2011年四川高考理科综合真题及答案.doc

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2011 年四川高考理科综合真题及答案本试题卷分第一部分（选择题）和第二部分（非选择题）两部分，考生作答时，须将答案答在答题卡上，在本试题卷、草稿纸上答题无效。满分 300 分。考试时间 150 分钟。考试结束后，将本试题卷和答题卡一并交回。可能用到的相对原子质量：H 12 16 S 32 1 C O Fe 56 理科综合生物试题解析一、选择题（本题共 13 小题，每小题 6 分。在每小题给出的四个选项中，只有一项是符合题目要求的） 1.下列关于微生物生长曲线的叙述，不正确的是 A.在相同培养条件下接种对数期的菌种，调整期将缩短 B.进入对数期的微生物代谢旺盛，形态和生理特性比较稳定 C.进入稳定期后不再产生新细胞，活细胞数目维持相对恒定 D.进入衰亡期后部分细胞解体，可释放出抗生素等代谢产物答案：C 解析：进入对数期的微生物代谢旺盛，形态和生理特性比较稳定，作菌种或科研材料；进入稳定期后，微生物仍会产生新细胞，这时出生率等于死亡率，活细胞数目保持相对稳定，因此 C 错。 2.下列有关生物膜结构和功能的描述，不正确．．．的是 A.植物原生质体的融合依赖于细胞膜的流动性 B.合成固醇类激素的分泌细胞的内质网一般不发达 C.分泌蛋白的修饰加工由内质网和高尔基体共同完成 D.生物膜之间可通过具膜小泡的转移实现膜成分的更新答案：B 解析：植物原生质体的融合依赖于细胞膜的一定的流动性；分泌蛋白的修饰加工由内质网和高尔基体共同完成；内质网与蛋白质、脂质、糖类的合成有关，因此合成固醇类激素的细胞内质网也发达。因此 B 错。 3.下列关于人在剧烈运动时生理变化过程的描述，正确的是 A.大量失钠，对细胞外液渗透压的影响大于细胞内液 B.大量乳酸进入血液，血浆由弱碱性为弱酸性 C.胰高血糖素分泌量上升，促进肝糖元和肌糖元分解 D.血液中 O2 含量下降，刺激了呼吸中枢促进呼吸运动答案：A 解析：钠对细胞外液渗透压的维持具有重要作用，钾对细胞内液渗透压维持有重要作用，因此大量失钠对细胞外液渗透压的影响大于细胞内液，A 正确。血液中有缓冲物质，血浆 PH 值保持相对稳定，因此不会变为弱酸性，B 错。胰高血糖素不能促进肌糖元分解，C 错。剧烈运动时，血液中 CO2 增加，刺激了呼吸中枢导致呼吸加强，D 错。 4.右图表示油菜种子在成熟过程中种子质量和有机物我乡在本轮隐患排查中共出动37组次，155人次进行安全隐患排查，对区域内山洪、堰渠、道路、输电线路铁塔等可能存在安全隐患的地方均进行多次安全排查project work, cadres, cadres selection and other aspects of a total of 19, further defined the direction of rectification, enhancing the pertinence and effectiveness of democratic life. the scientific Outlook on development" theme, find a project supporting strong enough, the industry well enough, urban construction management level needs to be improved, livelihood improvement needs to be strengthened, district team itself, such as the five aspects. 14 billion project, China Metallurgical group, vanke group, Guangdong hengda group, Taiwan Ruentex group, on the RIgroup, Shenzhen Kaisa, jifeng agricultural machinery, Mercedes-Benz, Audi 4S store and other large enterprises and projects have settled in Shunqing. Third, strengthen project construction. Annual implementation focus project 39 a, fixed assets investment total will breakthrough 12 billion yuan, created district yilai history high, South door dam, and five in shop old city transformation, and Ying China industrial concentrated district construction, and city main road construction, and Northeast steam Trade Center, and modern farmers industry Park, and vocational education city, and low rental, and also room construction, and features blocks build, and farmers market transformation, and "rural version" Street transformation, focus engineering speed up implementation, effectiveness obviously. Expected to be achieved this year, area-wide GDP 17 billion Below, I first District Committee member of the 20XX team annual democratic meeting implementation of the corrective measures, as well as member of the team and of my own report guidelines for the implementation of the independent Commission against corruption statement invited leaders and comrades criticism. First, annual party on the 20XX team,Member of democratic lifeaction plan implementation year 20XX, district democratic meeting a member of the team on "study and practice Year of 20XX, we find out the problems mentioned above, based on actual Shunqing construction and development, conscientiously sum up improvements, achieving significant development results and effectiveness of their work. (A) highlight the project handle, maintain high growth of investment. Adhere to the strategy as aFoundation, carrying out projects to promote increased stamina important. One is to increase the intensity of projects towards. Actively seek national and provincial policy support, superior special transfer payments, a variety of additional income will top 700 million Yuan, a number of key infrastructure projects, livelihood projects, industrial projects into the cage. Second, increasing the project attracts. This year a total of 23 signed amajor project, of which Good for this meeting, we requested the Standing Committee of the municipal party Committee, municipal Secretary General Tang Wenjin, the City Commission for discipline inspection Standing Committee Yang Xu, Jiang Jixue, Deputy Director of the personnel office, and other leading comrades present guidance allows us to warm applause for their welcome and thanks!

thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career made new progress, no necessary always hard has, no awareness to China also has many poverty area, and also has many poverty population of exists, more living improve has, more need keep hard of style. Three is not strictly honest. struggle for the ideals of communism, communist struggle for life, ready to sacrifice everything for the party and the people. Second is to continuously improve the quality and standard of political, conscientiously study Deng Xiaoping theory and "three represents" important thought and the scientific Outlook on development, implement the party's basic program for the primary stage of socialism, adhere to the correct political orientation, maintain highly consistent with the CPC Central Committee, is good at theories of socialism with Chinese characteristics to analyze and solve problems. work. First, keep in mind that the purpose of serving, adhere to assuming pow er for the people, keep in mind the people and care about people, and the joys and sorrows of the masses, ... Total thought units is a water sector,clean self-discipline away from himself too far, no real processing good living of improve and hard, and thrift excellent traditional of relationship, no effective do comply with Constitution and party of regulations must from I do up, no right mercy good bitter Le, and wealth of relationship, no right awareness to in comply with Constitution and party of regulations aspects everyone has accountability. Four, future direction and improvement measures 1, belief and faith, strengthen party spirit. One is to firmly establish the noble ideals of Third, strengthening the party spirit and the world transformation, perseverance of the party Constitution, relive Party vows to establish correct world Outlook, Outlook on life and the world, practically embodies ideals and beliefs into action, combine lofty ideals and practical activities, transforming the objective world, actively participate in the great practice of building socialism with Chinese characteristics. 2, keep the purpose in concept, changing the style of According to city discipline, and municipal organization Department requirements, today we held "implement implementation independent Commission against corruption guidelines effective strengthening led cadres style construction" topic democratic life, main task is close contact thought, and work actual, control check district Standing Committee team and the personal in implementation independent Commission against corruption guidelines Shang exists of problem, in-depth carried out criticism and self-critical, further clear rectification direction and measures, effective enhanced clean politics of consciousness and initiative, firm set good of ruling image. Before the meeting, the way we take surveys solicited a views, combed, related to team building 相对含量的变化趋势，下列相关叙述不正确．．．的是 A.大量糖类输入并参与代谢，导致种子质量不断增加 B.细胞代谢利用大量糖类，导致淀粉含量降低 C.