2022届衡水金卷·先享题·临考预测卷·新高考 语文(B)试题答案，知嘛答案网已经编辑汇总了2022届衡水金卷·先享题·临考预测卷·新高考 语文(B)试题答案的各科答案和试卷，更多试卷答案请关注知嘛答案。
27.(1)Ag([文]1分)3Pb+8H[章]NO3(稀)-3P[来]b(NO3)2+2[自]NO↑+4H2O([知]2分)防止银被溶解[嘛](1分)(2)HN[答]O3(1分)浸出时[案]部分Pb2+生成P[网]bSO4随浸出渣排[文]出,降低PbSO4[章]的产率(1分)3)[来]PbSO4+2CH[自], COO--Pb(C[知]H, COO)2+SO([嘛]1 s)(4)有(1分[答])当Pb2+完全沉[案]淀后,溶液中c(S[网]O-)≥1.6×1[文]0-3mol·L-[章]1,此时,c(Ca[来]2+)·c(SO-[自])≥8×10-5&[知]gt;4.9×10[嘛]-5,故有CaSO[答]4存在(2分)(5[案])粗PbSO4产品[网]含有杂质CaSO4[文],用Pb(NO3)[章]2溶液多次洗涤,以[来]得到纯净的PbSO[自]4(2分)(6)1[知].6×10(2分)[嘛]
21.A细节理解题[答]。根据第一段中的“[案] A trip to Loondon isn't complete without a visit to London's theatrela[网]ndone of the worlds most attractiv[文]e places for live theatre performan[章]ces”可得答案2[来]2D细节理解题。根[自]据第三段中的“ before exploring[知] the Globe exhibitio[嘛]n, the worlds largest exhibitio[答]ndevoted to the well-know[案]n poet and playwrigh[网]t”可得答案。23[文].A推理判断题。根[章]据最后一段中的“ Musical theatre specialis[来]t Neil Maxfield leads this two-hour West Endwalkin[自]g tour”可得答案[知]。
