篇一：甘肃省兰州市第一中学2016届高三考前实战演练英语试题(含答案)
甘肃省兰州一中2016届高三冲刺模拟试题
英 语
说明：本试卷分第I卷（选择题）和第II卷（非选择题）两部分。满分120分，考试时间100分钟。答案写在答题卡上，交卷时指教答题卡。
第一部分 阅读理解 （共两节，满分40分）
第一节（共15小题；每小题2分，满分30分）
A
No one knows for sure when advertising first started. It is possible that it grew out of the discovery that some people did certain kinds of work better than others did them. That led to the concept of specialization, which means that people would specialize, or focus, on doing one specific job.
Let’s take a man we’ll call Mr. Fielder, for example. He did everything connected with farming. He planted seeds, tended the fields, and harvested and sold his crops. At the same time, he did many other jobs on the farm. However, he didn’t make the bricks for his house, cut his trees into boards, make the plows (犁), or any of other hundreds of things a farm needs. Instead, he got them from people who specialized in doing each of those things.
Suppose there was another man we shall call Mr. Plowright. Using what he knew about farming and working with iron, Mr. Plowright invented a plow that made farming easier. Mr. Plowright did not really like farming himself and wanted to specialize in making really good plows. Perhaps, he thought, other farmers will trade what they grow for one of my plows.
How did Mr. Plowright let people know what he was doing? Why, he advertised, of course. First he opened a shop and then he put up a sign outside the shop to attract customers. That sign may have been no more than a plow carved into a piece of wood and a simple arrow pointing to the shop door. It was probably all the information people needed to find Mr. Plowright and his really good plows.
Many historians believe that the first outdoor signs were used about five thousand years ago. Even before most people could read, they understood such signs. Shopkeepers would carve into stone, clay, or wood symbols for the products they had for sale.
A medium, in advertising talk, is the way you communicate your message. You might say that the first
medium used in advertising was signs with symbols. The second medium was audio, or sound, although that term is not used exactly in the way we use it today. Originally, just the human voice and maybe some kind of simple instrument, such as a bell, were used to get people’s attention.
A crier, in the historical sense, is not someone who weeps easily. It is someone, probably a man, with a voice loud enough to be heard over the other noises of a city. In ancient Egypt, shopkeepers might hire such a person to spread the news about their products. Often this earliest form of advertising involved a newly arrived ship loaded with goods. Perhaps the crier described the goods, explained where they came from, and praised their quality. His job was, in other words, not too different from a TV or radio commercial in today’s world. (478 words)
1. What probably led to the start of advertisement?
A. The discovery of iron.
B. The specialization of labor. D. The development of farming techniques. C. The appearance of new jobs.
2. To advertise his plows, Mr. Plowright __________.
A. praised his plows in public
B. placed a sign outside the shop D. showed his products to the customers C. hung an arrow pointing to the shop
3. The writer makes up the two stories of Mr. Fielder and Mr. Plowright in order to __________.
A. explain the origin of advertising
C. expose problems in advertising B. predict the future of advertising D. provide suggestions for advertising
4. In ancient Egypt, a crier was probably someone who __________.
A. owned a ship B. had the loudest voice
C. ran a shop selling goods to farmers D. functioned like today’s TV or radio commercial
5. The last two paragraphs are mainly about __________.
A. the history of advertising
B. the benefits of advertising D. the basic design of advertisingC. the early forms of advertising
B
It happened to me recently. I was telling someone how much I had enjoyed reading Barack Obama’s Dreams From My Father and how it had changed my views of our President. A friend I was talking to agreed with me that it was, in his words, ―a brilliantly （精彩地）written book‖. However, he then went on
to talk about Mr. Obama in a way which suggested he had no idea of his background at all. I sensed that I was talking to a book liar.
And it seems that my friend is not the only one. Approximately two thirds of people have lied about reading a book which they haven’t. In the World Book Day’s ―Report on Guilty Secrets‖, Dreams From My Father is at number 9. The report lists ten books, and various authors, which people have lied about reading, and as I’m not one to lie too often (I’d hate to be caught out), I’ll admit here and now that I haven’t read the entire top ten. But I am pleased to say that, unlike 42 percent of people, I have read the book at number one, George Orwell’s 1984. I think it’s really brilliant.
