如上右图所示，定值电阻R₁=20Ω，电动机绕线电阻R₂=10Ω，当电键S断开时，电流表的示数是I₁=0.5A,当电键合上后，电动机转动起来，电路两端的电压不变，电流表的示数I和电路消耗的电功率P应是:

 A.I=1.5A       B.I<1.5A       C.P=15W         D.P<15W

下列说法正确的有

①太空中，根失去向地性是因为生长素不能进行极性运输

②脱落酸能够调控细胞基因组的表达，促进果实的衰老和脱落

③标志重捕法调查种群密度时，两次捕获期间有部分个体迁出该地区，调查结果不一定大于实际值

④种群密度是种群最基本的数量特征，可以预测种群数量变化趋势

⑤从30℃的环境进入5℃，小白鼠的散热量增加，产热量也相应增加。

⑥抗体、淋巴因子和血红蛋白均存在于内环境中。

A. 2项    B. 3项    C. 4项    D. 5项

造成下面漫画中现象的因素有很多，其中最根本的是（   ）

A．肉牛饲养周期长，投入多

B．猪肉、鸡肉等食品安全问题频发

C．我国居民膳食结构发生变化

D．肉牛规模化养殖使成本大幅提高

秦始皇、唐太宗、明成祖、雍正帝四位皇帝穿越了时空的隧道，坐在一起谈政治。秦始皇说：“我首创了一套沿用了2000多年的政治体制，功劳盖世。”唐太宗说：“可是留下了丞相篡权的后遗症，不如我三分相权，相互监督，确保了我的独尊地位。”明成祖站起来说：“得了吧，我废除丞相，设立内阁，才感到大权在握的踏实。”雍正帝说：“都别自吹了，只有我才真正实现了咱们皇位世袭、权力至上的梦想。”他们的言论：

A．只有唐太宗的说法与史实相符    B．都与史实不符合

  C．只有明成祖的说法与史实不符    D．有两位皇帝的言论与史实不符

无色的混合气体甲，可能含NO、CO₂、NO₂、NH₃、N₂中的几种，将100 mL甲气体经过如图各装置，结果得到酸性溶液，而几乎无气体剩余，下列说法不正确的是(　　)

A．气体甲中不可能有NO₂和N₂                B．气体甲中有20 mL NH₃

C．通过足量Na₂O₂后剩余的气体只有NO₂     D．气体乙中有32 mL NO和48 mL CO₂

市场上有一种新型的强力洗衣粉，特点是去污速度快，已知每投放（且）个单位的洗衣粉液在一定量水的洗衣机中，它在水中释放的浓度（克/升）随着时间（分钟）变化的函数关系式近似为，其中，若多次投放，则某一时刻水中的洗衣液浓度为每次投放的洗衣液在相应时刻所释放的浓度之和，根据经验，当水中洗衣液的浓度不低于4（克/升）时，它才能起有效去污的作用.

（1）若只投放一次4个单位的洗衣液，则有效去污时间可能达几分钟？

（2）若先投放2个单位的洗衣液，6分钟后投放个单位的洗衣液，要使接下来的4分钟中能够持续有效去污，试求的最小值（精确到0.1，参考数据：取）

有学者认为明末至清初是一个“天崩地解”的时代，因为“一些最敏锐的心灵”进行了

反思，期望为当时的社会找寻某种解决问题的方案。“一些最敏锐的心灵”是指

A.顾炎武  黄宗羲 李 贽  王夫之    

B.李时珍  徐光启 宋应星

C.罗贯中  施耐庵 吴敬梓 蒲松龄    

D.林则徐  魏  源   姚 莹

I believe you can do your best. Not being the best but toughing the limits of what you’re capable of. I gained this belief from my third grade teacher, the most special, honored, trustworthy, and loved person in my life.

Mr. Myrus was always perfectly dressed and spoke with the belief that talking to eight-year-olds didn’t mean he had to sacrifice proper statements or grammars. And he was demanding but he wasn’t unreasonable or cruel. He simply felt that no matter what your best was, you should achieve it.

