炎德英才长沙市一中2022语文月考一答案

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40. To lead in the topic(of gendered stereotype bias).41 Gander-related biases are everwhere sometme we may not een realize that we are biasedPeople generally give males more benefits m the job market意思相同且表述准确即可4? Confirm ation biasBsmd of bias where people are mcre Ikelw to choose of associatepostive qualta to people more like themselves or belong to the same soal md ethnic group asthes do或Confirmation bias is a kmd of biar where people regard someone more similar to themselve atnumenor human ben gs43. Do wou consider vourself biased? why or why not?(About 40 wordsSadly I am biased n cartan ways, although I never thought of it thus war batere. For example, Isometmes asociate woman with weaknes, or think gurls are not m general good at math orscience I often believe peeple from my hometown are more upright and hard-working All ofthese are biases, as I see nowBeing objective is truly hard but that ' s not the reason ior us to be biased.

27.(1) 5价(1分)(2)不能(1分)(3)5Na K2TaF7=Ta 5NaF 2kF(不写加热符号不扣分,2分)(4)取最后一次的洗涤液于试管中,滴入硝酸银溶液,若不产生沉淀,则说明洗涤干净;若产生沉淀,则说明没有洗涤干净(或其他合理答案,2分)(5)增大接触面积提高钽的浸出率(1分)(6)Fe(OH)3(1分)(7)蒸发浓缩、冷却结晶(2分)(8)8(2分)(9)80%(2分)【解析】本题主要考查制备金属钽及制备硫酸钽的工艺流程,考查学生对元素化合物的理解能力和综合运用能力。(1)氧元素为-2价,则钽元素为 5价(2)氮气会与钠发生反应,应该用惰性气体氩气。(8)从化学方程式看,只有氧元素化合价升高,每消耗1 mol Ta2O3,生成2molO2,转移电子的物质的量为8mol(9)设钽的转化率为w:TagOTaz(SO)142g650g10t×6.63%Xv0.78tv=80%。