Shanghai, especially when the sun comes out and we can 20 more outdoor events.

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                                                                                 匠人与大师（梁 衡） 
      ①在社会上常听到叫某人为“大师”，有时是尊敬，有时是吹捧。又常不满于某件作品，说有“匠气”。匠人与大师到底有何区别？
      ②匠人在重复，大师在创造。一个匠人，比如木匠，他总在重复做着一种式样的家具，高下之分只在他的熟练程度和技术精度。比如一般木匠每天做一把椅子，好木匠一天做三把、五把，再加上刨面更光，合缝更严等等。但就算一天做到100把也还是一个木匠。大师则绝不重复，他设计了一种家具，下一个肯定又是一个新样子。判断他的高下是有没有突破和创新。匠人总在想怎么把手里的玩艺儿做得更多、更快、更绝；大师则早就不稀罕这玩意，而在不断构思新东西。
      ③匠人在实践层面，大师在理论层面。匠人从事具体操作水平的上限是经验丰富，但还没从经验上升到理论。虽然这些经验体现和验证了规律，但还不是规律本身。大师则站在理论的层面上，靠规律运作。面对一片瓜地，匠人忙着一个一个去摘瓜，大师只提起一根瓜藤；面对一大堆数字，匠人满头大汗，一道接一道地去算，大师只需轻轻给出一个公式。匠人常自持一技，自炫于一艺，偶有一得，守之为本；大师视鲜花掌声为过眼烟云，进取不竭，心犹难宁。
      ④匠人较单一，大师善综合。我们常说一技之长，一招鲜，吃遍天，这是指匠人，大师则不靠这，他纵横捭阖，运筹帷幄，触类旁通，举一反三。因为凡创新、创造，都是在引进、吸收、对比、杂交、重构等大综合之后才出现的。当匠人靠一技之长，享一得之利，拿人一把，压人一筹时，大师则把这一技收来只作恒河一沙，再佐以砖、瓦、土、石、泥，起一座高楼。牛顿、爱因斯坦成为物理大师并不只因物理，还有更重要的数学、哲学等。而成为一个社会科学方面的大师要求就更高，马克思、恩格斯是一部他们那个时代的百科全书，***则是当时中国政治、军事、文学的宝典。
      ⑤这就是大师与匠人的区别。研究这个区别毫无贬损匠人之意，大师是辉煌的里程碑，匠人是可贵的铺路石。世界是五光十色的，需要大师也需要匠人，正如需要将军也需要士兵。但是我们必须承认这个世界需要人们有一个较高的追求目标。拿破仑说不想当将军的士兵不是好士兵。将军总是在优秀的士兵中成长起来的。当他不满足于打枪、投弹的重复而由单一到综合，由经验到理性，有了战役、战略的水平时他就成了将军。鲁班最初是一名普通木匠，当他在技术层面已经纯熟，不满足于斧锯的重复，而进军建筑设计、构造原理时，就成了建筑大师。虽然从匠人而成为大师的总是少数，但这种进取精神是人类进步、社会发展的动力。古语说，法乎其上，得乎其中；法乎其中，得乎其下。要是人人都法乎其下呢？这个社会就不堪设想。
      ⑥我们可能在实际业绩上达不到大师水平，但至少在思想方法上要循大师的思路，比如力求创新，不要重复，不要窃喜于小巧小技，沾沾自喜。对事物要有识别、有目标、有追求。力虽不逮，心向往之。在个人有了这样一种心理，就会有所上进；在民族有了这样一个素质，就会生机勃勃；在社会有了这样一个氛围，就是一个创新的社会。

判断对错.

一瓶饮料重 $\frac{7}{10}$ 千克，可以写成70％千克．

已知实数 $a,b,c$ 满足 $a>0,b>0,c>0$ ，且 $abc=1$ .