一段路程为s，一辆警车通过前的平均速度为V₁，通过后的平均速度为V₂，则汽车在全程中的平均速度为(     )

A.     B.      C.      D.

某工厂男女职工各100人，调查显示，女性色盲2人、携带者9人；男性患者8人。这个群

体中色盲基因的频率为

A.9.5%        B． 7.25%       C． 7%       D． 10.5% 

史载唐朝后期长安城中的崇仁坊“一街辐辏（聚集），遂倾（超过）两市，昼夜喧呼，灯火不绝，京中诸坊，莫之与比。”但在唐朝前期它  

A．作为商业区，受日中为市的严格限制

B．作为商业区，繁华程度远逊于东西两市

C．属于住宅区，不允许从事商业活动   

D．属于住宅区，商业只为日常生活服务

19世纪末，在严重的民族危机的刺激下，一些人倡导“实业救国”，在社会上产生了广泛的影响。一种观点认为，“实业救国”具有积极的、进步的意义；另一种观点认为，“实业救国”在当时的中国只是一种幻想，不可能实现。你同意哪一种观点?请说明理由。

下左图中a为纬线b为晨昏线，M、N为晨昏线与纬线a的交点，两点的经度差为90°.若a为昼弧,M点的日落时间（   ）

A．9时        B．12时          C．19时        D．15时

右图所示的重大军事行动，标志着

       A．解放战争开始转入战略反攻

       B．解放战争战略决战的开始

       C．淮海战役结束

       D．南京国民政府被推翻

下列有关生物膜中膜蛋白的叙述，错误的是
A. 膜上载体蛋白和受体蛋白均具有特异性
B. 载体蛋白和通道蛋白在跨膜运输物质时均消耗ATP
C. 线粒体内膜比外膜中蛋白质种类和数量都多
D. 膜蛋白的产生可能需要内质网、高尔基体、细胞膜的参与

Children should learn to be responsible for themselves in order to live a secure future. You can read this article to help your child become responsible.

Power of examples.

We all know that kids are influenced by the actions of elders, especially their parents. 16  Parents should follow good time management skills and should also teach their kids the significance of these skills.  17  Even small things can influence the mind of your child, like turning the lights off when there is no one in the room, or waking up on time for the day's work.

  18 

You can reward kids with something they like to encourage them to do things willingly. Give your kid small duties like washing clothes and cleaning the garden, etc. , and tell him the importance of doing these duties n his own.   19 

Teach him money management.

To prevent your kid from becoming a spendthrift(挥霍者) you should teach him the importance of saving money. Do not splurge (乱花钱) money on your kid and instead, ask him to manage his allowance budget(零花钱预算). If your kid uses up his money quickly, you should teach him to be responsible for his money. 20 

A. Teach them to earn money by themselves.

B. This way he will not spend more than he has.

C. Make learning and holding responsibility fun for your kids.

D. You should complete the hard task together with them.

E. Give your child duties and rewards.

F. To make kids more responsible, parents should check their own behaviour.

G. The actions also matter.

将玉米的PEPC酶基因导入水稻后，测得光照强度对转基因水稻和原种水稻的气孔导度及光合速率的影响结果，如图所示．（注：气孔导度越大，气孔开放程度越高）

（1）水稻叶肉细胞进行光合作用的场所是    ，捕获光能的色素中含量最多的是     ．

（2）CO₂通过气孔进入叶肉细胞后，首先与   结合而被固定，固定产物的还原需要光反应提供[    ]       ．

（3）光照强度低于8×10²μmol•m^﹣2•s^﹣1时，影响转基因水稻光合速率的主要因素是    ；光照强度为10～14×10²μmol•m^﹣2•s^﹣1时，原种水稻的气孔导度下降但光合速率基本不变，可能的原因是         ．

（4）分析图中信息，PEPC酶所起的作用是                   ；转基因水稻更适宜栽种在                              的环境中．

下图反映的是中国20世纪50年代至80年代城镇人口数的变化和农业总产值增长率的变化。两组数据在1960-1965年都发生了明显变化，其背后的共同原因是

A.社会主义改造和“一五”计划的完成 B.国民经济调整的促进
C.“大跃进”和人民公社化运动的开展 D.“文化大革命”的波及

Philadelphia, Pennsylvania is America’s fifth largest city. Once a major American colonial city, it is the home of America’s first library, its first hospital, and its first zoo. Now it is also the first US city to be named a World Heritage City. On November 6, 2015, Philadelphia joined more than 260 other cities that have been recognized for their influence on the world. These cities include Paris, France, Florence, Italy, and Cairo, Egypt.

“Today marks the start of a new and exciting chapter in the history of Philadelphia,” remarked Philadelphia Mayor Michael Nutter when the announcement was made. “As a World Heritage City, Philadelphia is being officially recognized on the global stage for its wealth of contributions to the world.

To be named a World Heritage City, a city must be home to a UNESCO World Heritage site. UNESCO World Heritage sites are selected for their universal value and significance. For Philadelphia, the site is Independence Hall.

Independence Hall is where two of the most important documents in US history—the Declaration of Independence and the US Constitution—were adopted. The Declaration of Independence, approved on July 4, 1776, united the 13 former British colonies and declared them independent from British rule. The US Constitution, signed in 1787, established the American democratic system of government. A democracy is a system of government in which the people elect their leaders. The Constitution later spelled out the basic freedoms American citizens have.

Philadelphia Deputy Mayor Alan Greenberger says the city’s selection as a World Heritage City also reflects its educational, cultural, and economic achievements. The city is home to dozens of colleges and universities, and many museums, such as the Philadelphia Museum of Art. “Philadelphia has rightfully earned its place as one of the greatest cities in the world.” Greenberger says.

