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十堰市2007年初中毕业生学业水平调研考试
地 理 试 题
注意事项：
1、考试形式为闭卷标准化考试，考试时限为60分钟，每小题2分，满分为100分。
2、答题时，请用2B铅笔在答题卡上按正确的方式填涂。
3、全卷共50道小题，每小题的四个备用选项只有一个是正确的，请将正确的选项选
出来，并在答题卡相应的位置上将代表正确选项的字母涂黑。
1．某同学突发奇想，要建一栋一年四季昼夜平分的房子，你认为应建在：
A 北极点 B 南极点 C 赤道 D北回归线
2．地球表面积为5.1亿平方千米，根据三分陆地，七分海洋的比例，陆地面积应为：
A 1.179亿平方千米 B 1.279亿平方千米
C 1.379亿平方千米 D 1.479亿平方千米
3．看图一：既在西半球且位于高纬度，
又能看到极光的地点是：
A 甲地 B 乙地
C 丙地 D 丁地
4．看图二：甲乙两地的地形分别是：
A 高原和盆地 B 盆地和高原
C 山顶和盆地 D 高原和山谷
5．我国长江三峡形成的原因是因为流水的：
A 风化作用 B 侵蚀作用
C 搬运作用 D 堆积作用
6．世界上七大洲中，人口自然增长率最高和最低的大洲分别是：
A 亚洲和大洋洲 B 非洲和欧洲 C 非洲和北美洲 D 欧洲和非洲
7．非洲黑人头发卷曲可以起到以下作用中的：
A 形成隔热层保护头部 B 散热凉快
C 为了美观而烫 D 防紫外线灼伤
8．世界2000多种语言中，使用人数最多和范围最广的语言分别是：
A 英语、俄语 B 汉语、英语 C 法语、汉语 D 汉语、俄语
9．用土坯垒墙，屋顶为平顶，反映该地气候：
A 寒冷 B 湿热 C 干燥 D 潮湿
10．下列天气符号中，表示气温低，寒冷天气的是：
A B C D
11．温暖湿润的气流水平运动，遇到山地，被迫抬升，气温下降，水汽凝结，成云致雨，
这种降水形式是：
A 锋面雨 B 地形雨 C 对流雨 D 迎风雨
12．十堰地区昼短夜长的季节是：
A 春季 B 夏季 C 秋季 D 冬季
13．地球上昼夜更替现象产生的根本原因是：
A 地球的公转 B 地球的自转 C 地球是一个球体 D 地球上有五带
14．世界三大热带雨林分布地区是：
①东非高原 ②亚马孙平原 ③马来群岛 ④刚果盆地 ⑤长江中下游平原
A ①②③ B ②③④ C ③④⑤ D ①③④
15．“中国是社会主义国家，美国是资本主义国家”，这是描述国家的：
A 领土面积大小 B 政治体制差异 C 国家人口多少 D 经济发展差异
16．
A 更高更快更强 B 和平友谊进步 C 重在参与 D 和平自由公平
17．亚洲流经国家最多的国际性河流是：
A 湄公河 B 印度河 C 恒河 D 黑龙江
18．全球共划分为24个时区，其中中时区所跨的经度范围是：
A 从本初子午线往西跨15° B 从本初子午线往东跨15°
C 从日界线往东往西各跨7.5° D 从0°往东往西各跨7.5°
19．我国领土最北端是在：
A 黑龙江省的漠河 B 漠河以北黑龙江
C 漠河以北黑龙江主航道的中心线 D 曾母暗沙
20．北回归线自东向西穿过我国的省级行政单位的简称依次是：
A 闽、粤、云、藏 B 台、琼、云、赣
C 台、粤、桂、云 D 台、闽、赣、桂
21．我国东南人口多，西北人口少，人口分布重要的地理界线是：
A 黑河―腾冲线 B 漠河―腾冲线 C 漠河―昆明线 D 黑河―昆明线
22．我国少数民族中，人口最多的少数民族是下列中的
A 藏族 B 壮族 C 维吾尔族 D 布衣族
读图三完成23-----30题。
23．判断和秦岭---淮河一线有关的知识，正确的有：
①此线是季风区和非季风区的界线
②一月平均气温
③是我国南方和北方地区的界线
④800┨等降水量大致经过这一线
⑤耕地类型：以北是水田，以南是旱地
⑥糖料作物：以北是甜菜，以南是甘蔗
A ①②③④ B ②③④⑥
C ③④⑥ D ②③④⑤
银川一中2007届高三年级第三次模拟考试
语 文 试 卷
命题教师：冒文海
班级＿＿＿ 姓名＿＿＿ 学号＿＿
（试卷满分150分，答题时间150分钟）
第Ⅰ卷 阅读(70分)
甲 必考题(45分)
银川一中2007届高三年级第三次模拟考试
英 语 试 卷
命题教师：苏雪静
本试卷分第一卷(选择题)和第二卷(非选择题)两部分。
第 一 卷
注意事项∶
1. 答第一卷前,考生务必将自己的姓名、准考证号、考试科目涂写在答题卡上。
2. 每小题选出答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑。如需改动,用橡皮擦干净后,再选涂其他答案标号。不能答在试卷上。
