
巴中今年能复读嘛相关问题汇总
1、高考怎么可以复读吗?
2、高考复读生怎么报名?
3、今年新高考禁止复读?
4、高中复读有用吗?
5、高考复读好吗?
巴中今年能复读嘛入学检测化学选择题摘录
1、.碳跟浓硫酸共热产生的气体X和铜跟浓硝酸反应产生的气体Y同时通入盛有足量氯化钡溶液的洗气瓶中(如图装置),下列有关说法正确的是( )
①洗气瓶中产生的沉淀中有碳酸钡 ②在Z导管出来的气体中无二氧化碳
③洗气瓶中产生的沉淀是硫酸钡 ④在Z导管口有红棕色气体出现
①② B.③④ C.①④ D.②③
【知识点】非金属元素的单质及其化合物
【答案】
B
2、下列指定反应的离子方程式正确的是
A.将铜插入稀硝酸中:Cu+4H++2NO3 -=Cu2++2NO2↑+H2O
B.向Fe2(SO4)3溶液中加入过量铁粉:Fe3++Fe=2Fe3+
C.向Al2(SO4)3溶液中加入过量氨水:Al3++3NH3·H2O=Al(OH)3↓+3NH4+
D.Ca(HCO3)2溶液中加足量NaOH溶液:HCO + Ca2+ + OH-= CaCO3↓ + H2O
【知识点】离子反应
【答案】
C
3、下列两组热化学方程式中,有关ΔH的比较正确的是( )
①CH4(g)+2O2(g)===CO2(g)+2H2O(g) ΔH1
CH4(g)+2O2(g)===CO2(g)+2H2O(l) ΔH2
②NaOH(aq)+H2SO4(浓)===
Na2SO4(aq)+H2O(l) ΔH3
NaOH(aq)+CH3COOH(aq)===CH3COONa(aq)+H2O(l) ΔH4
A.ΔH1>ΔH2;ΔH3<ΔH4 B.ΔH1>ΔH2;ΔH3>ΔH4
C.ΔH1=ΔH2;ΔH3<ΔH4 D.ΔH1<ΔH2;ΔH3>ΔH4
【知识点】化学的反应中的物质变化和能量变化单元测试
【答案】
【答案】A
考点:反应热大小的比较
巴中今年能复读嘛入学检测英语选择题摘录
1、 It’s the same in China --- many people, ________ some are not overweight at all, are always going on diets or taking weight-loss pills, ________ are often dangerous.
A. whose; which B. of which; who C. of whom; which D. who; that
【知识点】定语从句 【答案】
C
解析:略
2、 It is ______ heavy a box _____ no one can move it.
A. such; that B. so; that C. too; to D. such; as
【知识点】状语从句 【答案】
B
3、 So long no see you. Very happy to see you here again. How long ____ in Europe?
A. did you study B. have you studied C. had you studied D .will you study
【知识点】动词时态与语态 【答案】
A
4、 At ______ games in Johannesburg, South Africa, the North Korean team, which returned to ______ World Cup after 44 years, lost in ______ close-scoring game, 1-2, to the Brazilians.
A. the; the; a B. /; /; the C. /; the; the D. the; /; a
【知识点】冠词 【答案】
A
解析:略
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