篇一：2015年北京市房山区高考数学一模试卷(理科)解析
2015年北京市房山区高考数学一模试卷（理科）
一、选择题：本大题共8小题，每小题5分，共40分．在每小题列出的四个选项中，选出符合题目要求的一项，直接涂在答题卡上．
2 1．（5分）（2015?房山区一模）已知集合M={x∈R|x﹣x=0}，N={x|x=2n+1，n∈Z}，则M∩N为（ ）
A．{0} B．{0，1} C．{1} D．?
22 2．（5分）（2015?房山区一模）双曲线x﹣my=1的实轴长是虚轴长的2倍，则m=（ ）
A．4 B．2 C． D．
3．（5分）（2006?天津）设变量x、y满足约束条件，则目标函数z=2x+y的最小值为（ ）
A．2 B．3 C．4 D．9
4．（5分）（2015?房山区一模）从5名学生中选出4名分别参加数学、物理、化学、英语竞赛，其中学生甲不参加物理、化学竞赛，则不同的参赛方案种数为（ ）
A． 24 B． 48 C． 72 D． 120
2 5．（5分）（2015?房山区一模）已知二次函数f（x）=ax+bx，则“f（2）≥0”是“函数f（x）在（1，+∞）上为增函数”
的（ ）
A．充分不必要条件 B． 必要不充分条件 C．充要条件 D． 既不充分也不必要条件
6．（5分）（2015?房山区一模）一个棱长为2的正方体沿其棱的中点截去部分后所得几何体的三视图如图示，则该几何体的体积为（ ）
A．7
7．（5分）（2015?房山区一模）向量=（2，0），=（x，y），若与﹣的夹角等于
A．4 B．2 C．2 D． ，则||的最大值为（ ） B． C． D．
8．（5分）（2015?房山区一模）一个人骑车以6米/秒的速度匀速追赶停在交通信号灯前的汽车，当他离汽车25米时，交通信号灯由红变绿，汽车开始做变速直线行驶（汽车与人的前进方向相同），若汽车在时刻t的速度v（t）=t米/秒，那么此人（ ）
A．可在7秒内追上汽车B．不能追上汽车，但其间最近距离为16米
C．不能追上汽车，但其间最近距离为14米 D．不能追上汽车，但其间最近距离为7米
二、填空题：本大题共6小题，每小题5分，共30分．把答案填在答题卡指定位置．
9．（5分）（2015?房山区一模）已知复数z满足（1+i）z=1﹣i，则复数z=．
10．（5分）（2012?广东）执行如图所示的程序框图，若输入n的值为8，则输出的s的值为
11．（5分）（2015?房山区一模）如图所示，四个相同的直角三角形与中间的小正方形拼成的一个边长为2的大正方形，若直角三角形中较小的锐角，现在向该正方形区域内随机地投掷一枚飞镖，飞镖落在小正方形内概率是．
12．（5分）（2015?房山区一模）如图所示，⊙O的割线PAB交⊙O于A、B两点，割线PCD经过圆心O，已知PA=6，AB=，PO=12，则⊙O的半径是．
13．（5分）（2015?房山区一模）已知直线l过点P（3，2），且与x轴、y轴的正半轴分别交于A、B两点，O为坐标原点，则△OAB面积的最小值为，此时，直线l的方程为．
14．（5分）（2015?房山区一模）已知函数y=f（x）是R上的偶函数，对?x∈R，都有f（x+4）=f（x）+f（2）成立．当x1，x2∈[0，2]，且x1≠x2时，都有，给出下列命题：
（1）f（2）=0；
（2）直线x=﹣4是函数y=f（x）图象的一条对称轴；
（3）函数y=f（x）在[﹣4，4]上有四个零点；
（4）f（2015）=f（1）．
其中所有正确命题的序号为．
三、解答题：本大题共6小题，共80分.解答应写出文字说明，演算步骤或证明过程.
