【题目】下列关于有机化合物的说法正确的是( )
A.聚氯乙烯分子中含碳碳双键 B.以淀粉为原料可制取乙酸乙酯
C.丁烷有3种同分异构体 D.油脂的皂化反应属于加成反应
科目:高中地理 来源: 题型:
【题目】A
阅读下面短文,从每题所给的A、B、C、D四个选项中,选出最佳答案。
Driving on up to Yosemite with my family was exciting but nerve-racking (神经紧张的). I had never been to such an amazing national park before, yet I wasn’t the most athletic person so I knew that I couldn’t stick through all the hiking up and down. It actually ended up being a fun and adventurous experience.
The ride there was definitely long but worth it. As I woke up from my nap, I saw the beautiful scenery of the tall mountains and beautiful streams. The trails were made nicely for visitors. The waterfalls were breathtaking. Climbing up rocks was one of my favorite parts. Even though I fell a couple of times, I still have a lot of fun. The fact that my family and I spent so much time together all trying to find out which route to take and what views to watch really brought us closer together.
The great thing about nature is that, it’s just you, the views, and the people around you. There’s nothing there to bother you and it’s the best way to relax and enjoy yourself. Yosemite has 5 of the world’s highest waterfalls, and about 300 lakes. The structure of each mountain is incredible; it’s formed in ways that almost take your breath away. Some of them are of a deep dark color with waterfalls forming; some are formed with spots of green peeking (窥探) out. It’s definitely something you wouldn’t want to miss.
Yosemite isn’t the only great National Park but based on my experience I highly recommend going out and enjoying nature with family and friends. It’s a great time to bond, laugh, and take in what Mother Nature offers.
【】The author writes the first paragraph mainly to _____.
A. introduce the topic of this passage
B. offer an example to us
C. tell us his future plan for hiking
D. describe a national park
【】While climbing up rocks, the author was _____.
A. nerve-racking B. injured
C. pleased D. worried
【】According to the passage, Yosemite _____.
A.is crowded with visitors every day
B.is the only great National Park
C.is worth travelling to
D.is nothing but a common destination
【】The author suggests us _____.
A. keeping a good bond with other people
B. visiting Yosemite now and then
C. trying to protect the environment
D. going out to enjoy the beauty of nature
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科目:高中地理 来源: 题型:
【题目】取一定质量的Cu、Cu2O、CuO的固体混合物,将其分成两等份。其中一份通入足量的氢气充分反应后固体质量为25.6 g,另一份加入500 mL稀硝酸中固体恰好完全溶解并产生标准状况下的NO气体4.48 L,则稀硝酸的浓度为( )
A.2 mol/L B.1.6 mol/L
C.0.8 mol/L D.0.4 mol/L
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科目:高中地理 来源: 题型:
【题目】积极开发新能源已经成为世界各国的共识。读有关图文资料,回答问题。
东海大桥风电场位于东海大桥以东,将由34台巨大的白色大风车组成,形成一片14平方千米的海上风电示范区,装机容量达100兆瓦,通过海底电缆传回电力,可为10万户家庭提供全部用电,年减排二氧化碳效应相当于5万辆汽车停驶。
INCLUDEPICTURE "C:\\Q88.TIF" \* MERGEFORMATINET
(1)按照可再生与非可再生能源分类,太阳能、风能、水能属于__________________能源,其中属于新能源的是______________。从协调人地关系的角度看,人类积极开发新能源的意义是____。(至少答出两点)
(2)读图回答拉萨和重庆哪个地区更适宜发展太阳能,并结合两地自然条件分别说明理由______。
(3)分析上海建设东海大桥风电场的有利因素和不利因素。
有利因素: ______________。(至少答出两点)不利因素: _______________。
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科目:高中地理 来源: 题型:
【题目】室温下,下列溶液中粒子浓度大小关系正确的是
A.Na2S溶液:c(Na+)>c(HS-)>c(OH-)>c(H2S)
B.Na2C2O4溶液中:c(OH-)=c(H+)+c(HC2O4-)+2c(H2C2O4)
C.Na2CO3溶液:c(Na+)+c(H+)=2c(CO32-)+c(OH-)
D.CH3COONa和CaCl2混合溶液:c(Na+)+c(Ca2+)=c(CH3COO-)+c(CH3COOH)+2c(Cl-)
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科目:高中地理 来源: 题型:
【题目】生活中处处有化学。请根据你所学过的化学知识,判断下列说法中错误的是:( )
A.医疗上常用体积分数为70%~75%的酒精作消毒剂
B.为防止流感传染,可将教室门窗关闭后,用食醋熏蒸,进行消毒
C.氯化钠是家庭常用的防腐剂,可用来腌制食品
D.使用液化石油气可以杜绝厨房污染
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科目:高中地理 来源: 题型:
【题目】我国古代科技发达,下列有关古代文献的说法错误的是( )
A.明朝的《本草纲目》记载“烧酒非古法也,自元时创始,其法用浓酒和糟入甑(指蒸锅),蒸令气上,用器承滴露。”该段文字记载了白酒(烧酒)的制造过程中采用了蒸馏的方法来分离和提纯。
B.汉朝的《淮南万毕术》、《神农本草经》记载“白青(碱式碳酸铜)得铁化为铜”,“石胆……能化铁为铜”都是指铜可以采用湿法冶炼。
C.清初《泉州府志》物产条载: “初,人不知盖泥法,元时南安有黄长者为宅煮糖,宅垣忽坏,去土而糖白,后人遂效之。”该段文字记载了蔗糖的分离提纯采用了黄泥来吸附红糖中的色素。
D.晋代葛洪的《抱朴子》记载“丹砂烧之成水银,积变又成丹砂”,是指加热时丹砂(HgS)熔融成液态,冷却时重新结晶为HgS晶体。
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科目:高中地理 来源: 题型:
【题目】阅读材料,回答下列问题。
材料一 大庆市是因资源开发及资源加工等相关工业集聚而形成的资源型城市,是我国目前最大的陆上油田和重要的石化工业基地。截至2008年大庆油田已经开采出可采储量的75%。
材料二 大庆市近年主要经济和产业指标值统计表:
年份 | 2005 | 2008 | 2012 |
6DP(亿元) | 1400 | 2220 | 4000 |
三次产业占GDP比重 | 3∶86∶11 | 4∶82∶14 | 4∶81∶15 |
采掘业占工业总产值比重(%) | 82 | 79 | 72 |
(1)大庆石油开采及石油化工的布局属于______指向型工业。该城市产业结构的主要特征有_____。
(2)该工业地域各企业之间的工业联系属于______联系。众多企业的集聚优点有______。
(3)大庆市为促进社会经济的可持续发展可以采取的措施有_________。
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科目:高中地理 来源: 题型:
【题目】【2015海南化学】0.1mol下列气体分别与1L0.lmol·L-1的NaOH溶液反应,形成的溶液pH最小的是 ( )
A.NO2 B.SO2 C.SO3 D.CO2
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