1920年5月的一个早晨，一位叫麦隆内夫人的美国记者，几经周折终于在巴黎实验室里见到了镭的发现者。端庄典雅的居里夫人与异常简陋的实验室，给这位美国记者留下了深刻印象。此时，镭问世已经18年了，它当初的身价曾高达75万法郎。美国记者由此推断，仅凭专利技术，应该早已使眼前这位夫人富甲一方了。

    但事实上，居里夫人也正是在18年前就放弃了他们的权利，并毫无保留地公布了镭的提纯方法。居里夫人的解释异常平淡：“没有人应该因镭致富，它是属于全人类的。”

    麦隆内夫人困惑不解地问：“难道这个世界上就没有你最想要的东西吗？”

    “有，一克镭，以便我的研究。可18年后的今天我买不起，它的价格太贵了。”

    这出乎意料的回答，使麦隆内夫人既感惊讶又非常不平静。镭的提纯技术已使世界各地的商人腰缠万贯，而镭的发现者却因困顿至此！她立即飞回美国，打听出一克镭在美国当时的市价是10万美元，便先找了10个女百万富翁，以为同是女人又有钱，她们肯定会解囊相助，万万没想到却碰了壁。这使麦隆内夫人意识到，这不仅仅是一次金钱的需求，更是一场呼唤公众理解科学、弘扬科学家品格的社会教育，于是，她在全美妇女中奔走宣传，最终获得成功。1921年5月20日，美国总统将公众捐献的一克镭赠予居里夫人。

    数年之后，当居里夫人想在自己的祖国波兰华沙创设一个镭研究院，治疗癌病的时候，美国公众再次为她捐赠了第二克镭。

    一些人认为，居里夫人在对待镭的问题上固执得让人难以理解，在专利书上签个字，所有的困难不是可以解决了吗？居里夫人在后来的自传中回答了这个问题：“他们所说的并非没有道理，但我仍相信我们夫妇是对的。人类需要善于实践的人，他们能从工作中取得极大的收获，既不忘记大众的福利，又能保障自己的利益。但人类也需要梦想者，需要醉心于事业的大公无私。”

    居里夫人一生拥有过三克镭，她把研究出的第一克镭给了科学，公众则把第二克镭和第三克镭回赠了她。这三克镭展示了一个科学家伟大的人格，和由此唤起的公众对科学的理解。

    A group of frogs were traveling through the woods, and two of them fell into a pit（深坑）.When the other frogs saw how 1 the pit was, they told the two frogs that they2as well wait to die. The two frogs ignored the comments and tried to jump3 the pit with all their4 The other frogs kept telling them to5,and that they were as good as dead. Finally, one of the two frogs listened to what the other frogs said and6.He fell down and died.

    The other frog continued to jump 7 and try his best. Once again, the crowd of frogs shouted at him to stop the8and just die. He jumped even harder and finally9 it. When he got out, the other frog said," Didn't you 10us?" The frog explained to them that he was a little 11.He thought they were 12 him the entire time rather than advising him to stop the pain of struggle.

    This story teaches us two13: First, there is the power of life and14 in words. An encouraging word to someone who is15 can lift him up and help him make it through. Second, a(n) 16 word to someone who is down can be what it takes to kill him.

Be careful of 17 you say. Speak positively to those who cross your path.The power of words is so great; it is18 hard to understand that an encouraging word can go such a(n) 19 way. Anyone can speak words that tend to rob（掠夺）another of the20 to continue in difficult times.The individual who will take the time to encourage another is special.

—________.