12. We can learn from Paragraph 1 that Philadelphia ________.

  A. is known for many America’s firsts       B. has been famous as a World Heritage City

  C. has the best American hospital           D. has contributed a lot to the global economy

13. In Paragraph 2, Michael Nutter is talking about _________.

  A. the World Heritage City                B. the significance of the city’s selection

  C. the history of Philadelphia              D. the contributions of the city

14. What opinion does Alan Greenberger hold?

  A. It’s easy for the city to win the honor.     B. The honor will bring the city a better future.      

  C. It won’t be long before the city takes off.   D. The city really deserves the honor.

15. What could be the best title for the text?

  A. Philadelphia Makes a Difference      B. Philadelphia Develops a Lot            

  C. Philadelphia Makes History          D. Philadelphia Wins Global Respect

.向物质的量浓度均为1mol/L的Fe₂(SO₄)₃、CuSO₄的1L混合液中加入a mol铁粉，充分反应后，下列说法正确的是                                 (          )

A. 当a≤1时，发生的反应为Fe+Cu²⁺＝Fe²⁺+Cu

B. 当固体有剩余时，溶液中一定存在Fe²⁺、Cu²⁺

C. 当1≤a＜2时，溶液中 n(Fe²⁺)＝(2+a)mol

D. 若有固体剩余，则固体中一定有铁，可能有铜

《华严经>日：“心如工画师，能画诸世间。五蕴悉丛生，无法而不造。”下列与材料观点完全一致的是
①气之所以能动静者，理为之宰也
②凡可状皆有也；凡有皆象也；凡象皆气也
③心生法生，心灭法灭；心染则国土染，心净则国土净
④心外无物，天下无一物非吾度内者
A. ①② B. ③④ C. ①③ D. ②④

2015年11月，中国首款大型民用飞机C919在上海正事下线。该飞机由36所高校参与研制，主要零部件及机载系统来自于西安、沈阳等飞机制造企业和16家跨国公司。据此，回答第10、11题。

10. 图5为“工业区位因素影响力模式图”（图中各点与中心距离的长短表示各区位因素影响程度的大小），正确表示飞机制造业区位因素的是

A. ①  B.②  C.③  D.④

11. C919民用飞机的制造说明

A.随着科技进步工业联系趋向于全球化 B.零部件企业分散各地会增加生产成本

C.工业生产专业化会削弱企业间的联系 D.为了降低生产成本多个企业走向集聚

同温同压下，对于等体积的一氧化氮（¹⁴N¹⁸O）和一氧化碳（¹³C¹⁸O）气体，下列说法正确的是: （    ）

    A．含相同的分子数和原子数       B．含相同的分子数和电子数

    C．含相同的质子数和中子数       D．所含分子数和质量均不相同

已知f(x)＝x²＋3xf′(2)，则f′(2)＝________.

．短周期主族元素W、X、Y、Z的原子序数依次增大，W的简单氢化物可用作制冷剂，

Y的原子半径是所有短周期主族元素中最大的。由X、Y和Z三种元素形成的一种盐

溶于水后，加入稀盐酸，有黄色沉淀析出，同时有刺激性气体产生。下列说法不正确

的是

A．X的简单氢化物的热稳定性比W强

B．Y的简单离子与X的具有相同的电子层结构

C．Y与Z形成化合物的水溶液可使蓝色石蕊试纸变红

D．Z与X属于同一主族，与Y属于同一周期

如图，MN、PQ两条平行的光滑金属轨道与水平面成θ角固定，轨道间距为l．空间存在磁感应强度大小为B、方向垂直于轨道平面向上的匀强磁场。质量为m的金属杆ab水平放置在轨道上，其电阻为R．由静止释放ab，轨道足够长且电阻不计，重力加速度为g．求：

（1）金属杆ab速度的最大值；

（2）当金属杆ab的加速度为a=gsinθ，回路的电功率．

W、X、Y、Z是原子序数依次增大的同一短周期元素，W是金属元素，X是地壳中含量最多的金属元素，且W、X的最高价氧化物的水化物相互反应生成盐和水；Y、Z是非金属元素，Y与W可形成离子化合物W₂Y；G在Y的前一周期，其原子最外层比Y原子最外层少一个电子．

（1）X的原子结构示意图为  ；

（2）W、X的最高价氧化物的水化物相互反应的离子方程式为  ；

（3）工业上制取X单质的化学方程式为  ；

（4）G的气态氢化物与Y的最高价氧化物的水化物恰好反应生成的正盐溶液中，离子浓度由大到小的顺序为  ；在催化剂作用下，汽车尾气中G的氧化物GO与CO两种气体能相互反应转化为无污染、能参与大气循环的两种气体，若有33.6L（已换算成标准状况）一氧化碳参加反应，转移的电子数为  mol；

（5）298K时，Z的最高价氧化物为无色液体，0.25mol该物质与一定量水混合得到Z的最高价氧化物的水化物的稀溶液，并放出a kJ的热量，该反应的热化学方程式为  ．

如图所示，在匀强电场中A、B两点分别放入两个带正电的点电荷q₁和q₂，且q₁=q₂。已知q₁在A点的电势能为E_P1，q₂在B点的电势能为E_P2。下列说法正确的是

A．只有当零电势点选在A点时才有E_P1>E_P2

B．只有当零电势点选在B点时才有E_P1>E_P2

C．只有当零电势点选在无穷远时才有E_P1>E_P2

D．无论零电势点选在何处总有E_P1>E_P2