The World Book Day report also has some other interesting information in it. It says that many people lie about having read Jane Austen, Charles Dickens, Fyodor Dostoevsky (I haven’t read him, but haven’t lied about it either) and Herman Melville.
Asked why they lied, the most common reason was to ―impress‖ someone they were speaking to. This could be tricky if the conversation became more in–depth!
But when asked which authors they actually enjoy, people named J. K. Rowling, John Grisham, Sophie Kinsella (ah, the big sellers, in other words). Forty-two percent of people asked admitted they turned to the back of the book to read the end before finishing the story (I’ll come clean: I do this and am astonished that 58 percent said they had never done so).
6. How did the author find his friend a book liar?
A. By judging his manner of speaking.
C. By mentioning a famous name.B. By looking into his background.D. By discussing the book itself.
7. Which of the following is a ―guilty secret‖ according to the World Book Day report?
A. Charles Dickens is very low on the top-ten list.
B. 42% of people pretended to have read 1984.
C. The author admitted having read 9 books.
D. Dreams From My Father is hardly read.
8. By lying about reading, a person hopes to A. control the conversation
C. learn about the bookB. appear knowledgeable D. make more friends
9. What is the author’s attitude to 58% of readers?
A. Favorable. B. Uncaring C. Doubtful
C
We’ve considered several ways of paying to cut inline: hiring line standers, buying tickets from scalpers (票贩子), or purchasing line cutting privileges directly from, say, an airline or an amusement park. Each of these deals replaces the morals of the queue (waiting your turn) with the morals of the market (paying a price for faster service).
Markets and queues—paying and waiting—are two different ways of allocating things, and each is appropriate to different activities. The morals of the queue, ―First come, first served,‖ have an egalitarian(平等主义的) appeal. They tell us to ignore privilege, power, and deep pockets.
The principle seems right on play grounds and at bus stops. But the morals of the queue do not govern all occasions. If I put my house up for sale, I have no duty to accept the first offer that comes along, simply because it’s the first. Selling my house and waiting for a bus are different activities, properly governed by different standards.
Sometimes standards change, and it is unclear which principle should apply. Think of the recorded message you hear, played over and over, as you wait on hold when calling your bank: ―Your call will be answered in the order in which it was received.‖ This is essential for the morals of the queue. It’s as if the company is trying to ease our impatience with fairness.
But don’t take the recorded message too seriously. Today, some people’s calls are answered faster than others. Call center technology enables companies to―score‖ incoming call sand to give faster service to those that come from rich places. You might call this telephonic
jumping.
Of course, markets and queues are not the only ways of
allocating things. Some goods we distribute by merit, others by
still others by chance. However, the tendency of markets to
queues, and other non-market ways of allocating goods is so
common in modern life that we scarcely notice it anymore. It is striking that most of the paid queue-jumping schemes we’ve considered—
at airports and amusement parks, in call centers, doctors offices, and national
D. Friendly queue need, replace
parks—are recent developments, scarcely imaginable three decades ago. The disappearance of the queues in these places may seem an unusual concern, but these are not the only places that markets have entered.
10. According to the author, which of the following seems governed by the principle―First come,first served‖?
A. Taking buses.
B. Buying houses. D. Visiting amusement parks. C. Flying with an airline.
11.The example of the recorded message in Paragraphs 4 and 5 illustrates.
A. the necessity of patience in queuing
C. the uncertainty of allocation principle B. the advantage of modern technology D. the fairness of telephonic services
12.The passage is meant to __________________________.
A. justify paying for faster services B. discuss the morals of allocating things
D. criticize the behavior of queue jumping C. analyze the reason for standing in line
D
The National Gallery
Description:
The National Gallery is the British national art museum built on the north side of Trafalgar Square in London. It houses a diverse collection of more than 2,300 examples of European art ranging from 13th-century religious paintings to more modern ones by Renoir and Van Gogh. The older collections of the gallery are reached through the main entrance while the more modern works in the East Wing are most easily reached from Trafalgar Square by a ground floor entrance
Layout:
The modern Sainsbury Wing on the western side of the building houses 13th- to 15th-century paintings, and artists include Duccio, Uccello, Van Eyck, Lippi, Mantegna, Botticelli and Memling.
