山西省吕梁市交口县2022-2023学年七年级第二学期学业水平达标卷英语试卷试卷答案

山西省吕梁市交口县2022-2023学年七年级第二学期学业水平达标卷英语试卷试卷答案正在持续更新，目前2025百师联盟答案网为大家整理了相关试题及答案，供大家查缺补漏，高效提升成绩。

0Chinese spacecraft finds lunar soil could make oxygen and fuel on the moon.Lunar soil coul be use to mke oxygen and ther productsrom chemical reation thatmmicphotsyhesis(模拟光合作用)，oringiofme brought bck to Eath by the Chang5spaceraf.Reliable supplies of such substances are necesary foryfuture r base.It is expensive to send goods into spacesany material that ean be found on the moon and thatdoesn't have to be brought from Earth can save a lot of money.Yingfang Yao at Nanjing University,China,and his team exmined a lunar soisametoeefcould be used as acatalyst(for a system that would ransor cabon dioxidend releasedby astronautsbodies into oxygen,hydrogen and other useful by-products that could be used to power alunar base.Yao and his team first analysed their sampe using techniques to identify catalytically activecomponents of the soil.They found high levels of iron and magnesium-based compounds (thatcould 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 ofa photosynthesis-like process to produce hydrogen and oxygen from CO and water.They found that thesoil's efficiency wasn't as good as catalysts we have on Earth and isn't currently good enough to generateproducts in sufficient quantities to support human life on the moon,but that slight adjustments to thestructure and composition of the lunar soil sample might see significant improvements.32.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 what the moon is mostly made up of.D.It tells how photosynthesis happens on the moon.33.What's theaim of Chinese scientistsstudyaboutA.To test its chemical nature.B.To compare it with that from the earth.C.To analyze its elements and by-products.D.To find useful mines that are rare on the earth.34.What is used in the research?A.A green plant.B.An iron component.C.A lunar soil sample.D.Oxygen and hydrogen.英语试题（全国卷）第8页（共12页）饭椒南明：本试题卷为华中师范大学出版社正式出版物，版权所有，盗版必完。