大联考答案

①萃取时应控制V。/V的比值为②反萃取获得NSO,溶液的实验操作是(5)制iOOH。向NiSO,溶液滴加NaOH溶液，并同时加入NaCIo可以制得用作镍镉电池正极材料的OOH。为测定...

3.甲基叔丁基醚(MTBE)是一种性能优良的高辛烷值汽油添加剂和抗爆剂，工业上用异丁烯(B)与男醇在催化剂作用下合成MTBE:CH,OH(g)+B(g)一MTBE(g)。向恒温恒容容器中...

名校联盟2022~2023学年高二年级开学联考·化学参考答案、提示及评分细则1.B2.C3.A4.D5.A6.D7.C8.A9.B10.B11.A12.D13.B14.C15.D16.B17.(1)500mL容量瓶；胶头滴管（...

(2)球形冷凝管(2分)；CoH;NH+OH-→C6HNH2+H2O(3分)(3)①防止水蒸气冷凝，影响蒸馏效果(2分)②乙醚是易燃易挥发物质，防止爆炸；c(各2分)③184℃(2分)④43.9%(3分)13.(1...

(6)7;BC(每空2分)14.(1)O>C>C(或OC1、C)(2)6;p;5s25p(3)平面三角形；S0(或其他答案)(每空2分)15.(1)1s22s22p3s23p3{或[Ne]3s23p3}(2)①<②sp③<；硫原子的最外层电...

卷行天下·化学参考答案月考卷一化学反应的热效应1.D解析：硅太阳能电池将太阳能转化为电能，A项错误；锂离子电池能实现化学能与电能的相互转化，B项错误；太阳能...

A.研制水溶剂涂料替代有机溶剂涂料B.推广使用可降解塑料可减少白色污染C.用反应Cu+2HS0,(浓)一△-CuS0+S02↑+2H0榈备硫酸铜0D.用反应2CH2=CH,+02A82H,C人C,制备环...

D.甘罗在张唐答应入燕为相之后，又前往赵国进行游说。甘罗告诉赵王，秦燕相亲对赵国不利，并向赵王提出了割地给秦国的建议，赵王当即答应22.把文中画横线的句子...

答案：①不认为自己是有名之士，不想以此获取名声。②孙之翰立身于当世，文章流传于世间，跟写不写《唐论》刻入石碑没有必然联系。③不赞同李方叔所说的不得到当今...

17.答案示例：①无可奈何（无计可施、束手无策、无力回天、劳而无功）②一劳永逸（一蹴而就）③微不足道（不值一提、不足挂齿、无足轻重）【评分说明】本题3分，答...

“这大米老百姓如何买得起，简直是粒粒珠玑，享用的只是富豪阔佬，唉。”一直聊到鸡叫三遍，杨三才恋恋不舍揖别回房。第二天出发时，沙风里也雇了一匹马和一个马夫...

(二)参考立意①“三百六十行，行行出状元”，职业理想应该多元化，尊重孩子自己的选择。②教育应力避急功近利，摆脱世俗的奴役。③关注学生兴趣，树立人生理想，引导...

16.【典型情境题】宋朝诗人张耒称额联为“奇语”，奇在哪里？请简 要分析。(6分) 答：

书面表达One possible version:As the saying goes,"Reading is rewarding."When itcomes to reading,literary classics are one of the best choices.It's true...

Byfar the most popularample fromparagraph?thetwhat can tne mAfrican gray,the best talker of aboutoriginsspecies.Overthe past four decades,at least 1.3...

卷行天下·英语参苦答案周测卷一单句填空1.for 2.nationality 3.frightened 4.to hear 5.designer 6.confidence 7.lecturing 8.annoyed9.an 10.impression短语填...

2022梅州市高三一模参考答案第二部分阅读理解21-23 DDC 24-27C B BC 28-31 CAAC 32-35 BCDD36-40 DACEF第三部分第一节完形填空41-45 BADCA 46-50 BCADB 51-55 CD...

对话成独白前，你将有时间阅法各个小题，每小题5秒锦，听充后，车小题15，Wtd山将给出5秒钟的作答时问。每段对话或独白读两遍。A.Have a听第6段材料，回答第6至7...

第三部分语言知识运用（共两节，满分45分）Wang is one第一节（共20小题；每小题1.5分，满分30分）support 63a deep 64阅读下面短文，从短文后各题所给的ABC和D...

all are afraid of theience some sort ofedoesn't have to第二节（共5小题，每小题2分，洲分10分）阅读短文内容，perspective,you项。，从知文后的选项中选出能...

e college weosthe phone.You cn also get themat the college baokshop,whichon the ground door next to thadmissions office.第1版20)road阅读任务ITopromo g...

【耳素耳】Keys:(One possible version)1.I was shorter than other kids of my age2.But it didn't go smoothly at first3.I gradually became crazy about thi...

ooked.I was scared,whisper to myself,"It is so scary.Igranda·nen1 finally saw it,Idon't dare to taking the challenge.Howeing other childrertake第28期B...

W:I know.But you're always so good when the TV needs to befixed.M:Well,that's different.(Text 7)M:Lisa,how do you get your news every day?W:Well,I get...

1-year-old daughter,Karington,told me her support for a classmate with41 need.This42 actionpHerstorysarted with,"Mommy,I made a teacherry today.Ididn'...

第35期B1版Keys:(One possibleversion客观题除外)阅读训练营1-4 BADA5-7 CADng非常解读1-5 ACDEB完形小测ng1.because2.to getge3.returned4.mealsle5.understood...

秘密★启用前自贡市普高2023届第三次诊断性考试英语试题卷本试卷共150分，考试时间为120分钟。答卷前，考生务必将自己的姓名、准考证号填写在答题卡上，并在规定...

W:Listen,if the worst comes to the worst,we'll just have to M:Well,we circle round and round the ships and get in theset up a camp in those woods.way...

.Could you pleae d he chickens?The Great Wall runs across North China like a huge dragon.It winds()its way from城化邻B-Sorry,IA.can'tB.couldn'tC.mustn...

at work,butUnits3-5,(选择性必修)Book 4ethere a problemMarksoblem.(3)■试顺命制，（学英语）报社试题测评细第一部分听力（共两节，满分30分）ng to work late...