2022届高考英语日训DAY 8 阅读理解+完形填空+语法填空

日训 DAY 8 阅读理解 & 完型填空 & 语法填空 第 1 页 DAY 8 阅读理解 & 完型填空 & 语法填空 日训——阅读理解篇章训练 北京东城区 2021 年期末 体裁：说明文 主题语境：介绍说明——新型防腐技术 难度：中 建议用时：7 分钟 Once small farmers in Masii, a remote village in Kenya, have picked their crops, all they can do is wait until a buyer trucks the crops. The system works fairly well for beans and corn, but mangoes — the area’s another main crop — spoil more quickly. If the trader is late, they rot. Obadiah Kisaingu, a farmer in Masii, estimates 40% of the village’s mango crop is lost because of spoilage. But a simple coating could change that. A company, SmartTech, has created a product that doubles the shelf life of fresh produce, enabling farmers like Kisaingu to access far-off, larger markets. More time for fresh produce on grocers’ shelves also means less food waste — a $ 2.6 trillion problem, according to the United Nations’ Food and Agriculture Organization (FAO). James Rogers, CEO of SmartTech, who has a PhD in materials science, wanted to solve the problem for food much in the same way that oxide barriers preventing rust(锈) have achieved for steel. Fortunately, researchers have found when plants made the jump from water to land hundreds of millions of years ago, they developed cutin, a barrier which is made of fatty acids that link together to form a seal around the plant, helping keep water in. The cutin was such a grand strategy that today you’ll still find it across the plant kingdom. Not that it’s exactly the same solution across the board: An orange can last longer than a strawberry not because of the thickness of its skin, but because of the difference in the arrangement of those cutin molecules(分子) on the surface. SmartTech’s challenge was identifying the key components of cutin. After extensive trials, Rogers and his team developed a natural and tasteless protective coating from plant material — stems, leaves and skins. The product extends the sweet spot between ripening and rot. And best of all, the treated produ