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累的进程。同时与外国交流终止,使江户时期的日本文化失掉了开阔与雄伟的精神。这就使本来已经落后的日本,进一步被资本主义的西方抛在后面。(2)锁国政策巩固了幕藩封建体制,当这一体制逐渐成为社会经济发展的障碍时,锁国政策的反动作用也就更加明显了。 (13分)中国政府历来重视发展与周边国家的睦邻友好关系,为地区和世界和平作出了巨大贡献。阅读下列材料:材料一印度继承英国在西藏的特权,经营西藏的邮政、电报、电话,并在西藏设有12个驿站,在亚东和江孜等交通要地驻有印度军队。西藏解放后中国政府对印度的这些特权,原则上坚决主张废除,而在做法上采取了适当的步骤。对于不损害中国主权而合乎西藏实际需要的惯例,则在平等互惠基础上暂允许其保留。——谢益显《中国外交史》材料二中印两国之间的问题并不是很大……无非就是一个边界问题。……即使一时解决不了,可以先放一放,在贸易、经济、文化等各个领域还可以做很多事情,发展往来,增进了解和友谊,双方合作仍然有广阔的前景。……我还设想,有些国际上的领土争端,可以先不谈主权,先进行共同开发。这样的问题,要从尊重现实出发,找条新的路子来解决。——《邓小平文选》第三卷材料三十一届三中全会后,我们党摆脱了“左“的思想束缚,邓小平同志又总结历史 澳门皇冠线上投注网,正视现实, 博e佰娱乐 对国际形势和时代特征作出科学判断,提出和平与发展是当今世界的主题。这一论断……精辟地揭示了当今时代特征的本质,深刻地反映了当今国际关系的基本内容,正确阐明了我国所处的国家大环境。——戴秉国《邓小平外交思想与新时期中国共产党对外工作的历史性调整与开拓》请回答:(1)据材料一并结合所学知识,为改善与印度的关系,中国政府采取了哪些措施?(2分)(2)关于中印问题,材料二中的邓小平提出了怎样的外交新思维?据材料三说明原因。(4分)(3)据材料三并结合所学知识,新时期中国政府为适应国际形势的变化开展的外交活动具有哪些特点?试分别举例说明。(4分)(4)综合上述材料,谈谈你对新中国外交准则的基本认识。(3分)(13分)(1)措施:对于印度在西藏的特权原则上反对,具体做法上允许保留部分,适当让步;1953年提出和平共处五项原则。(2分)(2)新思维:搁置争议、共同开发。(2分)原因:改革开放和经济建设的需要;和平与发展是当今世界的主题。(2分)(3)特点及举例:①开展以联合国为中心的外交活动:如参加联合国维和行动等。②积极参与地区性国际组织的外交活动:如在上海成功举办亚太经合组织非正式领导人会议。③发展与周边国家的睦邻友好关系:如主导建立上海合作组织等。(特点、举例各1分,答出其中任意两点即可得分)(4分)(4)认识:坚持独立自主的和平外交方针;维护世界和平;保障国家利益。(其它言之有理者,酌情给分。)(3分)江苏省苏中三市2012届高三3月第一次调研测试(历史) 欢迎来到乐乐题库,查看习题“(13分)斯密指出:每个人都力图利用好他的资本,使其产生并实现最大的价值。一般说来,他并不企图增进公共福利,也不知道他实际上所增进的公共福利是多少。他所追求的仅仅是他个人的利益和所得。他对自身利益的研究必然会引导他选定最有利于社会的用途。在这样的场合,像在其他场合一样,他受一只“看不见的手”的指导,去尽力达到一个并非他本意想要达到的目的。通过追逐个人利益,他经常增进社会利益,其效果比他真的想促成社会利益时反而更好。根据材料回答:(1)斯密说的“看不见的手”是什么?(5分)(2)如何评价斯密上述观点?(8分) ”的答案、考点梳理,并查找与习题“(13分)斯密指出:每个人都力图利用好他的资本,使其产生并实现最大的价值。一般说来,他并不企图增进公共福利,也不知道他实际上所增进的公共福利是多少。他所追求的仅仅是他个人的利益和所得。他对自身利益的研究必然会引导他选定最有利于社会的用途。在这样的场合,像在其他场合一样,他受一只“看不见的手”的指导,去尽力达到一个并非他本意想要达到的目的。通过追逐个人利益,他经常增进社会利益,其效果比他真的想促成社会利益时反而更好。根据材料回答:(1)斯密说的“看不见的手”是什么?(5分)(2)如何评价斯密上述观点?(8分) ”相似的习题。 用控制变量法研究电阻大小的影响因素:
使用控制变量法的一般步骤是:
(1)明确研究的问题中有多少个物理量,搞清研究对象是哪个物理量。
(2)逐一研究这个物理量(研究对象)跟某一物理量的单一关系时,要使其他物理量保持不变。
(3)把这些单一关系综合起来。
例如:在“研究电阻的大小与什么因素有关”时,就用到了控制变量法。因为影响电阻大小的因素有四个,即材料、长度、横截面积和温度。如要研究材料对电阻的影响,则需控制其他三个因素不变。
例:在探究“导体的电阻跟哪些因素有关”的问题时,某老师引导学生作了如下的猜想:
猜想1:导体的电阻可能跟导体的横截面积有关;
猜想2:导体的电阻可能跟导体的长度有关;
猜想3:导体的电阻可能跟导体的材料有关。
如图所示是他们进行实验探究时所用的器材,演示板上固定了四条金属电阻丝,a、b、c的长度均是lm, d的长度是0.5m;a、b的横截面积相同,材料不同;a、c 的材料相同,但c的横截面积大于a的横截面积;a、d 的材料和横截面积都相同。