15．（13分）（2015?房山区一模）已知函数
（Ⅰ）求f（x）的单调递增区间；
（Ⅱ）在△ABC中，三个内角A，B，C的对边分别为a，b，c，已知f（A）=，且△ABC外接圆的半径为，求a的． 值．
16．（13分）（2015?房山区一模）为了解今年某校高三毕业班准备报考飞行员学生的体重情况，将所得的数据整理后，画出了频率分布直方图（如图），已知图中从左到右的前3个小组的频率之比为1：2：3，其中第2小组的频数为12．
（1）求该校报考飞行员的总人数；
（2）以这所学校的样本数据来估计全省的总体数据，若从全省报考飞行员的同学中（人数很多）任选三人，设X表示体重超过60公斤的学生人数，求X的分布列和数学期望．
17．（14分）（2015?房山区一模）在如图所示的多面体中，EA⊥平面ABC，DB⊥平面ABC，AC⊥BC，且AC=BC=BD=2AE=2，M是AB的中点．
（Ⅰ）求证：CM⊥EM； （Ⅱ）求平面EMC与平面BCD所成的锐二面角的余弦值；
（Ⅲ）在棱DC上是否存在一点N，使得直线MN与平面EMC所成的角为60°．若存在，指出点N的位置；若不存在，请说明理由．
18．（13分）（2015?房山区一模）已知f（x）=﹣+x﹣ln（1+x），其中a＞0．
（Ⅰ）若函数f（x）在点（3，f（3））处切线斜率为0，求a的值；
（Ⅱ）求f（x）的单调区间；
（Ⅲ）若f（x）在[0，+∞）上的最大值是0，求a的取值范围．
19．（14分）（2015?房山区一模）动点P（x，y）到定点F（1，0）的距离与它到定直线l：x=4的距离之比为． （Ⅰ） 求动点P的轨迹C的方程；
（Ⅱ） 已知定点A（﹣2，0），B（2，0），动点Q（4，t）在直线l上，作直线AQ与轨迹C的另一个交点为M，作直线BQ与轨迹C的另一个交点为N，证明：M，N，F三点共线．
20．（13分）（2004?北京）下表给出一个“等差数阵”：
4 7 （ ） （ ） （ ） … a1j …
7
（ ） （ ） （ ） （ ） （ ） … a3j …
（ ） （ ） （ ） （ ） （ ） … a4j …
… … … … … … … …
ai1 ai2 ai3 ai4 ai5 … aij …
… … … … … … … …
其中每行、每列都是等差数列，aij表示位于第i行第j列的数．
（Ⅰ）写出a45的值；
（Ⅱ）写出aij的计算公式；
（Ⅲ）证明：正整数N在该等差数阵中的充要条件是2N+1可以分解成两个不是1的正整数之积．
2015年北京市房山区高考数学一模试卷（理科）
参考答案与试题解析
一、选择题：本大题共8小题，每小题5分，共40分．在每小题列出的四个选项中，选出符合题目要求的一项，直接涂在答题卡上．
21．（5分）（2015?房山区一模）已知集合M={x∈R|x﹣x=0}，N={x|x=2n+1，n∈Z}，则M∩N为（ ）
A． {0} B． {0，1} C． {1} D． ?
考点： 交集及其运算．
专题： 计算题；集合．
2分析： 化简M={x∈R|x﹣x=0}={0，1}，从而求M∩N．
2解答： 解：M={x∈R|x﹣x=0}={0，1}，
故M∩N={x|x=2n+1，n∈Z}={1}，
故选；C．
点评： 本题考查了集合的化简与运算，属于基础题．
222．（5分）（2015?房山区一模）双曲线x﹣my=1的实轴长是虚轴长的2倍，则m=（ ）
A．
考点：
专题：
分析：
解答：
224 B． 2 C．
D．
双曲线的简单性质． 圆锥曲线的定义、性质与方程． 直接利用双曲线的方程求出实轴长，虚轴长，列出方程求解即可． 解：双曲线x﹣my=1的实轴长是2，虚轴长：222， 双曲线x﹣my=1的实轴长是虚轴长的2倍，
可得：2=4
解得m=4．
故选：A．
点评：
， 本题考查双曲线的简单性质的应用，基本知识的考查．
3．（5分）（2006?天津）设变量x、y满足约束条件
A．
考点：
专题：
分析： 2 B． 简单线性规划的应用． 计算题；数形结合． ，则目标函数z=2x+y的最小值为（ ） 4 D． 9 3 C． 本题主要考查线性规划的基本知识，先画出约束条件的可行域，再求出可行域中各角点的坐标，将各点坐标代入目标函数的解析式，分析后易得目标函数Z=2x+y的最小值．
解答： 解：设变量x、y满足约束条件，
在坐标系中画出可行域△ABC，A（2，0），B（1，1），C（3，3），
则目标函数z=2x+y的最小值为3，
故选B
篇二：2016高三房山英语二模
房山区2016年高考第二次模拟测试试卷英 语 第二部分：知识运用（共两节，45分） 第一节 单项填空（共 15 小题；每小题 1 分，共 15 分） 21. George has travelled a lot. He _______ speak four languages A. must B. can C. may D. need 22. Cameron invited President Xi Jinping and Madame Peng to the UK, _______ a golden time in the relationship between China and UK. A. startingB. to start C. start D. started 23. Zika, the mosquito-borne disease, takes its name from the forest _______ the virus was first found.A. thatB. whenC. whereD. which 24. MaYun _______ an English teacher in a university for 5 years before he started Alibaba. A. will beB. is C. has been D. had been 25. More than 20 million people have used the public bicycles in Beijing since they _______ available in 2011. A. madeB. have been made C. have made D. were made 26. —Mary. Have you bought some meat? —No. I’ll do the shopping when I’ve finished _______ the flat. A. cleaning B. clean C. to cleanD. cleaned 27. The sports star came into the hall, _______ by a large crowd of fans. A. following B. followed C. follow D. to