The main West Wing houses 16th-century paintings, and artists include Leonardo da Vinci, Cranach, Michelangelo, Raphael, Bruegel, Bronzino, Titan and Veronese.
The North Wing houses 17th-century paintings, and artists include Caravaggio, Rubens, Poussin, Van Dyck, Velazquez, Claude and Vermeer.
The East Wing houses 18th- to early 20th-century paintings, and artists include Canaletto, Goya,
兰州一中2015高三年级5月自我完善卷
英 语
京翰高考网 --http://gaokao.zgjhjy.com/
本试卷分为第I卷（选择题卷）和第II卷（非选择题卷）。满分120分，考试时间100分钟。
第I卷
第一部分 阅读理解 （共两节，满分40分）
第一节 （共15小题，每题2分，满分30分）
阅读下列短文，从每题所给的A,B,C,D四个选项中选出最佳答案。
A
Waiting anxiously to be reunited with the son he had not seen for 13 years, Phil Baker took a walk along the beach with his wife Lyn to relax himself. His boy Benji, 21, was finally back to Australia after living most of his life in the UK, half a world away from his dad.
As he looked out at the ocean, wondering how his son might have changed over the years, Phil saw some people on the kayaks (小艇) in trouble on the water. Without hesitation, he dived into the sea to help. And as he carried a stricken young man trembling and semi-conscious to the shore, he realized the young man was his long-lost son.
“I looked at his face, and something occurred to me,” says Phil. “Those brown eyes were very familiar.” Although Phil had seen just a few photos of his son since the boy was eight years old, he recognized him at once.
It would be reasonable to suppose it was a father?s instinct that Phil to help ---- but at the moment he dived into the water to go to the aid of the struggling group, he only thought he was helping a stranger in trouble.
He said, “Two people were desperately paddling on one of the kayaks and it seemed like someone fell into the water. I told Lyn, ?Something is not right; I?m going to help.? ”
“l took off my T-shirt and threw my keys on the sand. Diving into the water, I saw there were two instructors on board and a man lying in the water. He was shaking violently. Linking arms with one instructor, I helped to carry the man out of the water. He was drifting in and out of consciousness and his hands and feet were blue.”
Then Phil looked into the boy's eyes and wept as he realized the stricken stranger was his own son. Phil recalled, “I asked the instructor, ?what?s his name?' ” He replied, ?Benji?. In an instant, I knew that stranger was my boy. I checked his breathing and pulse and said, “It's me, your dad. You're going to be OK.”
Benji tells how it felt to be saved by his long-lost dad. “All I remember was waking up on the beach and seeing my dad there,” he says, “And I recognized his face straight away.”
1. What can we know about the Bakers?
A. Phil and his wife lived in Australia.
B. Phil knew he was going to save his son.
C. Benji was going to see off his son on the beach.
D. Benji and Phil were separated because of Benji?s education.
2. In Paragraph 4, the underlined word” incited" can be replaced by"__________"
A. causedB. remindedC. forced D. advised
3. From the passage, it can be inferred that ____________.
A. Phil is willing to help people in need
B. Benji drowned because he could not swim
C. Benji had the same brown eyes as his father
D. the instructors told Phil that Benji was his son
4. Which of the following shows the right order of the story?
a. Phil and his wife waited for their son on the beach.
b. Benji left his father at the age of eight.
c. Phil saved a boy and recognized he was his own son.
d. Benji recognized his father Phil.
e. Phil saw some people were in trouble and decided to help.
A. a, b, c, e, dB. b, a, e, c, d C. a, b, e, d, c D. b, e, a, d, c
B
The world's first hamburger doesn't come from where you think it comes from. It wasn't invented in the United States, and it didn't originate in Germany. No, the world's first hamburger comes from China.