(1)在探究电阻跟横截面积的关系时,可依次把 M、N跟____的两端连接,闭合开关,记下电流表的示数。分析比较这两根金属电阻丝的电阻大小。
(2)依次把M、N跟a、d的两端连接,闭合开关,记下电流表示数,分析比较a、d两根金属电阻丝的电阻大小,可探究电阻跟____的关系,其结论是: __________.
(3)以上方法在研究物理问题时经常被用到,被称为控制变量法。试根据学过的物理知识再列出两例可用这种方法研究的问题:___、____。
(4)一般来说,所有物体都有电阻。在探究过程中,又有同学提出猜想4:电阻还可能跟温度有关。请用一个废灯泡的灯芯(如图所示)设计一个实验来研究这个问题,要求:①说出方法,②画出电路图。
解析:本实验探究过程中采用控制变量法,通过研究电阻与材料、长度、横截面积和温度的关系,得出电阻的大小与这些影响因素之间的关系。
答案:(1)a、c
(2)长度在导体材料和横截面积相同时,导体越长,电阻越大(或导体的电阻跟长度成正比等)
(3)研究电流与电压和电阻的关系研究压强与压力和受力面积的关系
(4)①方法:用导线把废灯泡灯芯和电源、开关、电流表连成如图所示的电路, 武松娱乐 再用酒精灯给灯芯加热,同时观察电流表示数的变化,并进行分析,得出结论;
②电路图:如图所示。
(2013南京)阅读理解
Imagine the situation. You are driving along a desert or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car breaks down. It is night and it is cold. You have no mobile phone. What do you do Well, next time take a GPS with you. This invention may be able to help you. It is a device(装置) which uses satellites (卫星) to find the user’s position(位置). It can find your position to within 20 metres. A GPS cannot start your car, but at least you will know where you are.
GPS, which means Global Positioning System, is a small radio receiver. It looks like a mobile phone. You can hold it in your hand, or put in your pocket. It is sometimes put into a watch or a telephone. We also find GPS devices in cars, planes, or boats. Some of these devices have electronic maps, so you know where you are. For example, in a city they can tell you the name of the street.
There are three parts to the Global Positioning System. The first part is the receiver. You can hold it in your hand, or have it fixed into your car, plane, etc. The second part is a group of satellites orbiting the Earth. The receiver contacts at least four of the satellites and calculates(计算) its position. The third part of the system is a network of ground stations. They are all over the world. They control the satellites and make sure they are working well.
Some people think that in the future the GPS will be as common as the mobile. They are becoming cheaper and more and more accurate(精确的). There are also new uses for the GPS. Perhaps they will become like watches. Everyone will have one and you will never be lost again.