糖类不断转化为脂质，导致脂质含量持续增加 D.糖类不转化为蛋白质，导致含氮物质含量不变答案：D 解析：蛋白质是细胞结构成分，糖类可以转化为蛋白质。含氮物质含量不变，但由于种子干重增加，因此蛋白质总量实际在增加，因此糖类在转化为蛋白质。 5.北极比目鱼中有抗冻基因，其编号的抗冻蛋白具有 11 个氨基酸的重复序列，该序列重复次数越多，抗冻能力越多，越强，下图是获取转基因抗冻番茄植株的过程示意图，有关叙述正确的是 A 过程①获取的目的基因，可用于基因工程和比目录基因组测序 B 多个抗冻基因编码去依次相连成能表达的新基因，不能得到抗冻性增强的抗冻蛋白， C 过程②构成的重组质粒缺乏标记基因，需要转入农杆菌才能进行筛选 D 应用 DNA 探针技术，可以检测转基因抗冻番茄植株中目的基因的存在及其完全表达答案：B 解析：过程 1 获得的目的基因已不含非编码区和内含子，因此不能用于比目鱼基因组测序，因此 A 错。导入农杆菌是为了扩增和更易导入蕃茄细胞，C 错。DNA 探针技术不能检测基因是否完全表达，目的基因的完全表达应该检测表达产物蛋白质，D 错。 30（21 分）回答下列 I、II 小题。 I.（9 分）有人通过实验探究某海藻饿最佳培养条件，以获得最大生物量（注：生物量指单位体积的藻体干重）。（1）在有光条件下培养海藻时，培养液中必须含有__________,还需定时向培养液中通入空气，目的是提供。海藻光合速率随着向光照强度的变化曲线如下图，图中 B 点表示最佳的________培养条件。（2）该海藻的无光条件下仍能生长，但需在培养液中添加葡萄糖等有机物，目的是提供____________。（3）向培养液中添加葡萄糖配成不同浓度的培养液，在一定光照条件下培养该海藻，测定海藻的生物量如下表：

要确定培养海藻的最佳葡萄糖浓度，还需设计_____________的实验。（4 综合上述实验，获得该海藻最大生物量的培养条件是____________。 II、（12 分）下图为反射弧中神经—肌肉接头的结构及其生理变化示意图。（1）发生反射时，神经中枢产生的兴奋沿___________神经传到突触前膜，导致突触小泡与前膜________________，释放神经递质（Ach）；Ach 与 Ach 受体结合后，肌膜发生__________，引起肌肉收缩。（2）重症肌无力是自身免疫病，其病因是患者免疫系统把 Ach 受体当作抗原，使___________ 被激活而增殖、分化、产生 Ach 受体抗体。Ach 受体抗体与 Ach 受体特异性结合，造成 Ach 不能与 Ach 受体正常结合，导致_______________信号转换过程受阻。（3）临床上治疗重症肌无力的重度患者，可采用胸腺切除法，目的是抑制_________发育成 T 细胞，不能产生淋巴因子，从而抑制___________免疫的应答。 I 答案：（1）各种必需矿质元素（1 分） CO2 （1 分）光照（1 分）（2）碳源和能源（2 分）（3）在 0.2---0.6g/L 之间更细分的浓度梯度（2 分）（4）适宜光照，添加适宜浓度的葡萄糖（2 分）解析：（1）海藻是植物，因此培养时必需在培养液中加入各种必需矿质元素。通入空气，目的是提供光合作用所需 CO2。B 点光照强度生物量最大。（2）无光条件下海藻不能进行光合作用，因此必需提供有机物作 C 源、能量来源。（3）要确定培养海藻的最佳葡萄糖浓度，还需在 0.2---0.6g/L 之间更细分的浓度梯度。（4）、根据图，获得该海藻最大生物量需光照强度适宜，据表格知需添加适宜浓度葡萄糖 II 答案：（1）传出（1 分）融合（2 分）电位变化（2 分）（2）B 细胞（1 分）化学信号向电（2 分）（3）造血干细胞（2 分）体液（2 分）

thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career made new progress, no necessary always hard has, no awareness to China also has many poverty area, and also has many poverty population of exists, more living improve has, more need keep hard of style. Three is not strictly honest. struggle for the ideals of communism, communist struggle for life, ready to sacrifice everything for the party and the people. Second is to continuously improve the quality and standard of political, conscientiously study Deng Xiaoping theory and "three represents" important thought and the scientific Outlook on development, implement the party's basic program for the primary stage of socialism, adhere to the correct political orientation, maintain highly consistent with the CPC Central Committee, is good at theories of socialism with Chinese characteristics to analyze and solve problems. work. First, keep in mind that the purpose of serving, adhere to assuming pow er for the people, keep in mind the people and care about people, and the joys and sorrows of the masses, ... Total thought units is a water sector,clean self-discipline away from himself too far, no real processing good living of improve and hard, and thrift excellent traditional of relationship, no effective do comply with Constitution and party of regulations must from I do up, no right mercy good