2025届高三英语二轮复习专项：外刊时文 阅读理解 C&D（含解析）

Passage 1 Divers might soon be able to communicate over long distances underwater by sending radio messages along the water's surface. Regular radio frequencies can't travel far through water. Underwater communication systems like sonar can transmit over long distances underwater, but they can't carry large amounts of information and are relatively slow. They can also disturb marine wildlife. Now, a co - founder of communication firm SonarWave, Alex Wilkins, and his colleagues from California have found a way to use radio waves for underwater communication. They exploit how electromagnetic radiation travels along the water's surface. Two divers, completely submerged in the water, can use their "walkie - talkies" to communicate suddenly. This makes sense according to the theory put forward by Pierre de Fermat in the 17th century, which states that electromagnetic radiation always takes the quickest possible path to its destination. The longer it takes to reach net zero, the greater the risk that global warming will continue for decades or millennia even after we have stopped emitting greenhouse gases, says an assessment by the National Centre for Meteorological Research. This means we may have to emit even less carbon dioxide than we thought if we want to limit warming to, say, 2℃, making carbon budgets even smaller than current estimates. "The timing at which we reach net zero is also key," says Roland Séférian at the centre. Climate modellers once assumed that CO levels would drop fairly quickly when the world is 2℃ warmer than pre - industrial times. However, standard climate models don't include all feedbacks. Newer, more comprehensive "Earth system" models suggest that if we reach net zero when the world is 2℃ warmer, there is a 33 - per - cent chance that the planet would continue ocean warming, meaning surface warming halts within a few years. Not all climate models are the same. Additional warming doesn't mean unstoppable warming. Reaching net zero becomes even more important as a milestone. But in a comment, Michael Mann at the University of Pennsylvania points out that we should also consider the possibility of negative emissions to really limit warming. What is the problem with traditional underwater communication systems like sonar A. They are too expensive to use. B. They can't transmit over long distances. C. They can't carry much information and are slow. D. They are difficult to operate. How do the new underwater "walkie - talkies" work A. They use sonar technology to send messages. B. They send radio messages along the water's surface. C. They rely on satellite signals to communicate. D. They directly transmit radio waves through water. What does the assessment by the National Centre for Meteorological Research suggest A. We don't need to worry about global warming after reaching net zero. B. Reaching net zero quickly is important to limit global warming. C. Carbon budgets should be larger than current estimates. D. CO levels ... ...