follow 28. —Is the teacher at the office? —No, I’m afraid she _______out. A. is going B. goes C. has gone D. had gone 29. —I’m very tired from working so hard. — I wish you ______ tired, because we’ve been invited to a party this evening. A. aren’tB. weren’t C. wouldn’t be D. won’t be 30. Tony is a determined person. ________ he has a dream, he will try his best to realize it. A. Unless B. Since C. Once D. While 31. To avoid air pollution, more and more people are traveling by public transportation _______ PM 2.5 rises. A. in caseB. so thatC. even though D. as long as 32. If you want to improve your oral English, _______ you need to do is to speak it as often as possible. A. that B. which C. it D. what 33. Success depends on many things, but the most important is _______ you make enough effort. A. whether B. when C. where D. after 34. You’d better put on your down coat, _______ it is too cold outside. A. but B. and C. for D. yet
35. _______ positive, and what’s in your mind will happen. A. To stayB. Stay C. Staying D. Stayed
第二节 完形填空（共 20 小题；每小题 1.5 分，共30分） Danny’s Courage
Danny came to my school in seventh grade. He was handsome and smart. I fell for him at once and so were many girls. That, , soon changed.
Danny had been in our school for about a week when his parents picked him up in a/an car that made loud noise. Obviously that Danny was poor and he was no longer material.
I had a poor family too; I just it from everyone. I was so ashamed of my situation that I never had kids come over to my house. I felt like my friends would judge me if they knew the truth. It was a lot of work keeping my One day, our teacher, Mr. Sims, announced that the seventh-grade field trip would be to an amusement park. The classroom was filled with as the girls discussed what to wear and what to bring with them. I felt’t be going. When asked why, Danny stood up and stated, “I can’ it. My dad hurt his back and has been out of I’m not asking my parents for money.”
Sitting back in his seat, Danny held his head up , even though whispering had begun. “Dan, I’m very proud of you for the situation that your parents are in. Not every student can do that.” replied Mr. Sims. Glaring at us, he spoke again, only louder.
“We’re going to do things differently. The trip is not until the end of the month, so we have plenty of time fund-raising. Each student will be responsible for bringing in an idea for fund-raising. Bring them in tomorrow. If a student doesn’t want to 1
questions?”
While walking home, I some boys talking with Danny. I worried that they were giving him atime, but as I got closer, I realized they were just about the best ideas for a fund-raiser.
In order to in the class, I lied and came up with excuse after excuse. But Danny made a in my life by standing up and admitting he was poor. I no longer felt I had to Danny, because of his courage and rather than his great looks, is someone I will never forget.