If you're scratching your head right now, you're not alone. But Chinese hamburgers are very real and they definitely predate the hamburgers we call our own in the U.S. Known as rou jia mo, which translates to "meat burger" or "meat sandwich", they consist of chopped meat inside a pita-like and they've been around since the Qin Dynasty, from about 221 BC to 207 BC. Despite the differences between this Chinese street food and our American-style burgers, the rou jia mo has been called the world's first hamburger.
The rou jia mo originated in the Shanxi Province of China, and is now eaten all over the country. It's typically prepared and eaten on the street. The dough for the bun, or mo, consists of a simple mixture of wheat flour, water and maybe yeast. Of course recipes may vary, but this basic equation makes for a chewy and subtle pillow for the delicious filling. While the mo is traditionally baked in a clay oven, today it's often fried in a pan. They may look a little like Chinese steamed buns or baozi, but the dough for those are, of course, steamed, not baked or fried.
The meat filling might consist of chopped pork, beef, lamb or chicken that has been stewed
with a variety of spices, like ginger, cloves, coriander and star anise. You might also find herbs like cilantro or greens like lettuce garnishing the sandwich.
5. What does the underlined word mean?
A. noodleB. food C. bread D. beverage
6. Which of the following is TRUE?
A. The mo people eat today is baked in a clay oven.
B. The world's first hamburger which was originated in the Shanxi Province of China ispopular around the world.
C. The rou jia mo has a history of more than 2200 years.
D. The rou jia mo and American-style burgers share a similar cooking process.
7. What would be the best title for the passage?
A. Delicious hamburger
B. How to cook hamburger
C. Chinese invented hamburger
D. History of hamburger
C
Singles' Day ---- the Chinese opposite of Valentine?s Day has turned into a massive online shopping event. It is a day when single people are supposed to buy themselves presents. But there are sociological reasons behind China's “celebration” of single life. And the imbalance could have big consequences for the country.
There were 34 million more men than women in China in 2011. Part of that is natural – usually there are 105 boys born for every 100 girls. But the Chinese gender ratio (性别比例) at birth is much more obvious. It was 116 boys to 100 girls in 2012. The one child policy is largely to blame. Brought in to limit population expansion, the policy allows only one child per family. But because male children are seen as more valuable, as well as more likely to support their parents in old age, some parents choose to have a son over a daughter. The result is that large numbers of men will likely never get married. In fact, one study has predicted that by 2030, 1 in 5 Chinese men in their 30s will never have married, while another states that 94% of unmarried people in China are men.
Traditionally, China has seen high levels of marriage, usually among the young. Besides, the increased education and career opportunities for women have meant that marriages are happening later. It is also traditional that women often marry men of a higher socioeconomic status than themselves. So women at the top and men at the bottom find themselves alone. One study has even suggested a link between an imbalanced gender ratio and growth in violent crime in the country.
Singles ' Day can?t solve all the problems China?s singles face. Indeed, it is possible that it is causing even more problems, as men resort to increasingly risky lines of work to increase their chances of gaining money and thus a wife. I am worried that as money starts to overcome romance, there is evidence that China ' s marriage market is increasingly materialistic.
8. In 2012, if 50 girls were born, how many boys were probably born?
A. 50. B. 52. C. 58.D. 60.
9. What made women in China get married late?
A. Their support of the government?s late marriage policy.
B. Their higher education level and more work chances.
C. That they expect to enjoy their single time when young.
D. That there are too many excellent young men to choose from.
10. What?s the writer?s attitude to the imbalance gender ratio in China?
A. Optimistic B. ConcernedC. Indifferent D. Unknown
11. We can learn from the passage that A. Singles' Day is celebrated all over the world.
B. by 2030, 1 in 5 Chinese women in their 30s will be out of marriage.
C. an imbalanced gender ratio is related to the growth in violent crime.
D. Singles' Day will solve all the problems China?s singles face.
D
From July to October every year, about a quarter of the world?s blue whales feed in the Pacific Ocean off the coast of California. But the whales currently face a major threat in their favorite feeding area. Ships carrying cargo (货物）sail in the same area at the same time. All too often, the whales? paths and the ships? travel lines overlap (重叠)，and a ship will hit a whale.
