限时练15 阅读理解+七选五+读后续写-【红对勾】2023版新高考英语二轮复习讲与练

第一部分　 题型组合限时练 　 　 　 　 限时练 15　 阅读理解+七选五+读后续写 (时间:40 分钟) Ⅰ、阅读理解 (2022·山西一模) If you􀆳re trying to build something that won􀆳t sink, making it out of metal seems like a terrible idea. We make boats and ships out of metal because it􀆳s strong and lasts a long time, but it weighs a lot and, if something goes wrong, there􀆳s nothing stopping it from sinking to the bottom. Researchers from the University of Rochester have come up with a potential solution. It􀆳s a metal that absolutely hates water, strongly repelling (排斥) it and creating pockets of air that allow the metal to float under just about any circumstance. Its inventors believe it could revolutionize ship design and create truly unsinkable boats. The secret is a special pattern that is etched ( 蚀刻) into the surface and that traps air and prevents water from making contact, pushing it away. The team says this superhydrophobic (超疏水 的) etching technique was inspired by the natural world. The bodies of fire ants are hydrophobic, and spiders that make underwater webs use their bodies to trap air and carry them beneath the surface. “The essential insight is that superhydrophobic surfaces can trap a large air volume, which points towards the possibility of using the surfaces to create buoyant devices,” the researchers explain in a new research paper. To demonstrate how the metal behaves, the researchers designed an experiment with two seemingly identical metal discs. One of the discs was normal metal, while the other was the same material with the special e