bitter Le, and wealth of relationship, no right awareness to in comply with Constitution and party of regulations aspects everyone has accountability. Four, future direction and improvement measures 1, belief and faith, strengthen party spirit. One is to firmly establish the noble ideals of Third, strengthening the party spirit and the world transformation, perseverance of the party Constitution, relive Party vows to establish correct world Outlook, Outlook on life and the world, practically embodies ideals and beliefs into action, combine lofty ideals and practical activities, transforming the objective world, actively participate in the great practice of building socialism with Chinese characteristics. 2, keep the purpose in concept, changing the style of According to city discipline, and municipal organization Department requirements, today we held "implement implementation independent Commission against corruption guidelines effective strengthening led cadres style construction" topic democratic life, main task is close contact thought, and work actual, control check district Standing Committee team and the personal in implementation independent Commission against corruption guidelines Shang exists of problem, in-depth carried out criticism and self-critical, further clear rectification direction and measures, effective enhanced clean politics of consciousness and initiative, firm set good of ruling image. Before the meeting, the way we take surveys solicited a views, combed, related to team building 解析：（1）神经中枢产生的兴奋沿传出神经传出，导致突触小泡与突触前膜融合，从而释放递质。通过图，看出递质引起肌膜电位变化，从而发生肌肉收缩。（2）抗体是由效应 B 细胞产生的，因此使 B 细胞被激活而增殖。突触释放递质，导致肌膜电位变化，因此是化学信号→电信号转换过程受阻。（3）造血干细胞在胸腺处生成 T 细胞。根据题 2 可知是抑制体液免疫应答。 31．(21 分)回答下列Ⅰ、Ⅱ两小题。 I.（7 分）图 A 为小岛生态系统食物网简图。有人向小岛引入一定数量的卷尾鬣蜥（主要以沙氏变色蜥和较大的地面节肢动物为食），跟踪调查该生态系统及其对照组的变化，发现沙氏变色蜥和网蜘蛛的数量变化较大（见图 B），而其它生物数量变化相对较小。请回答下列问题：（1）沙氏变色蜥处于第_____________营养级，其与卷尾鬣蜥的种间关系是____________。（2）引入卷尾鬣蜥后，沙氏变色蜥的变要活动范围从树基部向上转移，而网蜘蛛的织网位置略有下降，此现象表明生态因素的改变，可使生物群落的___________发生改变。（3）引入卷尾鬣蜥后，网蜘蛛的数量变化趋势是________。结合其它生物的数量变化信息可以看出，小岛生态系统的结构和功能能够保持相对稳定，表明生态系统内部具有_______能力。 II．（14 分）小麦的染色体数为 42 条。下图表示小麦的三个纯种品系的部分染色体及基因组成：I、II 表示染色体，A 为矮杆基因，B 为抗矮黄病基因，E 为抗条斑病基因，均为显性。乙品系和丙品系由普通小麦与近缘种偃麦草杂交后，经多代选育而来（图中黑色部分是来自偃麦草的染色体片段）（1）乙、丙系在培育过程中发生了染色体的生，可为（2）甲和乙杂交所得到的 F 自交，所有染色体正常联会，则基因 A 与 a 可随提供原材料。变异。该现象如在自然条件下发的分开而分离。F 自交所得 F 中有种基因型，其中仅表现抗矮黄病的基因型有（3）甲和丙杂交所得到的 F 自交，减数分裂中Ⅰ甲与Ⅰ丙因差异较大不能正常配对，而其它染色体正常配对，可观察到种基因型的配子，配子中最多含有个四分体；该减数分裂正常完成，可生产条染色体。种。

（4）让（2）中 F 与（3）中 F 杂交，若各种配子的形成机会和可育性相等，产生的种子均发育正常，则后代植株同时表现三种性状的几率为 I 答案：（1）三或第四（1 分）竞争和捕食（1 分）。（2）垂直结构（1 分）（3）先增加，后减少，最终达到平衡。（2 分）一定的自动调节（2 分）解析：（1）据食物网，沙氏变色蜥处于第三、第四营养级。卷尾鬣蜥捕食沙氏变色蜥，同时卷尾鬣蜥与沙氏变色蜥都捕食较大的地面节肢动物，因此二者是捕食与竞争关系。（2）沙氏变色蜥向上、网蜘蛛活动区域下降，说明群落垂直结构变化了。（3）由坐标图可知，有卷尾鬣蜥跟无卷尾鬣蜥比较，网蜘蛛数量先增多，后减少。生态系统的结构和功能保持相对稳定，说明生态系统具有一定的自动调节能力。 II 答案：（1）结构（1 分）生物进化（1 分） 9（2 分） 2（2 分）（2）同源染色体（1 分）（3） 20 （1 分）（4）3/16 （2 分） 4（2 分） 22（2 分）解析：（1）观察图可知乙丙品系发生了染色休结构变异，变异能为生物进化提供原材料。（2）基因 A、a 是位于同源染色体上的等位基因，因此随同源染色体的分开而分离。