36. A. howeverB. thereforeC. thus D. so
37. A. expensiveB. shining C. sports D. old
38. A. bossB. boyfriend C. teacherD. actor
39. A. distinguished B. separatedC. hid D. heard
40. A. word B. secret C. promiseD. diary
41. A. disappointment B. concernC. excitementD. pride
42. A. confident B. curiousC. surprised D. upset
43. A. affordB. understandC. takeD. believe
44. A. debtB. work C. sight D. control
45. A. sadlyB. eagerlyC. proudlyD. worriedly
46. A. understanding B. improvingC. avoidingD. creating
47. A. to B. onC. at D. for
48. A. play B. contributeC. escape D. register
49. A. imagined B. suggestedC. noticedD. left
50. A. meaningful B. freeC. good D. hard
51. A. debating B. complaining C. learningD. writing
52. A. check B. live C. stayD. fit
53. A. difference B. sense C. challengeD. fortune
54. A. hesitateB. lie C. win D. suffer
55. A. intelligenceB. silence C. honesty D. kindness
第三部分：阅读理解（共两节，40分）
第一节（共15小题；每小题2分，共30分）
A
Nick Vujicic
Imagine getting through your busy day without hands or legs. Picture your life
without the ability to walk, care for your basic needs, or even hug those you love. Meet
Nicholas Vujicic. Without any medical explanation or warning, Nick was born in 1982
in Melbourne, Australia, without arms and legs.
The early days were difficult. Throughout his childhood, Nick not only dealt with
the typical challenges of school and adolescence, but he also struggled with depression
(抑郁) and loneliness. Nick constantly wondered why he was different from all the other kids. He questioned the purpose of life.
After experiencing many difficulties, Vujicic eventually began to realize that his experiences were inspiring to many people and began to be thankful for being alive. A key turning point in his life was when his mother showed him a newspaper article about a man dealing with a severe disability. This led him to realise he was not the only one with major struggles. When he was seventeen, he started to give talks. He has traveled around the world, sharing his story with millions, sometimes in stadiums full of people, speaking to a range of various groups such as students, teachers, young people, business professionals and so on. He has visited more than 50 countries and given thousands of talks. Now he is an encouraging speaker with TED.
Vujicic promotes his work through television shows and through his writing. His first book, Life Without Limits: Inspiration for a Ridiculously Good Life, was published by Random House in 2010. He markets a motivational DVD, Life’s Greater Purpose, a short documentary (纪录片) filmed in 2005. He markets a DVD for young people titled No Arms, No Legs, No Worries! In March 2008, Vujicic was interviewed by Bob Cummings for the 20/20 American television show.
According to Nick, the victory over his struggles, as well as his strength and passion（激情） for life today, can be owning to the power of hope. His family, friends and the many people he has met along the journey have inspired him to carry on, as well. Today this energetic young gentle man has achieved more than most people achieve in a lifetime.
56. What’s wrong with Nick when he was born?
A. He had no arms or legs. B. He was born with heart disease.
C. He was deaf and couldn’t speak.D. He needed an operation to stay alive
2
57. What difficulties did Nick meet when he was a child? A. He couldn’t afford to go to school. B. He was not accepted by any school. C. He had no one to talk with at home. D. He suffered mentally and physically. 58. When was the turning point in his life?A. He gave a speech at the age of 17. B. He finished his travel around the world. C. He was inspired by an encouraging article. D. He was invited to be a speaker with TED. 59. What contributes to Nick’s success? A. His tough early childhood experience. B. His power of hope and everlasting courage. C. His publishment of various inspiring books. D. His interview by Bob Cummings in March, 2008. B How to Tell Time Like a Man Our digital watch has two sides... tough and tougher. Get it now for an unbelievable $59! Your watch shouldn’t cost more than your car. It should look and feel like a power tool and not a piece of flashy jewellery. Wearing it shouldn’t make you think twice about swinging a hammer or changing a tire. A real man’s timepiece needs to be ready for anything. But that’s just my opinion. If you agree, maybe you're ready for the StauerCenturion Hybrid. Use your Promotional Code below and I’ll send it to you today for ONLY $59. This is a LOT of machine for not a lot of money. The Stauer Centurion Hybrid sports a heavy-duty metal body, detailed with a rotating bezel (旋转表圈) that allows you to track directions. The luminous（发光的）hour and minute hands mean you can keep working into the night. And the double digital displays give this watch more than one ability. The LCD windows displays the time, day and date, includes a stopwatch function, and a bright green backlight. We previously offered the Centurion for $199, but with the promotional code it's yours for ONLY $59! No matter what, this watch can keep up. Thanks to the Stauer 30- day Money Back Guarantee, you’ve got time to prove it. If you're not totally satisfied, return it for a full refund of the purchase price. You also get a 2-year replacement guarantee on both movements. But I have a feeling the only problem you'll have is deciding whether to keep the StauerCenturion on your dresser (化妆台) or put inside your toolbox. TAKE 70% OFF INSTANTLY! When you use your Promotional Code Stauer Centurion Hybrid Watch $199 Promotional Code Price Only $59 or two payments of $29
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A. help change a tire B. be used as decoration