According to a new study, these ship strikes have become a serious threat to the overall population of the world?s blue whales. Only about 10,000 of the creatures still exist worldwide. Blue whales are the largest known animals ever to live on Earth. Even so, if hit by a container ship, a blue whale will likely die from its injuries.
In 2007 alone, large ships killed five blue whales in the waters off San Francisco and Los Angeles, California. The National Oceanic and Atmospheric Administration (NOAA) says that because there are so few whales already, losing three to five from the California whale population every year is a significant loss. “The estimated population of blue whales in this part of the Pacific is 2,500”, says Sean Hastings, a NOAA analyst. “So every whale counts toward this species moving off the endangered-species list.”
Now, marine scientists must figure out how to protect the whales from the giant container ships. One very simple program is already under way in the Santa Barbara Channel, a waterway that separates mainland California from the nearby Channel Islands.
The Channel Islands National Marine Sanctuary has asked large container ships passing through the area to voluntarily slow down. Sailing slower will allow the ships? crew (船员）more time to change course before hitting a whale.
Several of the world?s largest shipping lines are set to participate in the new program. For every ship that passes through the Santa Barbara Channel at or below the reduced speed of 12 knots (海里 / 小时），the company that owns the ship will be paid $2,500.
12. From Paragraph 1, we can know that_____.
A. people intend to illegally hunt blue whales for money
B. large ships often carrying goods may pollute the sea
C. there is fewer fish in blue whales? favorite feeding area
D. the container ships may hit the blue whales frequently
13. Why is the death of several whales regarded as significant loss to the world's blue whales?
A. Because other blue whales will be scared away.
B. Because the number of the blue whales is so small.
C. Because blue whales are the largest animals in the world.
D. Because many blue whales get killed throughout the year.
14. According to Sean Hastings，it?s inferred that A. the blue whales are still on the endangered-species list.
B. the number of the blue whales is decreasing sharply.
C. most of the world?s blue whales live in the Pacific Ocean.
D. blue whales are often disturbed by other endangered creatures.
15. What are the last three paragraphs mainly about?
A. The basic responsibility of a sailor.
B. The world?s largest shipping lines.
C. Measures to protect the blue whales.
D. Ways to slow down the speed of the ships.
第二节 （共5小题，每题2分，满分10分）
根据短文内容，选出最佳选项，选项中有两项为多余选项。
American black bears appear in a variety of colors despite their name. In the eastern part of their range, most of these bears have shiny black fur, but in the west they grow brown, red, or even yellow coats. 一窝幼崽）, both brown and black furred bears may be born.
Black bears are the smallest of all American bears, ranging in length from five to six feet, weighing from three hundred to five hundred pounds.
However, if attacked, most can climb trees and cover ground at great speeds. When angry or frightened, they are formidable enemies.
Black bears feed on leaves, herbs, fruit, berries, insects, fish, and even larger animals. Unlike squirrels, woodchucks, and many other woodland animals, bears do not actually hibernate. Although the bear does not eat during the winter months, sustaining itself from body fat, its temperature remains almost normal, and it breathes regularly four or five times per minute.
They prefer to live in caves. Baby black bears are born in January or February after a gestation(怀孕) period of six to nine months, and they stay with their mother until they are fully grown or about one and a half years old. Black bears can live as long as thirty years in the wild, and even longer in some nature reserves.