甲植株无 Bb 基因，基因型可表示为：AA00，乙植株基因型为 aaBB，杂交所得 F1 基因型为 AaB0， aaB。可看作 AaBb 思考，因此所 F2 基因型有 9 种，仅表现抗矮黄病的基因型有 2 种：aaBB （3）小麦含有 42 条染色体，除去不能配对的两条，还有 40 条能两两配对，因此可观察到 20 个四分体。由于 I 甲与 I 丙不能配对，因此在减数第一次分裂时，I 甲与 I 丙可能分开，可能不分开，最后的配子中：可能含 I 甲、可能含 I 丙、可能都含、可能都不含，因此能产生四种基因型的配子。最多含有 22 条染色体。（4）（2）中 F1 的基因型:Aa B,（3）中 F1 基因型可看成：A , 考虑 B 基因后代出现抗矮黄病性状的几率为 1/2,考虑 A 和 E，后代出现矮杆、抗条斑病性状的概率为 3/8，因此同时出现三种性状的概率为 3/16。 aE 理科综合测试物理试题解析二、选择题（本题共 8 小题。在每小题给出的四个选项中，有的只有一个选项是正确的，有的有多个选项正确，全部选对的得 6 分，选对但不全的得 3 分，有选错的得 0 分） 14.气体能够充满密闭容器，说明气体分子除相互碰撞的短暂时间外 A 气体分子可以做布朗运动 B 气体分子的动能都一样大 C 相互作用力十分微弱，气体分子可以自由运动 D 相互作用力十分微弱，气体分子间的距离都一样大答案：C 解析：布朗运动是分子聚集体的运动，而不是单个分子的运动，所以 A 错误；不同气体分子速率不一定一样，B 错误；气体分子质检的距离远大于分子力的作用范围，所以可以认为相互作用力微弱，可以自由移动，但分子间的距离还是不一样的，C 对 D 错误。 15.下列说法正确的是 A 甲乙在同一明亮空间，甲从平面镜中看见乙的眼睛时，乙一定能从镜中看见甲的眼睛 B 我们能从某位置通过固定的注意透明的介质看见另一侧的所有景物

thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career made new progress, no necessary always hard has, no awareness to China also has many poverty area, and also has many poverty population of exists, more living improve has, more need keep hard of style. Three is not strictly honest. struggle for the ideals of communism, communist struggle for life, ready to sacrifice everything for the party and the people. Second is to continuously improve the quality and standard of political, conscientiously study Deng Xiaoping theory and "three represents" important thought and the scientific Outlook on development, implement the party's basic program for the primary stage of socialism, adhere to the correct political orientation, maintain highly consistent with the CPC Central Committee, is good at theories of socialism with Chinese characteristics to analyze and solve problems. work. First, keep in mind that the purpose of serving, adhere to assuming pow er for the people, keep in mind the people and care about people, and the joys and sorrows of the masses, ... Total thought units is a water sector,clean self-discipline away from himself too far, no real processing good living of improve and hard, and thrift excellent traditional of relationship, no effective do comply with Constitution and party of regulations must from I do up, no right mercy good bitter Le, and wealth of relationship, no right awareness to in comply with Constitution and party of regulations aspects everyone has accountability. Four, future direction and improvement measures 1, belief and faith, strengthen party spirit. One is to firmly establish the noble ideals of Third, strengthening the party spirit and the world transformation, perseverance of the party Constitution, relive Party vows to establish correct world Outlook, Outlook on life and the world, practically embodies ideals and beliefs into action, combine lofty ideals and practical activities, transforming the objective world, actively participate in the great practice of building socialism with Chinese characteristics. 