C. be a useful and reliable toolD. be more expensive than a car
61. From the passage, we learn that the watch ______________.
A. is able to track directionsB. has no stopwatch function
C. includes a blue backlight D. is equipped with one digital display
62.The main purpose of the passage is to ______________.
A. advise people to collect watches
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C
Shanghai Children Prove Money Smarts
Shanghai, the financial center of China, sure has raised some
money-savvy children.
Ninety-two percent of Shanghai primary school students who took a
3
recent test of their money smarts showed an understanding of financial management, and some even knew a thing or two about stocks (股票) and debts.
The FQ, or Financial Quotient test was conducted on Wednesday at three primary schools. It was designed to measure the students’ ability to handle money, their understanding of spending and saving, and their knowledge of family finances and investment (投资).
One 8-year-old could identify six ways to make money － including investing in the stock and real estate (房地产) markets, selling old toys and getting good grades, said Xu Ting, head of the FQ Lab at Ant Fortune, the mobile financing platform of Alibaba Group Holding.
The students scored 73 percent on average, surpassing the organizer’s expectations about what children might be expected to understand about money management, Xu said. Twenty-six percent of the 200 test takers, Asked about managing a New Year’s money gift, 61 percent of the students said they would deposit the money in the bank, while 31 percent said they would give it to their parents for investment. One student said he would lend the money to relatives to buy property －and charge interest.
Not all of the students who were tested had received financial education, although it is studied at the primary school affiliated (附属的) with the University of Shanghai for Science and Technology. Money education there is made into classes to teach students responsibility, teacher Xue Lei said.
“It’s mostly to help the students to manage their pocket money,” Xue said.
Lao Kaisheng, a professor of education at Capital Normal University, shrugged off (耸肩表示蔑视) the test as more commercial than scientific. But it’s clear that modern parents are conscious of money management and want their children to spend－and save－wisely.
63.The recent tests showed that ______________.
A. Shanghai students pay off their own debts
B. Shanghai students focus too much on money
C. most Shanghai students are conscious of money
D. some Shanghai students take part in family investments
64. During the FQ test, the researcher measured ______________.
A. how much Shanghai parents invest for their children
B. how much pocket money Shanghai children get every year
C. where Shanghai Children gain the knowledge of family finances
D. what Shanghai students know about making and managing money A. scored B. lostC. won D. recovered
66. According to teacher Xue, financial education helps students ______________.
A. become more socialB. become more creative
C. become more confident D. become more responsible
D
Confidence Comes From Treating Others As Equals
There’s been recent discussion over Chinese attitudes toward foreigners, caused by another quarrel between a foreigner and a taxi driver. According to the studies described in the Oxford Handbook of Chinese Psychology, Chinese have lower self-confidence compared to Westerners. Yet does the result still apply to the Chinese people today?
Yes and no. For the moment, different attitudes toward foreigners can still be found in China’s society, with some displaying low self-confidence like “Foreigners are awesome (令人敬畏的) , and Western countries are awesome. We should respect them and be as polite as possible, and shouldn’t let them look down on us,” and a few unfriendly opinions such as “Some foreigners are rude and disrespectful, and their level of civility (礼貌) is far behind China.”
Chinese used to be lacking in self-confidence. It might start from the modern history, after the failure in the Opium wars, and the following humiliation (耻辱) of being bullied (被欺负) and brought to their knees by Western guns. And the dark history is still to some extent affecting our mentality (心态) today.
For some time, the Western world represents the best of everything in some Chinese eyes. But our state of mind is gradually changing. When asked “What makes you feel proud of your country?” in school classes in China, answers vary from the World Expo to the Olympic Games, from athletes to astronauts, from the mushrooming skyscrapers to busy metropolises, which have all filled us with growing self-confidence.
