江苏省无锡市2025-2026学年上学期九年级英语精读训练（二）科技文专题2（含答案）

江苏省无锡市初三英语提优试卷 科技文专题 · CD篇难度强化训练（二） 出卷人：华威 【出题依据与背景说明】 本试卷依据《义务教育英语课程标准（2022年版）》及近年无锡市中考英语命题趋势设计，聚焦科技类说明文（Science & Technology Expository Texts），对标中考C、D篇阅读难度（即高阶理解、推理判断、词义猜测、主旨把握等能力要求）。 选材特点：改编自《Science News for Students》《IEEE Spectrum》、欧盟 Horizon 项目报告及教育部推荐 STEM 阅读材料，语言真实、结构清晰、术语适度； 能力侧重：强化“词义猜测”“指代理解”“作者态度判断”等高频难点； 教学价值：完形填空注重逻辑连接词、动词搭配、科技语境下的名词辨析； 使用建议：建议作为重点班月度提优卷或中考冲刺模拟卷，限时90分钟。 班级：_____　　姓名：_____　　得分：_____ 第一部分：完形填空（共20小题；每小题1分，满分20分） 完形填空 A Renewable energy is transforming how we power our world. Solar panels and wind turbines are now common sights, but one promising source remains largely untapped: fusion energy. Unlike nuclear fission—which splits atoms and produces long-lived radioactive waste—fusion combines light atoms (like hydrogen) under extreme heat and pressure to release massive amounts of clean energy, just as the sun does. Scientists have been trying to achieve controlled fusion for over 70 years. The main challenge is containing the super-hot fuel, called plasma, which reaches temperatures over 100 million degrees Celsius—hotter than the sun’s core! No physical container can withstand that, so researchers use powerful magnetic fields to hold the plasma in a donut-shaped chamber known as a tokamak. In 2022, a major breakthrough occurred at the National Ignition Facility in the U.S.: for the first time, a fusion reaction produced more energy than was used to start it. This milestone, called “net energy gain,” brings us closer to practical fusion power plants. If successful, fusion could provide nearly limitless electricity with no carbon emissions and minimal waste. However, commercializing fusion will take time. Engineers must now design reactors that are not only efficient but also --1-- enough for widespread use. Materials that can survive decades of neutron bombardment are still under development. Moreover, the cost of building these facilities remains extremely high. Despite hurdles, global investment is surging. Projects like ITER in France—a collaboration among 35 nations—are paving the way. As one physicist said, “Fusion isn’t a question of if, but when. And when it arrives, it could --2-- the world’s energy landscape forever.” Governments and private companies alike see fusion as the ultimate clean energy solution. Startups like Commonwealth Fusion Systems and Tokamak Energy are racing to build compact reactors using new superconducting magnets. These innovations could shrink reactor size from building-scale to room-scale, making fusion accessible even to remote communities. Yet public understanding lags behind scientific progress. Many confuse fusion with fission, fearing meltdowns or radiation. ... ...