党的十八届三中全会强调,经济体制改革是全面深化改革的重点,核心问题是处理好政府和市场的关系,使市场在资源配置中起决定性作用和更好发挥政府作用。2013年10月24日,财政部、海关总署和国家税务总局规定,在现行政策框架下,对中国(上海)自由贸易试验区内生产企业和生产性服务业企业进口所需的机器、设备等货物予以免税。下列各图中正确反映该政策对试验区内上述企业进口机器、设备影响的是( )
(注:图中D1为该政策实施前需求量,D2为该政策实施后需求量,价格不含关税)
A.③ B.② C.① D.④
将一只苹果斜向上抛出,苹果在空中依次飞过三个完全相同的窗户1、2、3.图中曲线为苹果在空中运行的轨迹.若不计空气阻力的影响,以下说法正确的是( )
A.苹果通过第1个窗户所用的时间最长
B.苹果通过第3个窗户的竖直方向平均速度最大
C.苹果通过第1个窗户重力做的功最大
D.苹果通过第3个窗户重力的平均功率最小
讯某山脉南、北两坡气候资料图(图中实绩表示气温、虚线表示降水),完成5-6题。
5、北坡为( )
A、阳坡、迎风坡 B、阳坡、背风坡 C、阴坡、迎风坡 D、阴坡、背风坡
6、该山脉最可能位于( )
A、地中海北部 B、墨西哥湾北部 C、莫桑比克海峡西部 D、波罗的海北部
下列关于物质或离子检验的推断正确的是
A. 向X溶液中滴加KSCN溶液,溶液显红色,证明X溶液中有Fe3+,无Fe2+
B. 用硝酸酸化Y溶液,无现象,再加入硝酸钡溶液,产生白色沉淀,则Y溶液中含有SO42-
C. 用玻璃棒蘸Z溶液在酒精灯上灼烧,火焰呈黄色,再透过钴玻璃观察火焰无紫色,则Z溶液中有Na+,无K+
D. 用盐酸酸化W溶液,无现象,再向其中滴加AgNO3溶液,产生白色沉淀,则W溶液中含有Cl-
如图所示,理想变压器副线圈通过输电线接两个相同的灯泡L1和L2,输电线的等效电阻为R。开始时,开关S断开,当S接通时,以下说法正确的是
A.通过灯泡L1的电流减小
B.副线圈两端的输出电压减小
C.输电线电阻上消耗的功率减小
D.变压器的输入功率增大
My job was to make classroom observations and encourage a training program that would enable students to feel good about themselves and take charge of their lives. Donna was one of the volunteer teachers who participated in this 26 .
One day, I entered Donna’s classroom, took a seat in the back of the room and 27 . All the students were working 28 a task. The student next to me was filling her page with “I Can’ts.” “I can’t kick the soccer ball.” “I can’t get Debbie to like me.” Her page was half full and she showed no 29 of stopping. I walked down the row and found 30 was writing sentences, describing things they couldn’t do.
By this time the activity aroused my 31 , so I decided to check with the teacher to see what was going on 32 I noticed she too was busy writing. “I can’t get John’s mother to come for a parents’ meeting.” I felt it best not to 33 .
After another ten minutes, the students were 34 to fold the papers in half and bring them to the front. They placed their “I Can’t” statements into an empty shoebox. Then Donna 35 hers. She put the lid on the box, tucked it under her arm and headed out the door. Students followed the teacher. I followed the students. Halfway down the hallway Donna got a shovel from the tool house, and then marched the students to the farthest corner of the playground. There they began to 36 . The box of “I Can’ts” was placed at the 37 of the hole and then quickly covered with dirt. At this point Donna announced, “Boys and girls, please join hands and 38 your heads.” They quickly formed a circle around the grave.
Donna delivered the eulogy (悼词). “Friends, we gathered here today to 39 the memory of ‘I Can’t.’ He is 40 by his brothers and sisters ‘I Can’ and ‘I Will’. May ‘I Can’t’ rest in 41 . Amen!”
She turned the students 42 and marched them back into the classroom. They celebrated the 43 of “I Can’t”. Donna cut a large tombstone from paper. She wrote the words “I Can’t” at the top and the date at the bottom, then hung it in the classroom. On those rare occasions when a student 44 and said, “I Can’t,” Donna 45 pointed to the paper tombstone. The student then remembered that “I Can’t” was dead and chose other statement.