2, keep the purpose in concept, changing the style of According to city discipline, and municipal organization Department requirements, today we held "implement implementation independent Commission against corruption guidelines effective strengthening led cadres style construction" topic democratic life, main task is close contact thought, and work actual, control check district Standing Committee team and the personal in implementation independent Commission against corruption guidelines Shang exists of problem, in-depth carried out criticism and self-critical, further clear rectification direction and measures, effective enhanced clean politics of consciousness and initiative, firm set good of ruling image. Before the meeting, the way we take surveys solicited a views, combed, related to team building C 可见光的传播速度总是大于电磁波的传播速度 D 在介质中光总是沿直线传播解析：A 由光路可逆知道 A 正确；由于存在光的全反射，所以不一定从介质看到另一侧的所有景物，B 错误；可见光也是电磁波，他它们的速度可以相等,C 错误；只有在同一均匀介质中光才能沿直线传播，D 错误。 16.如图为一列沿 x 轴负方向传播的简谐横波在 t=0 时的波形图，当 Q 点在 t=0 时的振动状态传到 P 点时，则 A.1cm＜x＜3cm 范围内的质点正在向 y 轴的负方向运动 B.Q 处的质点此时的加速度沿 y 轴的正方向 C. Q 处的质点此时正在波峰位置 D. Q 处的质点此时运动到 p 处解析：B 由波动图像可知，质点 Q 在 t=0 时刻平衡位置向上振动，所以当 Q 的状态传到 P 时，刚好经历 3/4 周期，Q 处于波谷位置，故 B 正确，CD 错误；此刻 1cm＜x＜3cm 范围内的质点均在 x 轴上面，其中 1cm＜x＜2cm 范围内质点向上运动，2cm＜x＜3cm 范围内质点向下运动，A 错误； 17.据报道，天文学家近日发现了一颗距地球 40 光年的“超级地球”，名为“55Cancri e”该行星绕母星（中心天体）运行的周期约为地球绕太阳运行周期的 1 480 ，母星的体积约为太阳的 60 倍。假设母星与太阳密度相同，“55 Cancri 地球的 e”与地球做匀速圆周运动，则“55 Cancri e”与 A.轨道半径之比约为 3 60 480 B. 轨道半径之比约为 3 60 480 2 18.氢原子从能级 m 跃迁到能级 n 时辐射红光的频率为 v1，从能级 n 跃迁到能级 k 时吸收紫光的频率为 v2，已知普朗克常量为 h，若氢原子从能级 k 跃迁到能级 m，则 A. 吸收光子的能量为 hv1 + hv2 C. 吸收光子的能量为 hv1 - hv2 解析：D 由题意可能级 K 处于较高激发态，能级 m 处于较低激发态，而能级 n 处于最低能量状态。所以从能级 k 跃迁到能级 m 时候辐射出光子，能量为 hv2 – hv1 B. 辐射光子的能量为 hv1 + hv2 D. 辐射光子的能量为 hv2 – hv1 19.如图是“神舟”系列航天飞船返回舱返回地面的示意图，假定其过程可简化为：打开降落伞一段时间后，整个装置匀速下降，为确保安全着陆，需点燃返回舱的缓冲火箭，在火箭喷气过程中返回舱做减速直线运动，则

A.火箭开始喷气瞬间伞绳对返回舱的拉力变小 B.返回舱在喷气过程中减速的主要原因是空气阻力 C 返回舱在喷气过程中所受合外力可能做正功 20.如图所示，在匀强磁场中匀速转动的矩形线圈的周期为 T,转轴 O1O2 垂直于磁场方向，线圈电阻为 2  。从线圈平面与磁场方向平行时开始计时，线圈转过 60°时的感应电流为 1A。那么 A.线圈消耗的电功率为 4W B.线圈中感应电流的有效值为 2A C.任意时刻线圈中的感应电动势为 e = 4cos 2 t  T sin 2 t D. 任意时刻穿过线圈的磁通量为  = T  T  解析：AC 从图示位置开始计时时，电动势瞬时值满足 e NBS COS 由题意知道，转过 60°时的电动势为 2v,所以电动势最大值为 4V，C 选项正确；电流最大值 NBS COS t       ，为 2A，所以有效值为 2 A，B 错误；P=I2R=4W，A 选项正确； e NBS COS  知道 2  BS 2   T COS 60 0   max  T  ,所以任意时刻的磁通量  = 2T  sin 2 t  T 21．质量为 m 的带正电小球由空中 A 点无初速度自由下落，在 t 秒末加上竖直向上、范围足够大的匀强电场，再经过 t 秒小球又回到 A 点。不计空气阻力且小球从末落地，则 A.整个过程中小球电势能变换了 3 2 mg2t2 B.整个过程中小球动量增量的大小为 2mgt C.从加电场开始到小球运动到最低点时小球动能变化了 mg2t2 D.从 A 点到最低点小球重力势能变化了 2 3 mg2t2

thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career made new progress, no necessary always hard has, no awareness to China also has many poverty area, and also has many poverty population of exists, more living improve has, more need keep hard of style. Three is not strictly honest. struggle for the ideals of communism, communist struggle for life, ready to sacrifice everything for the party and the people. Second is to continuously improve the quality and standard of political, conscientiously study Deng Xiaoping theory and "three