As luck would have it, I met him again as my eighth grade math teacher. I was not, nor ever will be, gifted in math. I remember my struggles in class. “I don’t know the answer,” I would say, “I can’t do it!” “Perhaps you don’t know the answer,” he would say quietly. “Do you think we might figure it out together? How do you know what you can do until you try?”

Mr. Myrus lived around the corner, and I would often stop by to talk while he worked in his garden. I knew there was someone who let me know that if I had really tried, that was enough.

 “Don’t be so hard on yourself,” he’d say. “Stop blaming yourself. Did you try your best? Well, then you’re not a failure,” he often told me these words.

Mr. Myrus died in 1978. I had never thought about his death. He was too young. I felt sorry. But when I think about him now, I don’t feel so sorry. He taught me to be kind, not only to others, but to myself. He taught me my own value. He taught me about honor, about truth, and about doing my best—and that all feelings and beliefs have dignity and deserve respect. And of all the things I know, this I believe: We can’t all be “the best”, but we can, each of us, be our best, and I know that’s true because Mr. Myrus told me that.

24. What can we know about Mr. Myrus according to the passage?

A. He usually treats his students in a hard way.

B. He is responsible for his teaching and students.

C. He is a person who isn’t particular about what he wears.

D. He sometimes is cruel and unreasonable to his students.

25. The author thought he was a lucky dog because ______.

A. he had got a great belief from his teacher

B. Mr. Myrus had taught him for eight years

C. Mr. Myrus became his teacher a second time

D. he developed a good relationship with Mr. Myrus

26. It can be concluded from the third paragraph that ______.

A. the author preferred other subjects to math

B. Mr. Myrus thought it was very easy to learn math

C. the author was ashamed to admit his math was poor

D. Mr. Myrus helped the author build up his confidence

27. What can we learn by reading the passage?

A. The author hoped to live a positive life.

B. The author may have become a teacher.

C. The author liked to recall his childhood.

D. The author ended up being a man of self-confidence.

钴的化合物在磁性材料生产、电池制造、催化剂制备等方面应用非常广泛。

（1）Co²⁺基态核外电子排布式为                           。

（2）制备[Co(H₂O)₆]²⁺反应为(NH₄)₂[Co(SCN)₄]+6H₂O＝[Co(H₂O)₆](SCN)₂+2NH₄SCN。

①配合物[Co(H₂O)₆]²⁺中与Co²⁺形成配位键的原子是             （填元素符号）；

SCN^－的空间构型为             （用文字描述）。

②NH₄SCN在180～190℃分解并制得胍（结构简式如题图1所示），胍分子中碳原子杂化轨道类型为             ；1mol胍中含σ键数目为             。

（4）该晶体具有钙钛矿型的立体结构，边长为a pm，Ti与O间的最短距离为        nm。

The twins, Who ________   their homework, were allowed to play badminton on the playground.
A. will finish           B. finish       C. have finished         D. had finished

