凑成十的伙伴
针鼹梅莉喜欢小小的谜题。她喜欢敲一敲数字,想一会儿,然后等着一个友好的答案。一天早上,她和箱龟塔维、友好的蜘蛛苏拉一起,急急忙忙赶到火车站的站台。 一辆蒸汽火车停在站台旁边。它的铃铛轻轻地“叮”了一声。木桌上放着一块写着九的数字牌,旁边还有一个空位。 “每个数字都找到伙伴,火车才会开走。”苏拉说,“两个伙伴加在一起,必须正好是十。” 梅莉认真地想。塔维用一只脚轻轻敲着桌子。“我们先试试一个小一点的数字吧。”他说。 梅莉拿起写着一的数字牌,把它放在九的旁边。九加一,十! 火车开心地“噗”了一声。梅莉的心也开心地蹦了一下。 “每个数字都能找到伙伴吗?”她问。
“我们可以找找看。”塔维说,“我们可以慢慢数。” 苏拉从桌子上拉出一根银色的丝线,一直牵到花园门口。“跟着我的丝线来!”她喊道,“下一个谜题就在外面等着呢。” 他们穿过车站花园。在一条矮矮的木坡道旁边,一块滑板停在地上。坡道上放着写着八的数字牌,苏拉的蜘蛛网上还有一块写着二的牌子。 “八加二。”梅莉说。她数着自己的爪子。“八,再加两个。十!” 塔维笑了。“一个大数字,可能只需要一个小伙伴。” 接着,滑板沿着坡道轻轻地滑了下来。梅莉把两只爪子放在滑板上。塔维爬到她后面,苏拉拉着一根系在滑板旁边的丝线。嗖!他们滑过花朵,停在火车旁边。 草地上还放着两块数字牌。一块写着七,另一块写着三。
“七加三!”苏拉喊道,“它们也能凑成十!” 火车铃铛响了两声。花园好像也和他们一起哼起了歌。 朋友们爬进了数字车厢。火车开始“咔嚓咔嚓”地开动。车厢里有一块黄铜板,上面有一些放数字伙伴的小格子。梅莉看见一个格子里是六,旁边的格子里是四。 “六加四。”她轻声说,“又是十。” 塔维找到了两块写着五的数字牌。他把它们并排放好。“五加五。”他说,“它们也是伙伴。” 梅莉拍了拍爪子。“这些数字就像野餐时的朋友。他们带来的东西,正好是大家需要的。” 突然,火车慢了下来。黄铜板发出轻轻的一声咔哒。它的一排格子里还少最后一对伙伴。梅莉的肚子摇了摇。难道他们忘记了一个数字? 苏拉看了看长椅下面。塔维看了看黄铜板后面。梅莉把每一块数字牌都看了一遍。这里有从一到九的数字牌,可是它们全都混在了一起。
“让我们想一想。”塔维说,“九需要一。八需要二。七需要三。六需要四。五需要五。” 梅莉把这些伙伴一对一对地排在地板上。她用一只爪子碰了碰每一对。它们排成了整齐的小图案。火车开始发出温暖的金色光芒。 最后,蒸汽火车到达了月光下的山顶车站。星星下面有一条长长的长椅。朋友们把五对伙伴摆在长椅上:九和一,八和二,七和三,六和四,五和五。 苏拉在自己的蜘蛛网上跳起舞来。塔维骄傲地点了点头。梅莉看着整整一排数字。 “一到九的每个数字都有伙伴。”她说,“而且每一对加起来都是十!” 火车发出了它最大的一声“噗”!梅莉、塔维和苏拉笑了起来,笑声在山坡上回荡。 然后,梅莉在长椅上发现了另一个空位。她在那里放了一颗小小的木星星。它不是数字,而是一个提醒:当朋友需要帮助时,就要看看、数一数,找到合适的伙伴。 三个朋友在星星下坐着火车回家,准备迎接下一个谜题。
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