1、To study and implement the spirit of the two sessions is the primary political task of the educators in 2018. Through the study of the spirit of the two sessions, I have a profound awareness that the key to the prosperity and development of the country lies in the Party, and the key to the all-round
2、 rejuvenation of the nation lies in education. The two sessions were held on March 3, and the two sessions have attracted much attention. The Congress of democracy, unity, harmony, and pragmatism has determined the work of economic and social development in 2018, which is of great significance for f
3、urther promoting scientific development, promoting social harmony, and continuously opening up a new situation for the cause of socialism with Chinese characteristics. At present, the most important political task before us is to concentrate on the two Will spirit study well, carry out well. Reform
4、is still the focus of this years two sessions. Our party should continue to deepen the reform in an all-round way and unswervingly go on, and promote the modernization of the national governance system and governance ability, which requires the Party to improve its governing ability and efficiency a
5、nd raise its work level. The anti-corruption issue is also the focus of more efforts, because in the past year, our country has made great progress on the road of fighting corruption and promoting integrity, and has cracked down on many corrupt officials. To those who do not wholeheartedly for the w
6、elfare of the people of the government personnel heavy blow and warning. And it is precisely because of the vigorous administration of the party and the state that some public funds eat and drink. Corruption and other phenomena have mostly disappeared, so this years deep reform选择题训练（2）一、选择题（每小题只有一个正
7、确答案，每小题4分，共32分）1、下列叙述中，不正确的是： 原子晶体中只含有极性键；金属在常温时都以晶体形式存在；每个水分子内含有两个氢键；分子晶体中一定有分子间作用力，有的还可能有氢键。 A B C D2、在一定条件下，RO3n和氟气可发生如下反应：RO3nF22OHRO42FH2O。从而可知在RO3n中，元素R的化合价是： A4 B 5 C6 D73、某混合溶液由两种或三种物质溶于水制成，且在溶液中，c(K+)=c(Cl)，c(Na+)=2c()。则溶质可能是：A .KCl、Na2SO4 B. KCl、Na2SO4、NaCl C. NaCl、Na2SO4、K2SO4 D .KCl、K2SO
8、4、Na2SO44、下列关于钠的化合物的叙述，错误的是：A.硫酸钠晶体俗称芒硝，它是造纸的重要原料B.澄清的石灰水中滴加碳酸钠溶液有白色沉淀，滴加碳酸氢钠无白色沉淀C.氟化钠是一种农药，可杀灭地下害虫D.碳酸氢钠不适合给胃溃疡病人使用5、某研究性学习小组为了探索镁粉与溴水反应的机理，做了如下四组实验：将镁粉投入冷水中，未见任何现象；将镁粉放入溴水中，观察到只是开始时产生极少量的气泡，但溴水的颜色会逐渐褪色；将镁粉放入液溴中，未观察到任何明显现象；向含足量镁粉的液溴中滴加几滴水，观察到溴的红棕色很快褪去。则下列关于镁与溴水的反应机理的论述中正确的是： A镁粉只直接与溴水中的溴反应 B镁粉只与溴水
9、中的酸反应C镁粉同时与溴水中的溴和酸反应 D镁粉在水的催化下与溴发生反应6、下列离子方程式书写正确的是：A将Ba(OH)2溶液不断加入KAl(SO4)2溶液中反应至沉淀物质的量最大：3Ba2+ + 6OH + 2Al3+ + 3SO42= 3BaSO4+ 2Al(OH)3BCl2通入冷水中：Cl2 + H2O = Cl + ClO + 2H+CCuSO4溶液跟Ba(OH)2溶液混合：Ba2+ + SO42 = BaSO4D漂白粉溶液中通入SO2气体：Ca2+2ClO-+SO2+H2O=CaSO3+2HclO7、下列各组离子能在指定溶液中,大量共存的是：无色溶液中：K+，Cl，Na+，H2PO4