represents" important thought and the scientific Outlook on development, implement the party's basic program for the primary stage of socialism, adhere to the correct political orientation, maintain highly consistent with the CPC Central Committee, is good at theories of socialism with Chinese characteristics to analyze and solve problems. work. First, keep in mind that the purpose of serving, adhere to assuming pow er for the people, keep in mind the people and care about people, and the joys and sorrows of the masses, ... Total thought units is a water sector,clean self-discipline away from himself too far, no real processing good living of improve and hard, and thrift excellent traditional of relationship, no effective do comply with Constitution and party of regulations must from I do up, no right mercy good bitter Le, and wealth of relationship, no right awareness to in comply with Constitution and party of regulations aspects everyone has accountability. Four, future direction and improvement measures 1, belief and faith, strengthen party spirit. One is to firmly establish the noble ideals of Third, strengthening the party spirit and the world transformation, perseverance of the party Constitution, relive Party vows to establish correct world Outlook, Outlook on life and the world, practically embodies ideals and beliefs into action, combine lofty ideals and practical activities, transforming the objective world, actively participate in the great practice of building socialism with Chinese characteristics. 2, keep the purpose in concept, changing the style of According to city discipline, and municipal organization Department requirements, today we held "implement implementation independent Commission against corruption guidelines effective strengthening led cadres style construction" topic democratic life, main task is close contact thought, and work actual, control check district Standing Committee team and the personal in implementation independent Commission against corruption guidelines Shang exists of problem, in-depth carried out criticism and self-critical, further clear rectification direction and measures, effective enhanced clean politics of consciousness and initiative, firm set good of ruling image. Before the meeting, the way we take surveys solicited a views, combed, related to team building 1.答题前，考生先在答题卡上用直径 0.5 毫米的黑色墨水签字笔将自己的姓名，准考证号填写清楚，然后贴好条形码。请认真核准条形码上的准考证号，姓名和科目。 2.第Ⅱ卷共 8 页，请用直径 0.5 毫米黑色墨水签字笔在答题卡上各题的答题区域内作答，在试卷．．．上作答无效．．．．． 3.第Ⅱ卷共 13 题，共 174 分。 22（17 分）（1）（7 分）某研究性学习小组进行了如下实验：如图所示，在一端封闭的光滑细玻璃管中注满清水，水中放一个红蜡做成的小圆柱体 R。将玻璃管的开口端用胶塞塞紧后竖直倒置且与 Y 轴重合，在 R 从坐标原点以速度 v 0 =3cm/s 匀速上浮的同时，玻璃管沿 x 轴正方向做初速为零的匀加速直线运动。同学们测出某时刻 R 的坐标为（4，6）,此时 R 的速度大小为。（R 视为质点） Cm/s，R 在上升过程中运动轨迹的示意图是解析：运动时间 t v  4 / cm s   ，所以水平方向平均速度为 2 s 6 3 v  4 2  2 / cm s ，瞬时速度为，由速度合成知此刻 R 的速度大小为 5cm/s,由曲线运动条件知道 D 正确。（2）（10 分）为测量一电源的电动势及内阻 ①在下列三个电压表中选一个改装成量程为 9V 的电压表 A．量程为 1V、内阻大约为 1K  的电压○V1

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