英语高考单项选择 真题部分-2004年浙江省 21. The winner of 1990 was extremely bad. _____ most people say it was the worst winter of their lives. A. At last B.In fact C.In a word D.As a result 22. The Wilsons live in _____ A-shaped house near the coast. It is _____ 17th century cottage. A. the , / B. an, the C. /, the D. an, a 23. The discussion ____ alive when an interesting topic was brought in. A. was coming B. had come C. has come D. came 24. ______ students are required to take part in the boat race. A. Ten strong young Chinese B. Ten Chinese strong young C. Chinese ten young strong D. Young strong ten Chinese 25. We wanted to get home before dark, but it didn’t quite _____ as planned. A. make out B. turn out C. go on D. come up 26. I ____ pay Tracy a visit, but I am not sure whether I will have time this Sunday. A. should B. might C. would D. could 27. ---- What do you want to do next? We have half an hour until the basketball game. ----- _____. Whatever you want to do is fine with me. A. It just depends B. It’s up to you C. All right D. Glad to hear that 28. --- Brad was Jane’s brother! ---_______ he reminded me so much of Jane! A. No doubt B. Above all C. No wonder D. Of course 29. Linda worked for the Minnesota Manufacturing and Mining Company, ____ as 3M. A. knowing B. known C. being known D. to be known 30. If you are feeling so tired, perhaps a little sleep would _____. A. act B. help C. serve D. last 31. _____ modeling business is by no means easy to get into, the good model will always be in demand. A. While B. Since C. As D. If 32. I’ve never seen anyone run so fast---- ______ David go. A. just watch B. just to watch C. just watching D. just having watched 33. We had three sets of garden tools and we seemed to have no use for ______. A. none B. either C. any D. each 34. Because the shop _____, all the T-shirts are sold at half price. A. has closed down B. closed down C. is closing down D. had closed down 35. A nyway, that evening, ____ I’ll tell you more about later, I ended up staying at Rachel’s place. A. when B. where C. what D. Which
北京市顺义区2019届高三物理一模试题（含解析） 一、选择题：本部分共16小题，每小题3分，共48分．在每小题列出的四个选项中，选出最符合题目要求的一项． 1.一频闪仪每隔0.04s 发出一次短暂的强烈闪光，照亮运动的小球，经过一段时间，通过照相机可在照相胶片上记录小球在几个闪光时刻的位置。下图是小球从A 点运动到B 点的频闪照片示意图。由图可判断，小球在此运动过程中（ ） A. 速度越来越小 B. 速度越来越大 C. 受到的合力为零 D. 加速度的方向由A 点指向B 点 【答案】A 【解析】 试题分析：AB 、由图可知图像间距越来越小，每两个位置的 时间间隔相等，由x v t 可知小球的速度越来越小，A 正确B 错误 CD 、由题意可知小球从A 到B 加速运动，加速度方向由B 向A ，所以合外力方向由B 向A ；错误 故选A 考点：牛顿第二定律 点评：本题可用分析纸带的方法分析小球的运动，注意加速度和速度方向的关系。 2.图中给出了四个电场的电场线，则每一幅图中在M 、N 处电场强度相同的是（ ） A.
