河北辛集中学2022-2023学年高二英语寒假作业三

河北辛集中学2021级高二寒假作业 英语学科试卷（三） 一、阅读理解 Chinese spacecraft finds lunar soil could make oxygen and fuel on the moon. Lunar soil could be used to make oxygen and other products from chemical reactions that mimic photosynthesis (模拟光合作用), according to an analysis of samples brought back to Earth by the Chang’e 5 spacecraft. Reliable supplies of such substances are necessary for any future lunar base. It is expensive to send goods into space, so any material that can be found on the moon and that doesn’t have to be brought from Earth can save a lot of money. Yingfang Yao at Nanjing University, China, and his team examined a lunar soil sample to see if it could be used as a catalyst (催化剂) for a system that would transform carbon dioxide and water released by astronauts’ bodies into oxygen, hydrogen and other useful by-products that could be used to power a lunar base. Yao and his team first analysed their sample using techniques to identify catalytically active components of the soil. They found high levels of iron and magnesium-based compounds (复合物) that could be useful in a reaction mimicking the photosynthesis that occurs in green plants. The researchers then tested the soil as a catalyst in various chemical reactions that would form part of a photosynthesis-like process to produce hydrogen and oxygen from CO2 and water. They found that the soil’s efficiency wasn’t as good as catalysts we have on Earth and isn’t currently good enough to generate products in sufficient quantities to support human life on the moon, but that slight adjustments to the structure and composition of the lunar soil sample might see significant improvements. 1．Why is the finding about lunar soil’s products important? A．It gives evidence for plants to grow outside Earth. B．It provides efficient support for future lunar base. C．It makes clear how the moon is mostly made up of. D．It tells how photosynthesis happens on the moon. 2．What’s the aim of