While answering the question “Since China is so good today and Chinese people are more confident, why are an increasing number of Chinese emigrating abroad?” Zhang Weiwei, a professor at Fudan University, replied that at least 70 percent of Chinese migrants (移民) become more patriotic (爱国的) after leaving their home country,
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no matter whether they have become a naturalized citizen of another nation or not. Such result and experiences are much more convincing and have better effect than dozens of “patriotic education” classes. There is no reason for us not to be self-confident. We live in the world’s second-largest economy. Chinese net financial assets per capita (人均纯金融资产) and the purchasing power of people have seen a sharp rise, with more and more people starting to purchase works of art, instead of only necessities. These all indicate a rising standard of life and self-confidence. Nevertheless, the point of the changing attitudes toward ourselves or other countries is not realizing other nations are better or worse than China, but treating them like how we treat our fellow Chinese. That is what confidence means, not being condescending (屈尊), not worshiping, but looking each other in the eye with trust and respect. 67. According to the text, what are the Chinese attitudes toward foreigners today? A. They think the foreigners are always rude. B. They have various attitudes toward foreigners. C. They always speak highly of the foreigners. D. They believe foreigners are just common people. 68. Chinese used to lack self-confidence because ___________. A. They thought the foreigners were mysterious. B. They used to think themselves less powerful. C. They once believed foreigners were awesome. D. They were deeply influenced by the dark history. 69. According to Zhang Weiwei, most Chinese migrants___________. A. desire to be a citizen of another nation B. are unwilling to return to their motherland C. develop a stronger love for their home country D. serve as bad examples in patriotic education 70. What’s the main idea of the passage? A. Chinese should be confident and take the foreigners as equals. B. Chinese have enough confidence to make greater progress. C. Chinese have a lower self-confidence faced with foreigners. D. Chinese should be proud of the great achievement of their country. 第二节（共 5 小题；每小题 2 分。共 10 分） E Qualities of being wise Unless you think you're the smartest, who doesn’t want to be smarter?James Gardner has got me an answer on Quora about whether someone’s smart or not. Here are the signs of smart people: Theirs is the gift of a broad mind, constantly fed with the stimulant (兴奋剂) of being interested in what everyone else is doing.
They probably do social media. Not always, but probably. It is not only another chance to listen, but one they use to ensure they can feed their brains with things they otherwise wouldn't have come across.
They know they are usually the smartest person in the room, but they don't spend their time dwelling on that. If they are managers, they will make every effort to get people smarter, more connected and more popular than them in their teams. They also make sure that their smart people get to look smarter than them for the same reason.
They never, ever, under any circumstances, make you look stupid, even though it would be easy to do so. They've learnt through bitter experience that the only thing that happens when you make someone look bad is you look bad yourself.
If you want to be the smart one, let me give you this extra advice from Steve Jobs “Stay hungry. Stay foolish.”
A. Now you should know who the smart people are.
B. Even when things go very badly wrong, they’ll be smiling.
C. They know lots of things other than what they're specialized in.
D. However, being smart is not easy, because one has to possess lots of qualities.
E. They’re not threatened because they know that smartness is working together.
F. Of course I want to be smarter too, so I try to find out who is the real smart guy that maybe I can learn from. G. Instead, they take it as a personal challenge to see if they can make everyone else the smartest person in the
room too.
