高考英语概要写作专项突破.docx

概要写作 一、Directions: Read the following passage. Summarize the main idea and the main point(s) of the passage in no more than 60 words. Use your own words as far as possible. Rock Climbing — conservationists’ new concern Now, with its first appearance at this year’s Tokyo Olympics, the once minority sport is set to reach new heights. Yet the popularity of rock climbing and its sister sport, bouldering (where climbers scramble up large rocks without the use of ropes or safety belts), is raising questions about the damaging environmental effects of climbing chalk — a common and essential climbing tool. Made from magnesium carbonate (碳酸镁), climbing chalk is the same substance that gymnasts and weightlifters use to improve their grasp on bars and weights. In fact, it was first introduced to rock climbing in the 1950s by John Gill. Since then, amateur and professional climbers alike have come to depend on the chalk’s properties of removing water and increasing friction (摩擦力) — and have been leaving long stripes of the stuff on rock faces around the world. The resulting “chalk graffiti” has become so bad in the United States that parks are beginning to restrict its use. Utah’s Arches National Park allows only colored chalk that mostly matches rocks, while Colorado’s Garden of the Gods National Natural Landmark banned all chalk and chalk substitutes. Beyond the visual pollution, new research suggests chalk may be harming the plants that grow on rocks. The latest study on the effects of climbing chalk, released October 2020, found that it negatively impacted both the growing and survival of four species of ferns and mosses (蕨类和苔藓) inhabiting rocks in laboratory settings. That matters because some climbing spots, such as erratic boulders (the study’s focus), host unique ecosystems. These unpredictable boulders — rocks scattered across the globe by large masses of slowly flowing ice at the end of the Ice Age — are islands of vegetation, different from the land they sit on.