B. C. D. 【答案】C 【解析】 试题分析：因电场线的疏密表示场强的大小，电场线的方向表示场强的方向，由图可知，只有C图中MN两点的电场线疏密程度相同，故MN两点电场强度相同的点只有C． 考点：考查了对电场线的认识 点评：电场线的方向表示场强的方向，电场线的疏密表示场强的大小． 3.2013年6月，我国宇航员在天宫一号空间站中进行我国首次太空授课活动，展示了许多在地面上无法实现的实验现象．假如要在空间站再次进行授课活动，下列我们曾在实验室中进行的实验，若移到空间站也能够实现操作的有（） A. 利用托盘天平测质量 B. 利用弹簧测力计测拉力 C. 利用自由落体验证机械能守恒定律 D. 测定单摆做简谐运动的周期 【答案】B 【解析】 试题分析：天宫一号空间站围绕地球做匀速圆周运动，所受到的万有引力充当了向心力，天宫一号空间站中的物体均处在完全失重状态，所以靠重力作用的实验均不能成功，故只有B 选项正确。
上师大附中2020 学年度第一学期高三期中考试 英语 考生注意： 1. 考试时间120 分钟，试卷满分140 分。 2. 本考试设试卷和答题纸两部分。所有答題必须涂（选择题）或写（非选择题）在答题纸上，做在试卷上一律不得分。 3. 答題前，务必在答題纸上填写准考证号和姓名。 I. Listening Comprehension Section A Directions: In Section A, you will hear ten short conversations between two speakers. At the end of each conversation, a question will be asked about what was said. The conversations and the questions will be spoken only once. After you hear a conversation and the question about it, read the four possible answers on your paper, and decide which one is the best answer to the question you have heard. 1. A. 7:00 a.m..B. 7:30 a.m..C. 8:00 a.m..D. 8:30 a.m.. 2. A. Parent and child. B. Husband and wife. C. Teacher and student. D. Shop assistant and customer. 3. A. See a doctor about her strained shoulder. B. Use a ladder to help her reach the tea. C. Replace the cupboard with a new one. D. Place the tea on a lower shelf next time. 4. A. At Mary Johnson’s. B. In an exhibition hall. C. At a painter’s studio. D. Outside an a rt gallery. 5. A. He helped Doris build up the furniture. B. Doris helped him arrange the furniture. C. Doris fixed up some of the bookshelves. D. He was good at assembling bookshelves. 6. A. Blue. B. Red. C. Black. D. Green 7. A. He doesn’t get on with the others. B. He has been taken for a fool. C. He doesn’t feel at ease in the firm. D. He has found a better position. 8. A. They’d better not go riding. B. It is not good riding in the rain. C. They can go riding half an hour later. D. Riding a bike is a great idea. 9. A. The man has to get rid of the used furniture. B. The man’s apartment is ready for rent.
成都外国语学校2019届高三“一诊”模拟考试 理科综合物理测试 14．物理学的发展极大地丰富了人类对物质世界的认识，推动了科学技术的创新和革命，促进了人类文明的进步，关于物理学中运动与力的发展过程和研究方法的认识，下列说法中正确的是（） A．亚里士多德首先提出了惯性的概念 B．伽利略对自由落体运动的研究方法的核心是：把实验和逻辑推理（包括数学演算）结合起来，从而发展了人类的科学思维方式和科学研究方法 C．牛顿提出了行星运动的三大定律 D．力的单位“N”是基本单位，加速度的单位“m/s2”是导出单位 15．关于物体的运动，不可能发生的是（） A．加速度大小逐渐减小，速度也逐渐减小 B．加速度方向不变，而速度方向改变 C．加速度和速度都在变化，加速度最大时，速度最小 D．加速度为零时，速度的变化率最大 16．“好奇号”火星探测器发现了火星存在微生物的更多线索，进一步激发了人类探测火星的热情。如果引力常量G己知，不考虑星球的自转，则下列关于火星探测的说法正确的是（） A．火星探测器贴近火星表面做匀速圆周运动时，其所受合外力为零 B．若火星半径约为地球半径的一半，质量约为地球质量的十分之一，则火星表面的重力加速度一定大于地球表面的重力加速度 C．火星探测器贴近火星表面做匀速圆周运动时，如果测得探测器的运行周期与火星半径，则可以计算火星质量 D．火星探测器沿不同的圆轨道绕火星运动时，轨道半径越大绕行周期越 小