26. A. job B. project C. observation D. course
27. A. checked B. noticed C. watched D. waited
28. A. on B. with C. as D. for
29. A. scenes B. senses C. marks D. signs
30. A. nobody B. somebody C. everyone D. anyone
31. A. curiosity B. suspect C. sympathy D. worry
32. A. and B. or C. but D. so
33. A. insert B. interrupt C. talk D. request
34. A. taught B. shown C. forced D. instructed
35. A. added B. wrote C. made D. folded
36. A. cry B. pray C. dig D. play
37. A. back B. bottom C. top D. edge
38. A. drop B. raise C. fall D. lift
39. A. keep B. thank C. forgive D. honor
40. A. remembered B. punished C. removed D. replaced
41. A. silence B. heart C. peace D. memory
42. A. down B. up C. off D. around
43. A. birth B. passing C. loss D. starting
44. A. awoke B. reminded C. forgot D. apologized
45. A. simply B. hardly C. seriously D. angrily
16.在下面一段文字横线处补写恰当的语句。使整段文字语意完整连贯,内容贴切,逻辑严密。每处不超过15个字。
在雾霾天进行户外锻炼,其后果往往是① 。有关专家提醒说,雾霾天各种污染物增多,不仅影响到呼吸、循环等系统,也会使雾霾颗粒累积在人的皮肤上。因此,出现雾霾天气时,② ,可以在家中进行太极、瑜伽等柔和的运动。如果要到户外运动,一是运动量不可过大,二是③ 。此外,出门前要戴好口罩,预防雾霾污染。
1918年,第一次世界大战结束。当协约国战胜德国的消息传到北京,中国知识分子曾上街游行,欢呼“公理战胜强权”。同时在北京创刊的《每周评论》将“主张公理,反对强权”作为其办刊宗旨。对“公理”的呼喊反映出中国知识分子
A.对民主科学的质疑 B.对平等与自由的向往
C.对独立参政的渴盼 D.对协约国希望的幻灭
Have you ever suddenly felt that someone you knew was in trouble-----and was he? Have you ever dreamed something that came true later? Maybe you have ESP.
ESP stands for Extrasensory Perception. It may be called a sixth sense. It seems to let people know about events before they happen, or events that are happening some distance away.
Here’s an example. A woman was ironing clothes. Suddenly she screamed, “My father is dead! I saw him sitting in the chair!” Just then, a telegram came. The woman’s father died of a heart attack. He died sitting in a chair.
There are thousands of stories like this one on record. Scientists are studying them to find out what’s behind these strange mental messages. Here’s another example――one of hundreds of dreams that have come true.
A man dreamed he was walking along a road when a horse and carriage came by. The driver said, “There’s room for one more.”The man felt the driver seemed dead, so he ran away. The next day, when the man was getting on a crowded bus, the bus driver said, “There’s room for one more.”
Then the man saw that the driver’s face was the same face he had seen in the dream. He wouldn’t get on the bus. As the bus drove off, it crashed and burst into flames. Everyone was killed!
Some people say stories like these are coincidences. Others, including some scientists, say that ESP is real. From studies of ESP, we may someday learn more about the human mind.
61. According to the passage, the author believes that the sixth sense is ______.
A. in existence B. imaginative C. not real D. impossible
62. By studying ESP, scientists may get to ______.
A. learn how people tell lies B. know more about human dreams
C. know more about human mind D. learn how strange things happen
63. In the last paragraph the underlined word“coincidences”probably means “______”.
A. things that may not happen B. things that happen in a dream
C. things that must happen D. things that happen by accident
如甲图所示,在y轴上A点沿平行x轴正方向以v0发射一个带正电的粒子,在该方向上距A点3R处的B点为圆心存在一个半径为R的圆形有界的匀强磁场,磁场方向垂直纸面向外,当粒子通过磁场后打到x轴上的C点,且速度方向与x轴正向成60°角斜向下。已知带电粒子的电量为q,质量为m,粒子的重力忽略不计,O点到A点的距离为。求:
(1)该磁场的磁感应强度B的大小
(2)若撤掉磁场,在虚线右侧加上一个与y轴平行的有界匀强电场(虚线为边界),如乙图所示,粒子仍按原方向入射,当粒子进入电场后一直在电场力的作用下打到x轴上的C点且速度方向仍与x轴正向成60°角斜向下,则该电场的左边界与y轴的距离为多少?