A. To the north, the black bear is actually gray or white in color.
B. Black bears mate all year round.
篇三：甘肃省 兰州市兰州一中2014—2015—1学期期中考试试题(高一)生物
甘肃省兰州市一中2014—2015上学期期中考试试题高一生物试题
说明：本试卷分第Ⅰ卷（选择题）和第Ⅱ卷）（非选择题）两部分。满分100分，考试时间100分钟。
第I卷 （共75分）
一、单选题（每小题1分，共50分。每小题只有一个正确选项） 1．蓝藻是原核生物,过去也把它作为一类植物,这是因为它具有
A．蛋白质 B．核酸C．糖类 D．光合作用色素 ２．下列关于细胞中化学元素的叙述，正确的是 A．细胞中一种元素的作用能被其他元素替代 B．细胞中的脱氧核苷酸和脂肪酸都不含有氮元素 C．主动运输机制有助于维持细胞内元素组成的相对稳定 D．细胞中的微量元素因含量极少而不如大量元素重要 ３．下列有关组成生物体化学元素的论述，正确的是
A．组成生物体和组成无机自然界的化学元素中，碳元素的含量最多 B．人、动物与植物所含的化学元素的种类差异很大 C．组成生物体的化学元素在无机自然界都可以找到 D．不同生物体内各种化学元素的含量比例基本相似
４．缺乏有氧氧化酶系统的成熟红细胞，其直接依赖的能源物质为
A．蛋白质 B．葡萄糖 C．乳酸 D．脂肪
５．临床通过检测尿液中一定时间内的含氮量,可粗略地估算下列哪一营养物质在该段时间内的氧化分解量
A．蛋白质 B．脂肪 C．糖D．维生素D ６．合成下列物质需要供给氮源的是
A. 糖原 B. 脂肪 C. 淀粉 D. 核酸
７．右图是某动物组织的一个细胞，其细胞质内含有的糖类和核酸主要是 A．糖原和RNA B．糖原和DNA C．淀粉和RNA D．淀粉和DNA ８．哺乳动物的性腺细胞合成和分泌的性激素属于
A．核酸 B． 蛋白质 C．糖类 D．脂类
9．人体免疫球蛋白中，IgG由4条肽链构成，共有764个氨基酸，则该蛋白质分子中至少含有游离的氨基和羧基数分别是 A．746和764 C．762和762
B．760和760 D．4和4
10．谷氨酸的R基为C3H5O2，1分子谷氨酸含有的C、H、O、N原子数依次是 A．5、9、4、1 C．5、8、4、1
B．4、8、5、1 D．4、9、4、1
11．下列物质中都含有氮元素的是 ①核糖核酸A．①② C．②③
②糖原B．①③ D．③④
③胰岛素
④淀粉
12．某蛋白质由n条肽链组成，氨基酸的平均分子量为a，该蛋白质由b个氨基酸组成，则该蛋白质的分子量约为 A．ab?b?18n C．(b?a)?18
B．ab?b
D．ab?(b?n)?18
13．属于生物体内微量元素的是 A．P B．S
C．K
D．Mn
14.检验苹果中是否有还原性糖，可选用的试剂是 A.碘液 B.苏丹Ⅲ染液C.双缩脲试剂 D.斐林试剂
15．植物从土壤中吸收的氮元素，可以用来合成下列哪种物质 A．葡萄糖C．脂肪
B．淀粉 D．蛋白质
16．下列物质中，动物细胞内不只有的是
A．葡萄糖B．糖元 C．核糖 D．纤维素
17．甲状腺激素是一种含碘的氨基酸衍生物，研究甲状腺功能时应用的放射性同位素是B
14131
A．C B．I
9015
C．ND．Sr
18．细胞内储存遗传信息的物质是 A．DNA B．脂肪 C．蛋白质D．氨基酸 19．组成DNA的结构的基本成分是
①核糖 ②脱氧核糖 ③磷酸 ④腺嘌呤、鸟嘌呤、胞嘧啶⑤胸腺嘧啶 ⑥尿嘧啶 A．①③④⑤ B．①②④⑥C．②③④⑤ D．②③④⑥
20．某22肽被水解成1个4肽，2个3肽，2个6肽，则这些短肽的氨基总数的最小值及肽键总数依次是