41.According to the passage, with the help of the GPS, people __________.
can’t be lost in a new city
can’t find their way in different countries
can learn about the culture of an unknown place
can spend the least time getting to another place
42.We can learn from the passage that ____________.
there are three parts to the GPS
a GPS can’t be put into a watch
a GPS can help you start your car
the GPS are becoming more and more expensive
43.The underlined word “They” in paragraph 3 means “____________”.
A. Receivers B. GPS devices C. Satellites D. Ground stations
44.The passage is mainly about _______________.
A. the history of the GPS B. the introduction of the GPS
C. the shape of the GPS D. the three parts of the GPS
45.What can we infer(推断) from the passage
A.All GPS devices have electronic maps.
B.People in many countries will use the GPS for free.
C.The receiver of the GPS contacts at least five of the satellites.
D.The GPS will become more and more common in everyday life.
解答:解:(1)根据流程图操作1和操作2都是不溶性固体和液体的分离,因此是过滤操作,过滤时玻璃棒起到引流的作用;
(2)因为废旧干电池填料的主要难溶性物质为二氧化锰、炭粉,因此溶解过滤后的滤渣含有二氧化锰和碳粉,而回收二氧化锰,因此通过灼烧可以把碳粉变成二氧化碳,因此灼烧滤渣 l 的目的是除去碳粉;
(3)因为氯化铵和氯化锌的浓度相近,在某温度下蒸发滤液 1 时,大量的氯化铵晶体先析出,说明该温度下氯化铵溶解度<氯化锌的溶解度;
(4)①用锌和稀硫酸制取氢气,因此发生装置属于固液常温型的B装置;因为氢气密度比空气小且难溶于水,因此可以采用排水法或向下排空气法收集;
②若通过E装置采用排水发生收集氢气,氢气不易溶于水,因此会聚集在水的上方,因此进气管是短管;
要量取收集的氢气的体积,利用仪器F-量筒通过量取排出水的体积就是氢气的体积测定;
(5)①实验 a 和实验 b,相同点是同体积同浓度的稀硫酸,不同点是含杂质的锌和纯锌,结果含杂质的锌比纯锌反应速率要快;
②要研究硫酸浓度对反应快慢的影响,需要不同浓度的硫酸,而要控制锌的纯度相同,比较产生氢气的快慢,因此对比组是a和c;
③控制变量法需要考虑的是自变量和因变量,而其它外界条件均保存相同,因此控制其他条件相同,需控制的条件如;温度(或锌粒形状大小).
故答案为:(1)过滤;引流;(2)除去碳粉;(3)<;(4)①B,D; ②b,量筒;
(5)①与同体积同浓度的稀硫酸反应,含杂质的锌比纯锌反应速率要快;②a和c; ③温度(或锌粒形状大小). (2013毕节)阅读理解
As a volunteer teacher, I traveled a long way to a small village school in Longzhou, Guangxi. On my way there, I thought about the village, the school, and the children there. However, I felt sad when I arrived there. It wasn't what I expected. It didn't look like a school at all! The school had only three rooms, one for Grades 1, 2 and 3, and another one for Grades 4, 5 and 6. There was a third one for me.
The children welcomed me warmly on my first day. They asked me a lot of questions, and I told them stories about myself and my life in Shanghai. The next day, I gave them a test to find out their level. Though the test was very easy, over half of the students failed it, yet they all wanted to learn new things. I knew they needed me.
I was busy preparing lessons, reading test papers every night. I enjoyed teaching these lovely and hardworking children, and I could see that they were making progress with my help. I have also learned a lot from them. I understand their lives better, and we are now good friends.
I have worked in Longzhou for a year now. I’m very happy, and the experience has been very useful for me. I love the small village school and the children. In fact, I would like to continue working here.
41. From the first paragraph, we know the school is very _________.
A. beautiful B. big C. interesting D. small
42. There are _________ grades in the school.
A. 2 B. 4 C. 5 D. 6
43. The writer came from _________.
A. Longzhou B. Guangxi C. Shanghai D. Beijing
44. What does the writer think of working in the school?
A. Very interesting &