17．如图所示，小球A 、B 通过一条细绳跨过定滑轮连接，它们都穿在一根竖直杆上．当两球平衡时，连接两球的细绳与水平方向的分别为θ和2θ．假设装置中的各处摩擦均不计，则A 、B 球的质量之比为（ ） A ．2cos θ：1 B ．1：2cos θ C ．tan θ：1 D ．1：2sin θ 18．在平面直角坐标系的x 轴上关于原点O 对称的P 、Q 两点各放一个等量点电荷后，x 轴上各点电场强度E 随坐标x 的变化曲线如图所示，规定沿x 轴正向为场强的正方向，则关于这两个点电荷所激发电场的有关描述中正确的有（ ） A ．将一个正检验电荷从P 点沿x 轴移向Q 点的过程中电场力一直做正功 B ．x 轴上从P 点到Q 点的电势先升高后降低 C ．若将一个正检验电荷从两点电荷连线的垂直平分线上的一侧移至另一侧对称点的过程中一定是电场力先做正功后做负功 D ．若将一个正检验电荷从两点电荷连线的垂直平分线上的一侧移至另一侧对称点的过程中受到的电场力可能先减小后增大 19．如图所示，电源电动势E =9V ，内电阻r =4.5Ω，变阻器R 1的最大电阻 R m =5.0Ω，R 2=1.5Ω，R 3=R 4=1000Ω，平行板电容器C 的两金属板水平放置,在开关S 与a 接触且当电路稳定时，电源恰好有最大的输出功率，在平板电容器正中央引入一带电微粒，也恰能静止,那么（ ） A ．在题设条件下，R 1接入电路的阻值为3Ω，电源的输出功率为4.5W B ．引入的微粒带负电，当开关与a 断开但未与b 接触时，微粒将向下运动 C ．在题设条件下，R 1的阻值增大时，R 2两端的电压增大 D ．在题设条件下，当开关接向b 后，流过R 3的电流方向为d →c 20．静电场方向平行于x 轴，其电势φ随x 的分布可简化为如图所示的折线．一质量为m 、带电量为＋q 的粒子（不计重力），以初速度v 0从O 点（x ＝0）进入电场，沿x 轴正方向运动．下列叙述正确的是（ ） A ．粒子从x 1运动到x 3的过程中，电势能先减小后增大
2019-2020学年第一学期上大附中高一英语 9月周日小测 Ⅰ. Grammar Directions: After reading the passage below, fill in the blanks to make the passages coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank. Last August Susan and forty-two other students got wet and dirty while removing six tons of garbage __21__ the rive running across their city. They cleaned up the rive as part of a week-long environmental camp. Like one in three American rives, this river is so polluted __22__ it’s not safe for swimming or fishing. Still, Susan, who __23__ (complete) her third summer camp so far on the river cleanup, sees a change in this river. “Since we started three years ago, the river is getting a lot __24__ (clean).” she says. Environmental scientists praise the teenagers for removing garbage __25__ can harm wild life. Water birds, for example, __26__ die of plastic bottle rings and get cut by tiny metals. Three years ago, __27__ the cleanup started, garbage was everywhere. But this year the teenagers can row their boats fast. By the end of this year’s six-hour cleanup, they __28__ (remove) enough garbage to fill more than two large trucks. “__29__ (see) all that garbage in the rive makes people begin to care about environmental issues,” Susan says. She hopes that when others read that, she and her peers care enough __30__ (clean) it up, maybe they would think twice before they throw garbage into the river. Ⅱ. Vocabulary Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need. 1 / 10
高三物理试卷 第 1 页 共 4 页 广元市高2019届第一次高考适应性统考 理科综合能力测试·物理 理科综合考试时间共150分钟,满分300分,其中物理110分,化学100分,生物90分. 物理试卷分为第I 卷(选择题)和第II 卷(非选择题).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. 第I 卷(选择题 共126分) 二、本大题共8小题,每小题6分.在每小题给出的四个选项中,第14~18题只有一项符合题目要求,第19~21题有多项符合题目要求.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.如图所示,物体沿曲线轨迹的箭头方向运动,沿AB 、ABC 、ABCD 、ABCDE 四段轨迹运动所用的时间分别是1s 、2s 、3s 、4s.图中方格的边长均为1m.下列说法不． 正确．．的是 A.物体在AB 段的平均速度大小为 1 m/s B.物体在ABC 段的平均速度大小为2 5m/s C.AB 段的平均速度比ABC 段的平均速度更能反映物体处于A 点时的瞬时速度 D.