题干

下列物品中,根据物质热胀冷缩原理设计的是(    )。

A:保温杯

B:风向仪

C:水银温度计

上一题 下一题 0.0难度 选择题 更新时间:2012-04-10 07:37:49

答案(点此获取答案解析)

C

同类题2

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    Differences are important and they should be respected. For example, many important people throughout history were considered different, such as Thomas Edison, Albert Einstein and Abraham Lincoln. They did great things, but some people thought they were strange because they had strong feelings about something. I can understand these people because I've been in that situation before many times.

    It all started in elementary school when I realized that I wasn't like everyone else. My mom says that I have a tendency to be obsessed(着迷)with certain subjects. Unfortunately, these subjects don't interest other kids of my age and they really don't interest my teachers. In fact, my kindergarten teacher said she would scream if I mentioned snakes or lizards one more time while she was teaching the days of the week. I would get into trouble for not paying attention and the teasing began.

    In the third grade, my teacher informed me that I have Asperger's Syndrome(症状). I said, “So what? Do you know that Godzilla's suit weighs 188 pounds?”

    Later, I asked my mom, “What's Asperger's Syndrome? Am I gonna die?” She said that it's like having blinders on, and that I can only see one thing at a time, and that it's hard to focus on other things.

    People also make fun of me for knowing facts about volcanoes, whales, tornadoes and many other scientific things. My mom says that she has been able to answer many questions on Jeopardy! just by listening to what I have to say, but I've even been laughed at for being smart.

    Maybe someday I'll become a gene engineer and create the real Godzilla. I can dream, Can't I?

同类题3

阅读下文,回答下列各题

窑变

余显斌

       ①鲁山花瓷是瓷中名品,百闻难得一见,因此,市场上算稀罕物。可是,他的店里,有时也做着鲁山花瓷的生意。

       ②他开一爿(pán)店,在一弯水边,上写铺名:名瓷之家。各种瓷器,琳琅满目。客人来寻,踏过石桥,转过一道竹林,沿一道逼仄的门进去,眼前﹣亮,面前柜上摆着罐、杯、壶、瓠等,有的天青色,有的白如银子。还有一种瓷,胎质厚实朴重,黑色质地上流淌着白斑蓝彩,泛着幽幽蓝光,让人眩晕。

       ③这,就是闻名的鲁山花瓷。

       ④买家只许看,不许摸。选准了,他才拿出瓷器让对方细看。在他这儿买瓷的,尤其鲁山花瓷的,一般都信任他。因为,他是鲁山花瓷的权威。一尊鲁山花瓷拿来,不用放大镜,他用手一摸,鼻子一嗅,嗯,宋代的,绝对宋代的,瞧这质地,这手感。一查,果然是宋代的。也因此,他的那家店,人来人往,生意很好。

       ⑤当然,有时,买主一个电话,他也会乐呵呵地送货上门,仅限于本市。以他的说法,不为挣钱,纯为交友,志同道合嘛。

       ⑥有人出三万元钱,想买他这个罐。那天,是个细雨天,天青色的烟雨无边无沿地下着。他用纸盒随手装了个小小的鲁山花瓷罐,提着,走了出去。

       ⑦由于路近,他没打车,走过小巷,出了竹林。这时,一轮三轮车冲来,他躲闪不及,手一松,纸盒落地,“哐”的一声全碎了。

       ⑧三轮车司机傻了眼,跳下来道:“没事吧,大哥?”他火了:“没事?瞧我这罐。”三轮车司机说:“不就一个罐吗?多钱!”

       ⑨就在这时,买主打来电话,说三万元已备好,罐怎么还不送来?他将电话让司机听了。三轮司机顿时结结巴巴道:“三──三万元啊?”他眼一翻:“现在知道不是你家腌菜罐子了吧?”三轮司机呆了一会儿,一咬牙:“我赔!”他哼一声:“民工吧,你有钱吗?算了算了,就当我募捐了,做了善事。”说着,他不想再纠缠下去,转身就走。

       ⑩回到家,他拿了另一件鲁山花瓷罐,四耳的,黑底白釉,装入纸箱,去了买主那儿。三万元钱也就到了手里。

       ⑪这样的生意,他一天会做几起。所以,撞碎那件鲁山花瓷的事,他也就慢慢忘了。

       ⑫一个冬日的早晨,他刚开门,一个人影戳在眼前。抬眼一望,不是别人,正是那个民工司机。司机吸溜着鼻子,显然站了一会儿了。看见开门,司机连忙把手上紧紧握着的蛇皮袋层层打开,抖抖缩缩捏出几卷钱,一张张地数,整整三万,放在他手中。

       ⑬司机交了钱,嘘了口气,好像多大一个心事了了。他张张嘴,想说什么,可又没说出来。直看着那民工骑上三轮车,嘟嘟嘟地走了,一直消失在晨雾中,消失在他视线的尽头。

       ⑭他拿着钱仍呆呆地站在那儿,心中有股烈焰在燃烧,在蒸腾,在激流澎湃,以至于他虚汗淋漓。因为,只有他知道,自己卖出去的鲁山花瓷里,有个别是赝品,是自己手制的。

       ⑮那天,民工撞碎的就是一尊赝品。他当时之所以没让赔,一则赝品不值钱。再则怕闹开了,被行家发现,看出其中的猫腻。

       ⑯鲁山花瓷,是高温下的一种美丽的窑变。

       ⑰他没想到,一个民工司机,竟让自己心中发生了剧烈的窑变,也如鲁山花瓷一样,放射着一片洁净的蓝色。当天,他找到民工退还了钱。以后,他的“名瓷之家”中,再也没有赝品了。