水银和酒精的凝固点不同．如果要测量﹣50℃左右的气温，应使用____温度计．

阅读下面的古诗，完成后面题目。

菊

李商隐

暗暗淡淡紫，融融冶冶黄。

陶令篱边色，罗含宅里香①。

几时禁重露，实是怯残阳。

愿泛金鹦鹉②，升君白玉堂。

【注】①《晋书·罗含传》：“及致仕还家，阶庭忽兰菊从生，以为德行之感焉。”②金鹦鹉：金制的状如鹦鹉螺的酒杯。

$4x=\frac{2}{15}，则x$

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                                                                                             心田上的百合花
        在一个偏僻遥远的山谷里，有一个高达数千尺的断崖。不知道什么时候，断崖边上长出了一株小小的百合。百合刚刚诞生的时候，长得和杂草一模一样。但是，它心里知道自己并不是一株野草。它的内心深处，有一个内在的纯洁的念头：“我是一株百合，不是一株野草。惟一能证明我是百合的方法，就是开出美丽的花朵。”有了这个念头，百合努力地吸收水分和阳光，深深地扎根，直立地挺着胸膛。终于在一个春天的清晨，百合的顶部结出了第一个花苞。
        百合心里很高兴，附近的杂草却很不屑，它们在私底下嘲笑着百合：“这家伙明明是一株草，偏偏说自己是一株花，还真以为自己是一株花，我看它顶上结的不是花苞，而是头脑长瘤了。”公开场合，它们则讥讽百合：“你不要做梦了，即使你真的会开花，在这荒郊野外，你的价值还不是跟我们一样？”　    百合说：“我要开花，是因为我知道自己有美丽的花；我要开花，是为了完成作为一株花的庄严生命；我要开花，是由于自己喜欢以花来证明自己的存在。不管有没有人欣赏，不管你们怎么看我，我都要开花！”
        在野草的鄙夷下，野百合努力地释放内心的能量。有一天，它终于开花了。它那灵性的洁白和秀挺的风姿，成为断崖上最美丽的颜色。这时候，野草再也不敢嘲笑它了。
        百合花一朵一朵地盛开着，花朵上每天都有晶莹的水珠，野草们以为那是昨夜的露水，只有百合自己知道，那是极深沉的欢喜所结的泪滴。年年春天，野百合努力地开花、结籽。它的种子随着风，落在山谷、草原和悬崖边上，到处都开满洁白的野百合。　　
        几十年后，远在百里外的人，从城市，从乡村，千里迢迢赶来欣赏百合开花。许多孩童跪下来，闻嗅百合花的芬芳；许多情侣互相拥抱，许下了“百年好合”的誓言；无数的人看到这从未见过的美，感动得落泪，触动内心那纯净温柔的一角。
        不管别人怎么欣赏，满山的百合花都谨记着第一株百合的教导：“我们要全心全意默默地开花，以花来证明自己的存在。”

    It was a hot day in Bangkok (曼谷). I was walking out of the busy Grand Palace, and some 1Thai teens started asking me questions. Noticing that I was2, they were interested and wanted to know more.

    “Oh, so lonely!” they said to me when they learned I was,indeed,3 solo for the long journey. I smiled and shrugged. They didn't know I've 4 been alone.

    I'm surprised by how much more outgoing I've become. Instead of putting my5down and ignoring the person who may be6me on the sidewalk, now I smile and say hello.

    The only bad thing is the fleeting (短暂的) nature of the relationship one builds on the7. I've felt sad more than a couple of times over parting ways8a fellow traveler. But there are always9friends and possibilities just the next town over.

    Part of the10of taking this trip was the knowledge that I'd be doing this alone. At first, I tried to get friends to11with me for various legs of the journey. I asked close friends, then even not-so-close12, then slowly realized that I might never travel if I13around for a time when a friend of mine would be free to14me.

    If I was really going to do this, it would have to be alone.

    As it turns out, traveling alone is the best15I could have made. You always have to make16considerations for others when you travel with others. Sometimes, you have to do things you don't feel like doing.

    Solo travel is amazing. And really,17I truly want and seek out18, I am never alone. I always have a group. I never feel19. Sometimes, being alone forces you to reach out to people you might not otherwise have ever 20.

    So don't fear traveling alone. It's the best thing there is.