已知，，，函数．

（1）当时，求不等式的解集；

（2）若的最小值为，求的值，并求的最小值．

如果基因型为AA、Aa、aa的一个种群后代，在某一环境中的生存能力或竞争能力是AA=Aa＞aa，则在长期的选择过程中，下列说法错误的是（）

      A．  这对等位基因中A基因所控制的性状更适应环境

      B．  A的基因频率将逐渐增加，而a的基因频率将逐渐下降

      C．  在持续选择条件下，a基因的频率不可能降为0

      D．  种群基因频率的改变是生物进化的标志，生物进化就标志着新物种的产生

若，则展开式中的常数项为           

读“重庆四面山2009年5——9月份相同降水量不同标准地林冠截留能力表”，判断下列说法正确的是

A.森林树种越单一，地表径流越少

B.森林树种越丰富，生态效益越优

C.涵养水源能力：针叶林＞常绿阔叶林＞针阔混交林

D.不同标准地河流含沙量：针叶林＜常绿阔叶林＜针阔混交林

2．下列各句中，没有语病的一句是

A．在2016年里约奥运会女子排球决赛中，中国队以3：1战胜塞尔维亚队，夺得冠军，这是女排再夺时隔12年后的的奥运冠军。

B．关于将取消“211”“985”院校工程建设这一话题，社会传言很多，现在大家一般认可的是以由教育部官方文件的这一说法为准。

C．电信网络诈骗犯罪依然高发频发，已经成为社会一大公害，特别是近期发生的多起大学生被诈骗案，引发社会高度关注，广大群众对此类犯罪活动深恶痛绝。

D．走节俭型政府之路就是要采取严厉措施，从政府入手，从公务消费入手，坚决杜绝浪费，提高财政资金使用，将省下来的钱，用在为民谋利的“刀刃”上。

甲、乙两烧杯中各盛有100mL3mol/L的盐酸和NaOH溶液，向两烧杯中分别加入等质量的铝粉，反应结束后，测得生成的气体体积比为V（甲）：V（乙）=1：2，则加入铝粉质量为（    ）

A. 2.7g    B. 3.6g   C. 1.8g   D. 5.4g

2014年9月4日，《国务院关于深化考试招生制度改革的实施意见》公布。将于2017  年起对高考的内容、形式、录取、管理等环节进行改革，其中不分文理科、取消艺体特长  生加分等10项变化备受关注。一项更为全方位、系统的高考改革渐次拉开。改革发展走到今天，国务院高度关注教育等民生改革，努力让人民群众过上更加幸福的生活。这表政府（   ）

①履行了社会公共服务的职能

②坚持科学执政和民主执政

③运用财政政策解决民生问题

④深入贯彻落实科学发展观

A.①②   B.③④    C.①④   D.②③

函数过点，且当时，函数取得最大值1.

（1）       将函数的图象向右平移个单位得到函数，求函数的表达式;

（2）       在（1）的条件下，函数，如果对于，都有，求的最小值.

Attitudes toward new technologies often fall along generational lines. That is, generally, younger people tend to outnumber older people on the front end of a technological shift.

It is not always the case, though. When you look at attitudes toward driverless cars, there doesn’t seem to be a clear generational divide. The public overall is split on whether they’d like to use a driverless car. In a study last year, of all people surveyed, 48 percent said they wanted to ride in one, while 50 percent did not.

The fact that attitudes toward self-driving cars appear to be so steady across generations suggests how varying the shift to driverless cars could be. Not everyone wants a driverless car now—and no one can get one yet—but among those who are open to them, every age group is similarly involved.

Actually, this isn’t surprising. Whereas older generations are sometimes reluctant to adopt new technologies, driverless cars promise real value to these age groups in particular. Older adults, especially those with limited moving or difficulty driving on their own, are one of the classic use-cases for driverless cars.

This is especially interesting when you consider that younger people are generally more interested in travel-related technologies than older ones.

When it comes to driverless cars, differences in attitude are easily noticeable based on factors not related to age. College graduates, for example, are particularly interested in driverless cars compared with those who have less education, 59 percent of college graduates said they would like to use a driverless car compared with 38 percent of those with a high-school diploma or less.

Where a person lives matters, too. More people who live in cities and suburbs said they wanted to try driverless cars than those who lived in rural areas.

While there’s reason to believe that interest in self-driving cars is going up across the board, a person’s age will have little to do with how self-driving cars can become mainstream. Once driverless cars are actually available for sale, the early adopters will be the people who can afford to buy them.

56. What happens when a new technology appears?

　 A. It often leads to great inventions in other related fields.

　 B. It contributes greatly to the advance of society as a whole.

C. It further widens the gap between the old and the young.

　 D. It usually draws different reactions from different age groups.

57. What does the author say about the driverless car?

　 A. It does not seem to create a generational divide.

　 B. It will not necessarily reduce road accidents.

　 C. It has given rise to unrealistic expectations.

　 D. It may start a revolution in the car industry.

58. Why does the driverless car appeal to some old people?

　 A. It saves their money and energy.              B. It helps with their moving.

　 C. It adds to the safety of their travel.        　 D. It makes their life more interesting.

59. What is likely to affect one’s attitude toward the driverless car?

　 A. The field of their special interest.              B. The location of their living place.

　 C. The amount of training they received.     　 D. The length of their driving experience.

Here are some traditional German beer games .