A．6 18B．5 18 C．5 17D．6 17
21．取3支试管甲、乙、丙，分别加入等量的淀粉液，然后按下图加入等量的浓度不同的淀粉酶溶液和蒸馏水，45℃水浴保温5分钟，立即在3支试管中加入等量斐林试剂并煮沸2分钟，摇匀观察试管中的颜色。结果是
A．甲呈蓝色，乙呈砖红色，丙呈无色 B．甲呈无色，乙呈砖红色，丙呈蓝色 C．甲、乙皆呈蓝色，丙呈砖红色 D．甲呈浅砖红色，乙呈砖红色，丙呈蓝色
1%淀粉酶 5%淀粉酶淀粉液
蒸馏水 淀粉液
甲 乙丙
22．生物组织中还原糖、脂肪和蛋白质三种有机物的鉴定实验中，以下操作错误的是 A．可溶性还原糖的鉴定，可用酒精灯直接加热产生砖红色沉淀 B．只有脂肪的鉴定需要使用显微镜 C．用双缩脲试剂检测蛋白质不需要加热 D．使用斐林试剂和双缩脲试剂最好是现配现用
23．纤维素被称为第七营养素．食物中的纤维素虽然不能为人体提供能量，但能促进肠道蠕动、吸附排出有害物质．从纤维素的化学成分看，它是一种 A．二糖 B．多糖 C．氨基酸
D．脂肪
24．下列不属于植物体内蛋白质功能的是
A．构成细胞膜的主要成分 B．催化细胞内化学反应的酶
C．供给细胞代谢的主要能源物质 D．根细胞吸收矿质元素的载体 25．下列有关生物体化学成分的叙述正确的是
A．精瘦肉中含量最多的是蛋白质B．组成细胞壁主要成分的单体是氨基酸 C．T2噬菌体的遗传物质含有硫元素 D．与精子形成相关的雄激素属于脂质
16．免疫球蛋白IgG的结构示意图如右。其中—s—s表示连接两条相邻肽链的二硫链。若该lgG由m个氨基酸构成，则该lgG有肽键数
A．m个B．（m+1）个 C．（m—2）个 D．（m—4）个
27．某蛋白质由124个氨基酸组成，其中有8个—SH，在肽链形成空间结构（如图6）时，生成4个二硫键（—S—S—），若氨基酸平均分子量为125，则该蛋白质的分子量约为
A．13278B．13286C．13294D．15500
28．如果图1表示纤维素的结构组成方式，那么符合图2所示结构组成方式的是 ①核酸 ②多肽 ③淀粉
A．①② B．②③ C．①③ D．①②③
29．图l表示细胞中一种常见的水解反应，下列化合物能发生此种反应的有
①多肽 ②淀粉 ③纤维素 ④脂肪 A．①②③ B．①②④C．①③④ D．②③④ 30．生物体中的某种肽酶可水解肽链末端的肽键，导致 A．蛋白质分解为多肽链B．多肽链分解为若干短肽 C．多肽链分解为氨基酸D．氨基酸分解为氨基和碳链化合物
31．若以鸡蛋蛋白液为材料进行蛋白质鉴定实验，发现蛋白液与双缩脲试剂发生反应后会粘固在试管壁上。下列关于这一现象形成原因的描述中正确的是
A．鸡蛋蛋白液稀释不够，搅拌不匀 B．只添加了双缩脲试剂A，未添加双缩脲试剂B C．鸡蛋蛋白液不是合适的实验材料 D．蛋白液与双缩脲试剂的反应时间不够长 32．下列健康人的4种液体样本中，能与双缩脲试剂发生紫色颜色反应的是 ①尿液 A．①③ C．②③
②胃液
③汗液
④唾液
B．①④ D．②④
33．现有氨基酸800个，其中氨基总数为810个，羧基总数为808个，则由这些氨基酸合成的含有2条肽链的蛋白质共有肽键、氨基和羧基的数目依次分别为 A．798、2和2 B．798、12和10C．799、1和1 D．799、11和9 34．关于生物体内组成蛋白质的氨基酸的叙述，错误的是 ．．A．分子量最大的氨基酸是甘氨酸 B．有些氨基酸不能在人体细胞中合成 C．氨基酸分子之间通过脱水缩合形成肽键 D．不同氨基酸之间的差异是由R基引起的
35．某同学以新鲜洋葱鳞片叶内表皮为材料，经不同处理和染色剂染色，用高倍显微镜观察。下列描述正确的是
《甘肃兰州一中校歌》出自：百味书屋
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