第一部分：听力（共两节，满分30分）
第一节 （共5小题；每小题1.5分，满分7.5分）
听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。
1. What are the speakers talking about ?
A. A skirt. B. A new dress. C. A T-shirt
2. What does the man mean?
A. He likes playing tennis.
B. He doesn’t like playing tennis.
C. He suggests that the woman find someone else to play tennis with.
3. What can we learn from the conversation?
A. The woman likes the movie.
B. The woman doesn’t like the movie.
C. The woman couldn’t understand the movie.
4. Where will the speakers go tomorrow?
A. The man’s house.
B. The woman’s house.
C. The man’s professor’s house.
5. Where does this conversation probably take place?
A. In the office.
B. In the supermarket.
C. At the airport.
第二节（共15小题；每小题1.5分，满分22. 5分）
听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题给出5秒钟的作答时间。每段对话或独白读两遍。
听第6段材料，回答第6至7题。
6. Where is the woman’s brother?
A. In
B. In
C. In
7. Why can’t the woman decide whether to make the move?
A. Because she has to take care of her parents.
B. Because she has no money.
C. Because she’s in a job which pays high.
听第7段材料，回答第8至10题。
8. What’s the probable relationship between the two speakers?
A. Nurse and patient.
B. Boss and employee.
C. salesgirl and customer.
9. Is the man seriously ill?
A. Yes . B. No. C. It’s not mentioned.
10. When are the visiting hours?
A. From 7am to 8am.
B. From 3am to 7pm.
C. From 9:30 am to 10am.
听第8段材料，回答第11至14题。
11. How many suitcases does the woman bring ?
A. One . B. Two. C. Three.
12. Where will the woman’s seat be ?
A. In the front row.
B. In the center row.
C. In the back row.
13.When is the latest time for the woman to board the plane?
A. 5minutes before the plane takes off.
B. 15minutes before the plane takes off.
C. 50 minutes before the plane takes off.
14. From which gate will the woman board the plane?
A. Gate 5 . B. Gate 15 . C. Gate 25.
听第9段材料，回答第15至17题。
15. How old is the woman?
A. She’s 18 . B. She’s 23 . C. She’s 27 .
16. Hoe old is the man?
A. He’s 23 . B. He’s 27 . C. He’s 28.
17. How can the woman stay young ?looking ?
A. She’s always in happy mood.
B. She always does exercise.
C. She puts on make ?up.
听第10段材料，回答第18至20题。
18. When did the scientist find dinosaur fossils?
A. In 1818. B. In 1842. C. In 2004.
19. What do scientists think dinosaurs are like?
A. Bees . B. Birds . C. Cocks.
20. When did dinosaurs get the present name?
A. In 1842. B. In 1818. C. In 2004.
第二部分:英语知识运用(共两节,满分45分)
第一节：单项填空 (共15小题; 每小题1分, 满分15分)
21.―What’s
―Oh, it is _____
A. a B. the C. an D. /
22. ―Could I hand in my composition after class?
―Of course, you _____.
A. might B. will C. can D. should
23. Find your real interest and go all out to develop abilities that make you _______ from others.
A make out B. stick out C .stand out D. figure out
24.
Advertising slogan for
A. that B. what C. when D. how
25. _________ at the foot of Helan Mountain , the royal tombs of Xixia Mausoleum (西夏王陵)___________ about 900 years ago are known as Oriental (东方的) Pyramids .
A. Standing ; building B. Stand ; building
C. Standing ; built D. Stand ; built
26. In the project we help each other .They need us ________ we need them.
A .as many as B. as much as C. as soon as D. as far as
27. Mrs. Smith is upset because her husband always absorbs himself totally _______ his work and ignores the rest of his family .