物体在B 点时的速度大小等于物体在ABC 段的平均速度大小 15.火车转弯可近似看成做匀速圆周运动,当提高火车速度时会使轨道的外轨受损.为解决火车高速转弯时外轨受损这一难题,你认为以下措施可行的是 A.减小内、外轨的高度差 B.增大弯道半径 C.减小火车的质量 D.减小弯道半径 16.质量相等的甲、乙两物体从离地面相同高度处同时由静止开始下落,运动中 两物体所受阻力的特点不同,其v －t 图象如图所示.则下列判断正确的是 A.t 0时刻甲物体的加速度大于乙物体的加速度 B.t 0时刻甲、乙两物体所受阻力相同 C.0～t 0时间内,甲、乙两物体重力势能的变化量相同 D.0～t 0时间内,甲物体克服阻力做的功较多 17.交管部门在公路旁悬挂许多交通法规提醒牌,如“严禁超载、超速、酒后与疲 劳驾车”等.小明同学根据所学物理知识解释其中的原理.假设汽车质量为m 、行驶速度为v ,驾驶员的反应时间为?t ,地面对汽车的阻力与车重成正比,设比例系数为k ,重力加速度为g ,制动时的附加阻力为F ,他推导出汽车的刹车距离S (反应时间和制动时间内的总距离)的表达式,你认为正确的是 A .S ＝v ·?t B.F m v S 22 = C.)(22kmg F mv t v S ++??= D.) (22 kmg F mv t v S -+??= 18.如图所示,一长轴为2L 的椭圆形薄板绝缘材料边缘上均匀分布着电荷量为+Q 的电荷,沿长轴 AB
2018-2019学年上师大附中高三下 英语三月月考 Ⅱ. Grammar and Vocabulary Section A Directions：After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank. Smart phones were once the best thing to happen to the tech industry. In the 11 years since the iPhone made its debut, smart phones ____1____（include）just about every other gadget. And it is surprising that it ____2____ alter every business. But ____3____ smart phones have achieved dominance, revolution is again in the air. At Google’s and Apple’s recent develop er conference, executives took the stage to show how much more irresistible they were making our phones. Then each company unveiled the software ____4____（help）you use your phone a lot less. There’s reason for this seemingly contradictory engineering effort, and it’s ____5____ I call“Peak Screen”．For much of the last decade, a technology industry ____6____（rule）by smart phones has pursued a singular goal of completely ____7____（conquer）our eyes. Tech has now captured pretty much all visual capacity. Americ ans spend three to four hours a day looking at their phones, and that’s the minimum estimaton. So tech giants are to build the beginning of something new: a ____8____（visual）tech world, a digital landscape ____9____ relies on voice assistants, headphones, watches and other wearables to take some pressure off our eyes. We may simply end up adding new devices to our screen-addled lives, ____10____ it could change everything again. As I argued, in many ways screens have become to dominant in our lives. The sooner we find something else, the better. 【答案】 1. have included 2. should 3. even if 4. to help 5. what 6. ruled 7. conquering
2019年青岛市高三年级教学质量检测理科综合能力测试 二、选择题： 1.春节期间非常火爆的电影《流浪地球》讲述了若干年后太阳内部氢转氦的速度加快，形成“氦闪”产生巨大的能量会使地球融化，核反应方程为2 3 4 112H H He X +→+。人类为了生存，通过给地球加速使其逃离太阳系，最终到达4.25光年外的比邻星系的某轨道绕比邻星做匀速圆周运动，引力常量为G ，根据以上信息下列说法正确的是 A. 核反应方程式中的X 为正电子 B. 地球要脱离太阳系需加速到第二宇宙速度 C. 若已知地球在比邻星系内的轨道半径和环绕周期，则可确定出比邻星的密度 D. 若已知地球在比邻星系内的轨道半径和环绕周期，则可确定出比邻星的质量 【答案】D 【解析】 【详解】A ．根据核反应的电荷数及质量数守恒可知，X 的电荷数为0，质量数为1，即为中子，故A 错误； B ．根据宇宙的三个速度定义可知，地球脱离太阳系需加速到第三宇宙速度，故B 错误； CD ．根据万有引力与向心力的公式可得2 22Mm G m r r T π??= ??? ，解得2324r M GT π=，即可求解比邻星系的质 量，但是不知道比邻星系的半径，所以不可以算出密度，故C 错误，D 正确。 2.一个质量m=2kg 的物体受四个力的作用处于平衡状态。当其中一个F=10N 的作用力突然消失，其余三个力保持不变。经过时间t=1s 后，下列说法正确的是 A. 物体一定做直线运动 B. 物体的速度一定是5m ／s C. 物体速度的变化量一定等于5m ／s D. 物体的动能一定增加了25J 【答案】C 【解析】 【详解】A ．当F=10N 的力消失后，其它力的合力与消失的这个力大小相等，方向相反，若物体原来做匀速直线运动，且速度方向与F 的方向不在一条直线上，则物体做曲线运动，故A 错误；