Beer Boot Pass

A very , very popular game played in Germany is the beer boot pass ( Bier Boot ) , which has gained popularity all over the world . The game is usually played to pin the next round of beer on a person . In this , a full glass of beer is passed around in the group—there are some rules for this—it has to be tipped every time before it is passed and not a drop of beer must be spilled . The second-to-last person who finishes the beer must pay for the next round . The game then becomes all about judgment because either you drink the entire beer or have a sip and pass it on . You never know who the second to last person will be , so the uncertainty and excitement makes the game a favorite .

Beer Crate-Running

This is a traditional game that is extremely popular in Germany , Switzerland , and Austria , more popularly referred to as Kastenlauf . The game is similar to running a race , where a route is marked , ranging from anywhere between 5-12 km . Each participant brings a crate of beer ( the size and quantity will be specified ) . The first person who success fully finishes the entire crate of beer before getting to the finish line wins .

Flunkyball

This outdoor game is played with one team being matched against another , with equal numbers in both . The teams stand on opposite sides of the ground in a line , with their beers lined before them . An empty bottle or a tin can is placed in the center and another object ( used as an aim ) is brought in , something like a tennis ball . The first team ( A ) hits the ball onto the target to tumble（打翻）it . Once the bottle has tumbled , team A will start drinking their beers . Meanwhile , team B must run to the center , place the bottle upright , find the ball , and cross back into the line before yelling ‘ Stop ’ . Team A then stops drinking and team B starts to throw the ball at the bottle and carrying forward the game . The game continues till one team has finished all their beer and they are declared winners .

Drinking Relay

Divide the group of people into two teams and get them to stand in a line with beer placed in front of each member . At the blow of the whistle , the first person lifts the glass and starts drinking the beer . After he is done , he has to turn the glass over to show that there is no more beer in the glass . Then , the next person starts drinking and so on . The next in line can only drink when the first person has emptied his glass . The team whose last member empties the glass ahead of others wins .

Herman the German

Even though this game seems simple , it is a lot of fun . It runs on the lines of ‘ Who stole the cookie ’ . A person is chosen as ‘ Herman the German ’ ( HTG ) and he has to get the game running . The other members sit in a random manner and are given names , better if they are confusing names like China Port No. 1 , Rum Master Blaster etc . The game starts with HTG saying – “ HTG dropped a missile on China Port No. 1 , sir ” and China Port No. 1 has to reply with – “ It wasn’t me , sir . ” Then HTG replies – “ Who then , sir ” and it goes on . The sentence has to end with ‘ sir ’ and if it doesn’t , then the player has to down a beer . Similarly , if at any point the players fumble , they have to do the same . The tension makes the players forget things and there’s a whole lot of beer flowing as a result .

28．Which two games have something to do with running ?

A. Beer Boot Pass and Beer Crate-Running

B. Flunkyball and Drinking Relay

C. Beer Crate-Running and Flunkyball

D. Drinking Relay and Herman the German

29．The loser will have to buy beers for others in the game __________ .

A. Beer Boot Pass           B. Beer Crate-Running

C. Flunkyball               D. Drinking Relay

30．A person with a good memory may have a advantage in playing __________ .

A. Beer Boot Pass           B. Flunkyball

C. Drinking Relay           D. Herman the German

31． Which of the following statements is listed as a rule of the games ?

A. Every person has to sip the beer when playing Beer Boot Pass .

B. The person who replies to HTG with “ sir ” at the end will be punished .

C. The team can start drinking their beers as soon as they throw the ball in Flunkyball

D. The team members have to drink their beers in turn when playing Drinking Relay .