A. on B. in C. with D. to
28
A．where B．which C．that D．in where
29 I
found the education system in
A．one B．it C．that D． what
30. _____, you have to work really hard this weekend.
A．With two compositions to write B．Having two compositions written
C．Two compositions haven’t been written D．Writing two compositions
31 The television is without doubt one of the greatest technological wonders that __________ by mankind so far.
A．have been created B．has been created
C．was created D．were created
32 Many people in the region believe that one should eat garlic(大蒜) every day to ________ disease.
A．defend B． protect C．guard D．prevent
33 Thomas Jefferson once said, “I’m a great believer in luck, and I find _________ I work, ________ I have of it.”
A．the harder, the less B．the harder, the more
C．the more hard, the less D．the more hard, the more
34．―Fiona never fails to grasp any chance of promotion.
―She’s a woman of .
A．ambition B．attention C．expectation D．reputation
35. ―Hello, may I have an appointment with the doctor?
―______
A．Sorry, he is busy at the moment. B．Why didn’t you call earlier?
C．Certainly. May I know your name? D．Sorry, he doesn’t want to see you.
第二节: 完形填空 (共 20 小题; 每小题 1.5 分, 满分 30 分)
阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
Mom always helped me get ready for my school dances when I was a teen. She’d polish my shoes ,____36____ my shirt ,pick out the right tie to ___37____ with my blue blazer (夹克)and make sure my hair didn’t ________38___, even after I’d smoothed it with Vitalis(一种发乳).
I’d squirm(扭捏), but secretly I felt as if I had won a million dollars .We’d climb into our Buick and she’d ____39_____ me to dance. “Be nice and have fun ,” was her parting _____40_____.
Two hours later she’d pick me up .My heart would be ___41____from my slow dance with a cute girl in the eighth grade . “Did you have a good time and dance with all the pretty girls ?” Mom ___42____ ask.
I shrugged like ____43_____teenager would . “ Guess so.”
Many years has passed since then ,and I got ______44_____ an even ___45_____ girl .We have two teenagers ,and many times I’ve dropped them off for a school dance (they roll their eyes at my last -minute advice ). Mom is in a assisted ?living home now because of Alzheimer’s (老年性痴呆).I’ m ___46_____for the good care the staff at Sunrise (养护中心的名字)gives her, but I’v often prayed for something special I could do for her there.
The ____47___ came not long ago when Sunrise ___48______ they were having a semi-formal dance for the __49____ .I _____50___ my tuxedo(燕尾服), ____51____my hair with a lot less Vitalis and appeared at her door. I swear that she took out a ___52_____ and worked on my hair. On the dance floor I was able to ____53___her for making me look my best at all those school dances.
“Guess who’s dancing with the prettiest girl?’ I said.
She ________54______the room.” Who?” she asked.
“Me!” I said.
She gave me a ___55_____ and a hug .My mother can still make me feel as if I had won a million dollars.
36.A iron B wash C wear D buy
37. A agree B match C go D meet
38. A stick out B stick to C stick up D stick with
39. A send B walk C ride D drive
40. A warming B advice C idea D words
41. A beating B pounding C jumping D skipping
42. A could B should C would D might
43.A any B some C other D another
44. A married to B married with C marrying with D marrying
45.A cuter B richer C more beautiful D prettier
46. A satisfied B delighted C grateful D cheerful
47. A time B chance C word D luck
48. A broadcast B informed C announced D advertised
49. A patients B nurses C doctors D staff
50. A dressed in B had on C put on D took on
51. A smooth B smoothing C smoothed D to smooth
52. A mirror B ribbon C brush D comb
53. A blame B forgive C thank D praise
54. A looked up B looked out C looked back D looked around
55. A glimpse B glare C stare D smile
第三部分: 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）
阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。
A篇
A thief entered the bedroom of the 30th President of the United States, who met him and helped him escape punishment．
The event happened in the early morning hours in one of the first days when Calvin Coolidge came into power, late in August, 1923．He and his family were living in the same third-floor suite (套房) at the Willard Hotel in Washington that they had occupied several years before．The former President’s wife was still living in the White House．
Coolidge awoke to see a stranger go through his clothes, remove a wallet and a watch chain．
Coolidge spoke, “I wish you wouldn’t take that．”
The thief, gaining his voice, said, “Why?”