考查语法句子中文翻译 定语从句 1.上班时间打盹的那个员工应该为此 事故负责。（blame）（浦外高三上开学 考） 2.养狗的居民常被告诫要看管 好他们的宠物，以防发生意外伤人情 况。(in case)（上师大附中高三开学考） 3. 学生表达自我的能力越强，他们就 越可能在入学面试中脱颖而出，这促使 了他们将练习演讲作为每日常规。 (rule)（2019届建平高三上期中）1.The worker who took a nap during the working hours is to blame for the accident. 2.Residents who raise dogs are often warned to take good care of their pets in case they should hurt people by accident. The stronger the students’ abilities to express themselves are, the more likely they are to stand out in the college admission interview, which encourages them to make it a rule to practise speaking every day. 名词性从 1.没有孩子在成长过程中不犯任何错 误，关键在于能否吃一堑，长一智。 (learn)（上中高三9月摸底考） 3.众所周知，学习方法因人而异， 适合你的不一定适合我。1.No children make no mistake while they are growing up and the most important thing is whether they can learn from (the) mistakes. As is known to all, learning methods vary from person to person, so what is suitable for you doesn’t necessarily 1
2018-2019学年第一学期高三物理教学质量检测试卷 物理试题 （满分100分答题时间60分钟） 一、选择题（每小题4个选项中只有1个正确选项，每题4分，共40分） 1．静电力恒量k的单位是（） （A）N·m2/kg2（B）N·m2/C2 （C）kg2/（N·m2）（D）C2/（N·m2） 2．物理学中，力的合成、力的分解、平均速度这三者所体现的共同的科学思维方法是（）（A）比值定义（B）控制变量 （C）等效替代（D）理想模型 3．如图所示，一定质量的气体，从状态I变化到状态II，其p-1/V 图像为过O点的倾斜直线，下述正确的是（） （A）密度不变（B）压强不变 （C）体积不变（D）温度不变 4．如图为某质点的振动图像，下列判断正确的是（） （A）质点的振幅为10cm （B）质点的周期为4s 1/V
（C ）t ＝4s 时质点的速度为0 （D ）t ＝7s 时质点的加速度为0 5．关于两个点电荷间相互作用的电场力，下列说法中正确的是（ ） （A ）它们是一对作用力与反作用力 （B ）电量大的点电荷受力大，电量小的点电荷受力小 （C ）当两个点电荷间距离增大而电量保持不变时，这两个电场力的大小可能不变 （D ）当第三个点电荷移近它们时，原来两电荷间相互作用的电场力的大小和方向会变化 6．如图，光滑的水平面上固定着一个半径在逐渐减小的螺旋形光滑水平轨道。一个小球以一定速度沿轨道切线方向进入轨道，下列物理量中数值将 减小的是（ ） （A ）线速度 （B ）角速度 （C ）向心加速度 （D ）周期 7．如图所示，一只贮有空气的密闭烧瓶用玻璃管与水银气压计相连，气压计的两管内液面在同一水平面上。现降低烧瓶内空气的温度，同时上下移动气压计右管，使气压计左管的水银面保持在原来的水平面上，则气压计两管水银面的高度差Δh 与烧瓶内气体降低的温度Δt （摄氏温 标）之间变化关系的图像为（ ） v
上师大附中2011-2012学年第二学期 高一年级语文期末考试卷 （满分100分时间120分钟） 1、文学文化常识填空。（5分） 1.莫泊桑是（国籍）作家，其代表作有《》、《》等。 2.“左联五烈士”除了白莽、柔石以外，还有、、。 3.《梦游天姥吟留别》标题中的“吟”解释为。 4成都锦官门外有蜀先主庙、武侯祠。“蜀先主”指的是，“武侯”指的是。 5. “五岳”名山之中，“中岳”是指，“北岳”是指。 二、诗词名句默写。（5分） 6.秦人不暇自哀，而后人哀之；，。 7.三山半落青天外，。 8. ，使我不得开心颜。 9.锦江春色来天地，。 10.黄沙百战穿金甲，。 3、课内现代文阅读。（13分） ①明日书店要出一种期刊，请柔石去做编辑，他答应了；书店还想印我的译著，托他来问版税的办法，我便将我和北新书局所订的合同，抄了一份交给他，他向衣袋里一塞，匆匆的走了。其时是一九三一年一月十六日的夜间，而不料这一去，竟就是我和他相见的末一回，竟就是我们的永诀。 ②第二天，他就在一个会场上被捕了，衣袋里还藏着我那印书的合同，听说官厅因此正在找寻我。印书的合同，是明明白白的，但我不愿意到那些不明不白的地方去辩解。记得《说岳全传》里讲过一个高僧，当追捕的差役刚到寺门之前，他就“坐化”了，还留下什么“何立从东来，我向西方走”的偈子。这是奴隶所幻想的脱离苦海的惟一的好方法，“剑侠”盼不到，最自在的惟此而已。我不是高僧，没有涅槃的自由，却还有生之留恋，我于是就逃走。 ③这一夜，我烧掉了朋友们的旧信札，就和女人抱着孩子走在一个客栈里。不几天，即听得外面纷纷传我被捕，或是被杀了，柔石的消息却很少。有的说，他曾经被巡捕带到明日书店里，问是否是编辑；有的说，他曾经被巡捕带往北新书局去，问是否是柔石，手上上了铐，可见
