陵县百事通
2024-01-24
450
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中学英语单词用法总结学习精编throw和through和throat等 three [θriː] num.三；三个 We waited three months before going back to see the specialist.我们等了3个月才回去见那位专家。 throat [ eratx ] n. [C]咽嗽，喉咙 As she stared at him she felt her throat go dry.她盯着他看的时候，感觉自己的喉咙发干。 through [θruː] prep. 穿过 ‖ adv.从始至终 Did you read the book through?那本书你看完了吗? He went through the forest the next day.次日他穿过了森林。 I hoped all through you would come back.我一直希望你能回来。[all through一直地] 高中英语单词听力 人教高中英语单词mp3 人教版高中英语单词 人教版初中英语mp3 throw (threw, thrown) [θrəʊ] v. 投；掷；扔 He threw the stone in the air.他把石头抛向空中。 Pick out some good apples from the box, and throw away the rest.把好苹果从盒子里捡出来，剩下的扔了。[throw away扔掉] 短语：1. throw away 抛弃，浪费； 2. throw down 摔倒，推翻 3.throw oneself into 专心于； e.g. Themselves into their work. 他们专心致志地工作起来。 4.throw up 抛起，举起,辞去： e.g. You’ve thrown up a very promising career. 你放弃了一个很有前途的职业。 5.throw off 匆匆脱掉： e.g. She threw off her coat.她随手脱掉大衣。 Space is becoming more crowded. Quite a few low-Earth-orbit (LEO) satellites have been launched into the sky, which are designed to move around the Earth only a few hundred kilometres above its surface. SpaceX and OneWeb plan to launch LEO satellites in their thousands, not hundreds, to double the total number of satellites in orbit by 2027. That promises to change things on Earth. LEO satellites can bring Internet connectivity to places where it is still unavailable. This will also be a source of new demand for the space economy. Morgan Stanley, a bank, projects that the space industry will grow from $350 billion in 2016 to more than $1.1 trillion by 2040. New Internet satellites will account for half this increase. For that to happen, however, three worries must be overcome. Debris (碎片) is the most familiar concern. As long ago as 1978, Donald Kessler, a scientist at NASA, proposed a scenario (设想) in which, when enough satellites were packed into low-Earth orbits, any collision could cause a chain reaction which would eventually destroy all spacecraft in its orbital plane. Solutions exist. One solution is to grab the satellites with problems and pull them down into the Earth’s atmosphere. Another is to monitor space more closely for debris. But technology is only part of the answer. Rules are needed to deal with old satellites safely from low-Earth orbits. Cyber-security is a second, long-standing worry. Hackers could take control of a satellite and steal intellectual property, redirect data flows or cause a collision. The satellite industry has been slow to respond to such concerns. But as more of the world’s population comes to rely on space for access to the Internet, the need for action intensifies. Measures will surely be taken to protect network security. The third issue follows from the first two. If a simple mistake or a cyber-attack can cause a chain reaction which wipes out hundreds of billions of dollars of investment, who is responsible for that? Now the plans of firms, wishing to operate large numbers of satellites are being studied. But there is a long way to go before the risks are well understood, let alone priced. As space becomes more commercialized, mind-bending prospects open up: packages moved across the planet in minutes by rocket rather than by plane, equipment sent to other small planets, passengers launched into orbit and beyond. All that and more may come one day. But such activities would raise the same questions as LEO satellites do. They must be answered before the space economy can truly develop. 32. What can we learn about LEO satellites from the passage? A. They will monitor old satellites. B. They will limit the space economy C. They will increase in large numbers. D. They will move beyond the Earth as far as possible. 33. What might be one of the purposes of launching LEO satellites? A. To avoid network attack. B. To lighten the financial burden of space firms. C. To accelerate the development of bank industry. D. To make the Internet accessible to backward areas. 34. According to Kessler, when could a collision happen to destroy all spacecraft? A. When hackers could take control of a satellite. B. When hackers could steal intellectual property. C. When a simple mistake or a cyber-attack happened. D. When as many as satellites were packed into low-Earth orbits. 35. Which statement might the author agree with? A. The plan should be further confirmed for its ownership. B. The plan should be continued because of its advantages. C. The plan should be carried out carefully to avoid risks. D. The plan should be stopped in the face of potential risks. 
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