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篇三：【北京一模】北京市房山区2015--2016年高三第一次模拟及答案
北京市房山区2015--2016年高三第一次模拟
理科综合 生物试题
.1.噬菌体、蓝藻、酵母菌的结构及功能有很大区别，但是它们
A.都含有蛋白质和核酸B.都没有核膜和染色体
C.都可进行有氧呼吸供能 D.都能通过有丝分裂繁殖
2.受体介导的胞吞是一种特殊类型的胞吞作用，主要用于摄取特殊的生物大分子，其过程如右图所示，下列有关叙述不正确的是 ．．．
A.该过程以膜的流动性为基础
B.该过程不能体现细胞膜的选择透过性
C.Na、K等无机盐离子也可通过此方式跨膜转运
D.受体介导的胞吞过程存在细胞识别并需要内部供能
3.肾上腺糖皮质激素是一种可使血糖升高的动物激素，当人体受到刺激后体内会发生如下图所示的过程，下列相关叙述不正确的是 ．．．＋＋
A.肾上腺糖皮质激素与胰高血糖素具有协同作用
B.下丘脑促进肾上腺糖皮质激素和胰高血糖素的分泌调节机理相同
C.下丘脑中既有接受神经递质的受体也有接受肾上腺糖皮质激素的受体
D.肾上腺糖皮质激素的分泌具反馈调节的特点，其含量有助于血糖保持相对稳定
4.调查发现某种蜣螂提高了“生活品位”，不仅吃粪便，还取食蜈蚣、千足虫等。与普通蜣螂相比，这种蜣螂前足较卷曲，便于捕猎，头部较窄而长，便于进食内脏。由此得不出的结论是 ．．．
A.从进化的角度看，这种蜣螂与普通蜣螂存在生殖隔离
B.从生态系统成分看，这种蜣螂既是消费者又是分解者
C.与普通蜣螂相比较，这种蜣螂类型的出现是自然选择的结果
D.与普通蜣螂相比较，这种蜣螂种群的某些基因频率发生了改变
5.下列有关实验条件的叙述，说法正确的是
A.纸层析光合色素时层析的试管必须敞口
B.果酒和果醋发酵的装置均须密封
C.探究激素对生长发育影响的蝌蚪要用蒸馏水培养
D.探究激素对生根影响的枝条可插入土壤中培养
29.（18分）纳米银由于抗菌性能良好而被广泛应用于食物容器、个人护理品等商品中，但其释放到水环境中的风险也引起了研究者的重视。用单细胞小球藻研究纳米银的毒性，开展了如下实验。请回答：
（1）用计数法研究“纳米银”对小球藻生长的抑制情况，结果如图甲，据图可知纳米银在 条件下的毒性更强。实验中需要使用 和显微镜对小球藻进行计数。
（2）用溶氧法进一步探究不同浓度纳米银对小球藻光合作用和呼吸作用的影响，进行了如下实
验，结果如图乙。
①材料用具：不同浓度的纳米银溶液、培养液、小球藻若干、密闭锥形瓶若干、溶氧测定仪、蒸馏水等。
②实验步骤：
第一步：将小球藻平均分为A、B两组，A、B组又各分为________个小组并编号，分别放
入密闭锥形瓶中培养。
第二步：A、B组中的实验组都分别加
第三步：A组全部放在4000lx光照条件下培养，B组全部放在黑暗条件下培养，温度等其他
条件______________，培养10 min后，检测各个锥形瓶中 的变化。
③实验结果：如图乙其中系列1表示水体中的初始溶氧量，则系列________表示A组实验数
据。若不加纳米银，小球藻的总光合作用速率约为mg/L·min溶解氧。
④综上研究，可得出实验结论： 。
30.（16分）小鼠是遗传学研究的常用实验材料，弯曲尾（B）对正常尾（b）为显性。遗传学家针对小鼠的尾形进行了相应的遗传实验。
实验一：
实验二：
遗传学家将一个DNA片段导入到子一代弯曲尾雌鼠的体细胞中，通过克隆技术获得一只转基因正常尾小鼠。（说明：①插入的DNA片段本身不控制具体的性状；小鼠体内存在该DNA片段，B基因不表达，
b基因的表达不受影响。②若小鼠的受精卵无控制尾形的基因，将导致胚胎致死。）
请回答：
（1）控制小鼠尾形的基因位于 染色体上，尾形的遗传符合 定律。
（2）培育该转基因小鼠，需运用 技术，将含有外源DNA的体细胞核与 融合形成重组细胞，经体外培养到早期胚胎再移植到未配种的代孕雌鼠的内发育。
（3）遗传学家认为该DNA片段插入到小鼠染色体上的位置有4种可能（见下图）。为确定具体的插入位置，进行了相应的杂交实验（不考虑交叉互换）。
实验方案：让该转基因正常尾小鼠与非转基因正常尾雄性小鼠杂交，统计子代的表现型种类及比例。
结果与结论：
①若子代正常尾雌鼠：弯曲尾雌鼠：正常尾雄鼠：弯曲尾雄鼠=1:1:1:1，则该DNA片段的插入位置属于第1种可能性。
②若子代 ，则该DNA片段的插入位置属于第2种可能性。
③若子代 ，则该DNA片段的插入位置属于第3种可能性。