II. Grammar and Vocabulary (20+30) Section A Direction: After reading the passage below. Fill in the blanks to make the passage coherent and grammatically correct (A) My parents moved from New Jersey to Germany when I was a child. After a few weeks of playing with neighbors of the same age. I was speaking fluent German. That' s probably not an option if you want to learn a language ____21____ your next international trip. However, there are some new ways to learn key words and phrases before your departure. ____22____ playground immersion(沉浸), the best way to learn a language used to be in a classroom. Today, there are many more options. With the help of technology, you can easily get a linguistic edge, and perhaps even a cultural one, too. The last few years ____23____ (see) a lot of language-learning software hitting the market .These programs, many of ____24____ have popular mobile apps, help beginners learn language basics. Take Memrise for example. This language-learning platform uses flashcards(教学卡片) as memory aids. Memrise offers instruction in 25 languages, and its basic level is free, ____25____ some advanced features available at $4.99 per month. There are so many language apps, all claiming to be the best, ____26___ there are even sites to help you sort if out. You can find detailed reports on these programs on Compare Language Apps: ____27____ independent testing site run by Professor Roumen Vesselinov at Queens College in New York. I’ve had access to most of these apps over the years. However, I found that they were ____28____ too complicated or too time-consuming to help me learn a language before an international trip. Perhaps my experience of acquiring a language early in life and then trying to acquire ____29____ in a classroom(three years of French, which didn’t really stick)also contributed to my skepticism (怀疑). The language experts I spoke with say you shouldn’t allow the promises of a course or an app ____30____ (convince)you that learning a language is easy. Experts agree that there is no substitute for "on-the-ground" experience practicing a new language with native speakers. (B) Increasingly, various phrases have been taking over a good old-fashioned "thank you" or "you’re welcome" in daily conversations in the United States. While ____31____ (dine)at a restaurant, when a waiter comes by to ask Americans ____32____ .they would like more water or bread, do you notice that they often say " I'm good,” rather 1 / 14