甲
乙
某研究机构利用水池(4m×2m×lm)、土壤、芦苇、水管等材料设计了一个人工湿地系统 (如下图所示)。读图回答22-23题。
22.该设计主要模拟的湿地功能有
①防风固沙 ②净化水质 ③涵养水源 ④塑造地貌
A.①③ B.②③ C.①④ D.②④
23.若用无植物的相同模拟系统实验,则检测到
A.出水口的排水量减少 B.出水口流速明显减慢 C.出水口的含沙量增加 D.土壤有机质含量增加
20世纪,国际格局从结构到组成都发生了很大变化。传统的地缘格局、战略关系和政治关系都发生了巨大变化。阅读材料并回答问题:
材料一 有学者指出:“二战后以美苏为两极的世界格局的形成和持续,代表着战后力量均势的出现和保持。在这种力量均势被打破之前,两极格局具有相对的稳定性。但是它又因国际力量对比的不断变化而受到撼动,并且受到逐步壮大起来的其他力量中心的挑战。”
(1)二战后两极格局在相对稳定性之下受到“撼动”和“挑战”的具体因素有哪些?
材料二 几个世纪以来,“欧洲合众国”一直是欧洲人魂牵梦绕的向往,……2009年11月19日首位“欧盟总统”和“欧盟外长”的诞生,欧洲一体化发展到一个新高度,实现了欧洲历史乃至人类政治文明的一个飞跃。
(2)有人说“欧盟总统和欧盟外长的诞生只不过是欧洲政治家所进行的一场政治游戏”,你如何看待这一观点?
材料三 进入新世纪以来,面对全球化和恐怖主义等诸多新问题,美国不得不重视多边合作,以便共同应对人类面临的新挑战。尤其是近一年来,美国陷入了经济危机,信贷紧缩、股市动荡、企业破产、经济衰退,加之伊拉克战争、阿富汗战争等,美国也面临着极大的困难。
(3)有人依据材料三的现象判断当今世界已经进入后美国时代,你怎样认识这一观点?请说明理由。
已知函数
(I)求函数的最小正周期;
(Ⅱ)求使函数取得最大值的
的集合.
过抛物线的焦点
的直线
与抛物线交于
两点
,若
两点的横坐标之和为
,则
( )
A. B.
C.5 D.
生物体的生命活动离不开水,下列关于水的叙述,错误的是()
A. 在最基本生命系统中,H2O有自由水和结合水两种存在形式
B. 由氨基酸形成多肽链时,生成物H2O中的氢来自氨基和羧基
C. 有氧呼吸时,生成物H2O中的氢来自线粒体中丙酮酸的分解
D. H2O在光下分解,产生的将固定的CO2还原成(CH2O)
2014年冬奥会已于今年2月7日—23日在索契市举行,索契是俄罗斯南部著名城市,是世界著名夏都之一。读图1,据此完成1~2题。
图1
1.索契位于世界上纬度最高的亚热带气候分布区,
关于其气候成因叙述正确的是( )
①位于大陆内部,夏季受大陆气团控制,气温高,降水少
②临海,冬季有增温增湿作用
③北部有高大山脉,阻挡了南下的寒冷气流
④冬季受中纬较暖西风的影响
A.①③④ B.①②③ C.②③④ D.①②④
2.关于索契地区建冰雪场有利条件的论述,正确的是( )
①北部有高大山地,坡度适宜,利于滑雪场的建立
②冬季,山地气温低,受中纬西风影响,降雪量大,山地积雪多
③亚热带季风区,冬季温和,有利于保护运动员不受冻伤
④冬季严寒,利于冰场封冻,投资少,建设便利
A.①② B.②③ C.③④ D.①④
提取鼠肝脏细胞的线粒体为实验材料,向盛有线粒体的试管中注入丙酮酸时,测得氧的消耗量较大;当注入葡萄糖时,测得氧的消耗量几乎为零;同时注入细胞质基质和葡萄糖时,氧消耗量又较大。对上述实验结果的解释不正确的是( )
A.丙酮酸彻底分解和水的生成过程都是在线粒体内进行的
B.在线粒体内不能完成葡萄糖的分解,但能完成丙酮酸的分解
C.葡萄糖分解成丙酮酸是在细胞质基质中完成的
D.有氧呼吸中,水的参与和生成都是在细胞质基质中进行的
右图是某二倍体生物一个细胞分裂示意图,图中①~④代表染色体,英文字母代表基因,下列推测正确的是
A.该细胞处于减Ⅰ间期,染色体已完成复制
B.该细胞分裂产生的生殖细胞的基因型是AaDd和Aadd
C.该细胞有2个染色体组,有8个核DNA分子
D.该细胞的下一时期发生①、②、③、④的随机组合