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Are you afraid of moving up to senior high school? It is a completely new experience, but you shouldn’t worry. We’ve put together a guide to help you. You are not alone Remember that everybody else in your grade is in the same boat. You may not notice it, but they are just as nervous as you are. Moving up to senior high school is a chance, not a problem. Things are different, and all you need to do is be polite and learn the new rules. The teachers will help If you don’t know what to do or are worried about something, then ask for help. Teachers are probably the best people to turn to because they have experience in helping new students. Everything changes There are lots of differences between junior high school and senior high school. You will have your lessons with different teachers in different rooms. You will have homework for different subjects on different days, so make sure you get organized. Other points If you’ve got an elder brother or sister at senior high school, then ask them for advice. Be yourself! It sounds simple, but people will respond much better to you if you act naturally. Going to bed early makes a difference. You’ll also find it easier to get up in the morning! 小题1: The author says that you’re not alone because other students______ A.are polite and nervous B.will help you C.feel the same as you do D.will learn the new rules with you 小题2: When you don’t know what to do, you can______ A.write your problem down B.watch your brothers C.go to bed early D.turn to your teachers 小题3: The main purpose of the passage is to ___________? A.Tell students about a new experience B.help students that are going to senior high school C.tell students that teachers are the best helpers D.teach students how to organize themselves
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举一反三
【单选题】以下色彩为互补色的是
A.
黑与白
B.
黄与绿
C.
黄与蓝
D.
红与橙
【多选题】能发生呫吨氢醇反应的是
A.
苷元-2-去氧糖甲醚
B.
苷元-6-去氧糖甲醚
C.
苷元-3-去氧糖-D-葡萄糖
D.
苷元-2,6-二去氧糖-D-葡萄糖
E.
苷元-2-去氧糖-2,6-二去氧糖甲醚
【简答题】已知100mL 0.1mol?L -1 的NaHSO 4 溶液中H + 的物质的量浓度为0.1mol?L -1 ,请回答下列问题: (1)写出NaHSO 4 在水溶液中电离的方程式______. (2)若向上述NaHSO 4 溶液中加入0.2mol?L -1 Ba(OH) 2 溶液,使溶液恰好呈中性,写出该反应的离子方程式并计算所需Ba(OH) 2 溶液的体积以及生成BaSO 4 沉淀的质量.
【单选题】以下色彩为互补色的是
A.
黑与白
B.
黄与绿
C.
黄与蓝
D.
红与绿
【单选题】向100 mL 0.1 mol·L -1 硫酸铝铵[NH 4 Al(SO 4 ) 2 ]溶液中逐滴滴入0.1 mol·L -1 Ba(OH) 2 溶液。随着 Ba(OH) 2 溶液体积V的变化,沉淀总物质的量n的变化如图所示。则下列说法中正确的是(    )
A.
a点发生反应的离子方程式是: Al 3+ +2SO 4 2- +2Ba 2+ +3OH — = Al(OH) 3 ↓+2BaSO 4 ↓
B.
b点消耗Ba(OH) 2 溶液体积为200mL
C.
从a→b 、b→c点过程中发生反应的离子方程式依次为:NH 4 + +OH - =NH 3 ·H 2 O Al(OH) 3 +OH - =AlO 2 - +2H 2 O
D.
沉淀的质量:a点>c点
【单选题】向100 mL 0.1 mol·L -1 硫酸铝铵[NH 4 Al(SO 4 ) 2 ]溶液中逐滴滴入0.1 mol·L -1 Ba(OH) 2 溶液。随着Ba(OH) 2 溶液体积V的变化,沉淀总物质的量n的变化如右图所示。则下列说法中正确的是(     )
A.
a点对应的沉淀只有BaSO 4
B.
c点溶液呈碱性
C.
b点发生反应的离子方程式是:Al 3+ +2SO 4 2 - +2Ba 2+ +3OH - =Al(OH) 3 ↓+2BaSO 4 ↓
D.
c点加入Ba(OH) 2 溶液的体积为200 mL
【单选题】以下色彩为互补色的是()。
A.
黑与白
B.
黄与绿
C.
绿与蓝
D.
红与青
【多选题】能发生呫吨氢醇反应的是
A.
苷元-2-去氧糖甲醚
B.
苷元-6-去氧糖甲醚
C.
苷元-6-去氧糖-D-葡萄糖
D.
苷元-D-葡萄糖
E.
苷元-2,6-二去氧糖-D-葡萄糖
【简答题】某宗土地的规划容积率是2,可兴建10000平方米的住宅楼,经评估总地价是200万元,请问该土地的单价是多少?
【单选题】向100 mL 0.1 mol·L -1 硫酸亚铁铵[(NH 4 ) 2 Fe(SO 4 ) 2 ]溶液中逐滴滴入0.1 mol·L -1 Ba(OH) 2 溶液。随着Ba(OH) 2 溶液体积V的变化,沉淀总物质的量n的变化如图所示。则下列说法中正确的是(   )
A.
a点时溶液中所含主要溶质为(NH 4 ) 2 SO 4
B.
a→b段发生反应的离子方程式是:S +Ba 2+ BaSO 4 ↓
C.
b点为最大沉淀量,对应的纵坐标值为0.02
D.
c点加入Ba(OH) 2 溶液的体积为200 Ml
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