生活不能缺少什么作文500字【一】
冰淇淋是生活中不可缺少的一道美食。夏天没胃口时，尝些冰淇淋，是一个迅速补充体力降低体温的好方法。尤其对小朋友来说更是挡不住的诱惑，聪明的妈妈能在小朋友不愿吃饭时，偶尔改变方式以冰淇淋取代主食，同样能摄取营养和热量，漂亮的颜色又让人产生食欲。
你知道吗？美国每年能销售10亿加仑的冰淇淋，8%的牛奶最终变成冷冻食品。如今，各种各样的冰淇淋店更是遍布世界。现在就让我们一起看看冰淇淋的历史吧。
The earliest reports of people enjoying flavored ice desserts come from the Romans and the Chinese. Marco Polo returned from his famous expedition with fruit-flavored ices, reporting that Asians had been making them for thousands of years. These delicacies became popular in France in the 1500s, but only among royalty. Over the next few centuries, the process of making them evolved from hauling mountain ice to salt/ice freezing methods. Cream was introduced as an ingredient, and by the 1700s, people were enjoying a dessert that was very similar to today's ice cream.
The hand-cranked ice cream freezer was first developed by Nancy Johnson in 1846. Ice was readily available from large warehouses in that era, so ice cream became a treat that could be enjoyed by almost anyone, not just the rich. Ice cream making was revolutionized again in 1851, when Jacob Fussel started the first wholesale ice cream manufacturing operation in Baltimore, Maryland. Fussel's dairy business had excess cream and he couldn't figure out what to do with it. He tried using it to make ice cream, and before long his ice cream business outsold the rest of the dairy.
The business slowly evolved for the next few decades. Manufacturing methods and ingredients improved, while refrigeration technology became cheaper and more efficient. By the 1920s, home refrigerators and freezers became more common, which gave the ice cream industry another boost. Sugar was rationed in the US during World War I, but the ice cream industry convinced the government that ice cream was an "essential food”. Ice cream factories were allotted sugar rations and production continued.
Ice cream increased in popularity until the Depression years caused a drop in sales for virtually all non-essential goods. Sales increased in the years leading up to World War II before leveling off in the post-war years. The rise of the giant supermarket created demand for cheaper, mass-produced ice cream, but quality suffered. The 1960s saw a resurgence in "premium"ice cream, while the following decades saw the market fragment into low-fat varieties for the health-conscious, including frozen yogurt, fruit bars, ice milk, fat-free ice cream, and dozens of other varieties. However, ice cream still makes up about 60 percent of the market share among frozen desserts. While ice cream is enjoyed worldwide, it has become an American tradition
生活不能缺少什么作文500字【二】
忽然，几个身影映入眼帘，仔细一看原来是几个小孩结伴去散步，看她们有说有笑的。心头一怔，是啊！我已经好久没出去玩了。滴滴滴......忽然手机响起了急促的声音，我赶紧跑去看，原来是朋友约我晚上出去玩。正好，我也想出去，便答应了。吃完晚饭，我正准备出门，结果被父母拦住了。
为什么我不能出去玩？我愤怒的说到。
哼，就你那成绩，你也有脸出去玩？现在竞争很大，你稍不留神就落后别人一大步，你看看你姐都没有出门，每天呆在家学习，就你特殊。你还有脸出去？父母带着嘲笑的语气坚决的说着。
难道我就不想考个好成绩吗？别人家的孩子考不好父母都捧她们做宝贝，每天还能出去玩，我为什么就不可以？难道我就不是人，所有的事都要父母规划？就算你们不让我出去玩，但在家也总得给我一点自由空间吧！比如：我和同学聊天，有时候跟男同学聊你们就骂我什么的着也就算了，但是跟女同学聊天，你们却在一旁边偷看，什么人啊！有时候我还会怀疑你们是不是我的父母。
我不是只会学习的'木头人，我是人，一个正常人，我也有喜怒哀乐，我也需要自由，而不是你们大人心目中的成绩，我还缺少自由！请你们不要把我的自由，甚至我的一切看得比成绩还要重！
我还缺少自由！