敦煌中学2019届高三第一次诊断考试 物理试题 一、单选题(共10小题,每小题3分,共30分) 1.下列说法中正确的是( ) A．物体的温度越高，说明物体内部分子运动越剧烈，每个分子的动能越大 B．物体的内能越大，物体的温度就一定越高 C．温度是分子平均动能的标志，温度越高，分子的平均动能就越大 D．物体吸热温度就会上升，所以温度越高的物体含有的热量就越多 2.关于第二类永动机，下列说法中正确的是( ) A．它既不违反热力学第一定律，也不违反热力学第二定律 B．它既违反了热力学第一定律，也违反了热力学第二定律 C．它不违反热力学第一定律，但违反热力学第二定律 D．它只违反热力学第一定律，不违反热力学第二定律 3.密闭容器内有一定质量的气体，当气体温度降低时同时减小它的体积，那么容器内的压强将如何变化 ( ) A．一定增大 B．一定减小 C．一定不变 D．无法确定 4.液晶显示器是一种采用液晶为材料的显示器，由于机身薄，省电，低辐射等优点深受用户的青睐，下 列关于液晶说法正确的是( ) A．液晶都是人工合成的，天然的液晶并不存在 B．液晶既有液体的流动性，又有光学的各向同性 C．当某些液晶中掺入少量多色性染料后，在不同的电场强度下，它对不同颜色的光的吸收强度不一样， 这样就能显示各种颜色 D．液晶的结构与液体的结构相同 5.如图所示，一向右开口的汽缸放置在水平地面上，活塞可无摩擦移动且不 漏气，汽缸中间位置有小挡板．初始时，外界大气压为p0，活塞紧压小挡板 处，现缓慢升高缸内气体温度，则如图所示的p－T图象能正确反映缸内气体 压强变化情况的是( )
A B C D 6.如图所示为一定质量的理想气体在p－V图象中的等温变化图线，A、B是双曲线上的两点，△OAD和△OBC的面积分别为S1和S2，则( ) A．S1
2017学年第二学期上大附中诊断测试高三年级英语试卷 II. Grammar and Vocabulary Section A Directions: After reading the passages below, fill in the blanks to make the passages coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks,use one word that best fits each blank. October 9 is the World Post Day. Once upon a time, if a friend or family member had to move away, you might not 1________(see) that person for years, or maybe ever again. That was before email, and before the smart phone. The only way to stay in touch was to do 2_________that now seems rather quaint(少见的): you had to write a letter. You might say, “But we have email. How different can an email be from a letter?” Yet email and letter-writing are very different. Writing an email is 3________(easy) thing in the world. You type a few sentences, press “send” and that’s it. Maybe a couple of minutes later you get a reply. To write a letter, on the other hand, takes more effort. 4________the letter is going to place a thousand kilometers away, possibly across the ocean, it might take weeks to reach the other person. Making an effort is therefore part of meaning of the letter. The care that you take shows your respect or love for your correspondent. That means you shouldn’t write on old paper. A page5________(tear) out for a notebook won’t do, nor should you scrawl(潦草地写) your letter with a pencil. Always the better letter6 _________(write) with a good pen in order to produce a physical object that says to the recipient, “I am glad to speak to you again.” And this carries over to the writing itself. There’s an old saying,” Words are cheap.” But this phrase shouldn’t apply7 ________the letter-writer. Each word is weighted; each phrase, worried over. It’s important to write as well as possible, 8____________the letter you exchange with the other person are entirely of the relationship you have with them. On World Post Day, people are encouraged 9___________(continue) to send letters in this good old-fashioned way. Why not 10___________(give) it a try if you haven’t send a letter recently, or ever? Section B Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.