10、，PO43，SO42使PH=11的溶液中：CO32，Na+，AlO2，NO3，S2，SO32水电离的H+浓度C(H+)=1012molL1的溶液中：Cl，HCO3，NO3，NH4+，S2O3加入Mg能放出H2的溶液中：Mg2+，NH4+，Cl，K+，SO42使甲基橙变红的溶液中：Fe3+，MnO4，NO3，Na+，SO42酸性溶液中：Fe2+，Al3+，NO3，I，Cl，S2A B C D 8、在反应a BrF3 + b H2O = c HBrO3 + d HBr + e HF + f O2 中（a、 b 、c、 d、 e、 f是各物质的化学计量数）,若0.3mol H2O被氧化,则被水还原的
11、 BrF3 的物质的量是：A.0.15mol B. 0.2molC. 0.3mol D. 0.4mol 二、选择题（每小题4分，10小题共40分，每小题有一个或两个正确选项。）9、如图所示: 若关闭阀，打开阀，让一种含氯气的气体经过甲瓶后，通入乙瓶，布条不褪色；若关闭阀打开阀，再通入这种气体，布条褪色。甲瓶中所盛的试剂可能是： 浓硫酸；饱和氯化钠溶液； 亚硫酸钠溶液； 饱和碳酸氢钠溶液A. B. C D. 10、 在0、101kPa下，下列哪组气体混和后所得气体的平均相对分子质量可为50 ：A、O2, F2 B、HF, Cl2 C、HI, HBr D、HI, Cl211、在硫酸铝、硫酸钾和明矾
12、的混合溶液中，如果c（SO42）=0.2molL1，当加入等体积等浓度的KOH溶液时，生成沉淀恰好溶解，则原混合物中K+的物质的量浓度是：A、0.2molL1 B、0.25molL1 C、0.1molL1 D、0.225molL1OCCH3COOH O12、在一定条件下，下列药物的主要成分都能发生取代反应；加成反应；水解反应；OCOHN中和反应这四种反应的是： . A、维生素 B、阿斯匹林 .CH（CH3）3OCH3CHCCH3HOONHCCH3 C、芬必得 D、扑热息痛 13、在加热情况下能和浓H2SO4反应放出刺激性气味气体，并将气体通入水中呈酸性，通入溴水或酸性KMnO4溶液中，颜色都消
13、失的物质是：A、氧化亚铁 B、二氧化锰 C、氧化铜 D、木炭粉14、a mol FeS与b mol FeO投入到V L、c molL1的硝酸溶液中充分反应，产生NO气体，所得澄清溶液成分可看作是Fe(NO3)3、H2SO4的混合液，则反应中未被还原的硝酸可能为： (a+b)63g (a+b)189g (a+b)mol (Vc)molA、 B、 C、 D、15、“可燃冰”是水与天然气相互作用形成的晶体，主要存在于冻土层和海底大陆架中，晶体中平均每46个水分子构建成8个笼，每个笼可容纳五个CH4分子或者一个游离H2O分子。若晶体中每8个笼只有6个容纳了CH4分子，另外2个笼被游离H2O填充。由此可
14、判断下列说法中正确的是：A.“可燃冰”的平均组成为CH46H2O B.“可燃冰”在常温、常压下是一种稳定物质C.高温、低压有助于可燃冰的形成 D.“可燃冰”的平均组成为CH48H2O16、1999年诺贝尔化学奖授予具有埃及和美国双重国籍的科学家艾哈迈德泽维尔，以表彰他使“运用激光技术观测化学反应时分子中原子的运动”成为可能，在他的研究中证实了光可诱发如右所示变化： 这一事实可用于解释人眼的夜视功能，有关X、Y的叙述不正确的是：A、X和Y都可发生加聚反应B.X和Y是的同系物C.X和Y中所有原子可以处于同一平面 D.X的同分异构体（有两个苯环结构）只有四种17、下列操作中，能使电离平衡H2OHOH
15、，向右移动且溶液呈酸性的是：A、向水中加入NaHSO4溶液 B.向水中加入Al2(SO4)3溶液C.向水中加入Na2CO3溶液 D.将水加热到100C，使pH618、测定阿伏加德罗常数的实验方法中有一种电解法：以石墨为电极电解CuCl2溶液，当电流为I A，通过时间为t min，阴极增重m g（设一个电子的电量为q C，铜的相对原子质量为M），则阿伏加德罗常数可表示为： This years two sessions of the National peoples Congress were held under the leadership of the party Central Comm
16、ittee to hold high the banner, to develop scientifically, to reform and innovate, and to make steady progress. Although this session of the National peoples Congress and the last session of this session of the Chinese peoples political Consultative Conference were held, they were lively and fruitful
17、. Such words as seeking progress in a steady way, reasonably anticipating, deepening reform, government responsibility, and peoples livelihood construction have become the focus of peoples attention. To sum up, the main tasks of this year are to stabilize growth, control prices, adjust structure, be
18、nefit peoples health, grasp reform and promote harmony. It is necessary to profoundly grasp the objectives, tasks, and work priorities of this years economic and social development, and earnestly unify the thinking and action with the central authorities scientific judgment of the situation. Unified to the central governments major policy-making arrangements, and the implementation of the actual work.
