2022广东专版英语周报高二31答案

27.(1)H2(1分)(2)CaC2O4 2H SO42=CaSO4 H2C2O4(2分)适当增大硫酸浓度(或增大硫酸和草酸钙的投料比)(2分)(3)NaOH溶液和硫酸(2分)(4)酸(1分)NaHC2O4 NaHcO3=Na2C2O4 H2O CO2↑(2分)(5)CaCO3(2分)CaC2O4H2O=CaoO CO↑O2↑ H2Ot(2分)

【解题导语】本文为说明文,近年来璃床运动在中国年轻人中非常流行,成年人喜欢床是体验年的感觉,确床前需要进行热身,它是一个好的有氧适动32.B,本题答案定位至第二段,根据 but adults too have jumped on thetrend, hoping to relive their childhood.可知,成年人喜欢聯床是体验童年的感觉,故选B3D根据第四段 today' s trampoline parks are bigger, more professionaland more creative. There are separate zones for different functions可知,D正确,B选项的smle与文意相反,A和C未提及。34.B根据第六段段首 Indeed, a trampoline workout can be beneficial topeople' s health.可知B正确35.D根据第七段 You must do warm-up exercises before playing可知,蹦床前需要进行热身

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