“I don’t mean the watch and chain, only the charm (表坠)．Take it near the window and read what is impressed on its back, “ the President said．
The thief read, “Presented to Calvin Coolidge．”
“Are you President Coolidge ? “ he asked．
The President answered, “Yes, and the House of Representatives (众议院) gave me that watch charm．I’m fond of it．It would do you no good．You want money．Let’s talk this over．”
Holding up the wallet, the young man said in a low voice, “I’ll take this and leave everything else．”
Coolidge,
knowing there was ＄
Coolidge decided to offer the man and his roommate two rail tickets back to the college．Then he counted out ＄32 and said it was a loan (借款)．
He then told the young man, “There is a guard in the corridor．” The young man nodded and left through the same window as he had entered．
56．Why did Calvin Coolidge live at the
A．Because the former President was still living in the White House．
B．Because the former First Lady hadn’t left the White House．
C．Because the First Lady liked to live there．
D．Because he liked there．
57．The young man’s roommate went back to the college ______．
A．by air B．by water C．by bus D．by train
58. What is Not the character of President Coolidge?
A. considerate B. kind C. generous D. selfish
59．Which of the following might happen afterwards?
A．The young student repaid the＄32．
B．The thief was put into prison．
C．The President told many reporters the thief’s name．
D．The President ordered the young man to repay the money．
B篇
Thanksgiving Day is the most truly American of the national Holidays in
the
In 1620, the settlers sailed to America on the May flower, seeking a place
where they could have freedom of worship（崇拜）. After a hard two-month voyage they landed
at in icy November, what is now
During their first winter, over half of the settlers died of starvation or diseases. Those who survived began sowing in the first spring.
All summer long they waited for the harvests with great anxiety, knowing
that their lives and the future existence of the colony(殖民地) depended on the
coming harvest. Finally the fields produced a harvest rich beyond expectations.
And therefore it was decided that a day of thanksgiving to the God be fixed.
Years later, President of the
The pattern of the Thanksgiving celebration has never changed through the years. The big family dinner is planned months ahead. On the dinner table, people will find apples, oranges, chestnuts, walnuts and grapes. There will be plum pudding, mince pie, other varieties of food and cranberry juice and squash. The best and most attractive among them are roast turkey and pumpkin pie. They have been the most traditional and favorite food on Thanksgiving Day throughout the years.
Everyone agrees the dinner must be built around roast turkey filled with a bread dressing(填充物) to absorb the tasty juices as it roasts. But as cooking varies with families and with the regions where one lives, it is not easy to reach an agreement on the precise kind of dressing for the royal bird.
Thanksgiving today is, in every sense, a national annual holiday on which Americans of all faiths and backgrounds join in to express their thanks for the year’s abundant harvest and ask for continued blessings.
60. According to the passage, Thanksgiving Day _____________.
A. was first celebrated in
B. falls on the first Thursday of November
C. is now celebrated in a completely different way.
D. is a time for Americans to show respect to settlers.
61. We can Not know from the passage that_______________.
A. Thanksgiving Day is an American national holiday most closely connected with the earliest history of the country
B. The most important foods on Thanksgiving Day are roast turkey and pumpkin pie.
C. Americans of all faiths and backgrounds celebrate Thanksgiving Day.
D. The roast turkey must be eaten with some bread according the tradition.
62. The settlers thought that their good harvest ____________
A. came naturally B. was due to their hard work
C. was linked with good weather D. was got from God
63. The best title of this passage can be _______________.
A. Thanksgiving Day B. The Origin of Thanksgiving Day
C. An Important
C篇
Fruit powered digital clock
Fruit’s not only good to eat, but it can also power this Fruit digital Clock. This clock uses the scientific principles on which modern electrical storage batteries are based. The acid from the fruit helps transmit an electrical flow between two metal poles. The clock is priced at US$14.95. Connecting any fresh fruit or vegetable to the clock will make it work. The fruit is a clean, renewable source of electrical power.
USB vacuum
Do
you know the dirtiest parts of your desk are probably your keyboard and mouse?
Get a USB Mini Vacuum with retractable(可伸缩的)
cable and suck away all that gunk. The
SIM card reader
Making
useful USB 2.0 multi-card readers even handier , this card can also read and
write data to phone SIM cards. It comes with SIM editing software. Download
your phonebook to your computer. If you lose your cell phone, you can store
missing phone numbers in your new one. The
Beer in your ear
The beer barrel(桶)-shaped Naf Naf Hyp MP3 is a musical box that’s capable of playing radio, CDs and cassettes. It’s got all the standard features of the typical clock-radio, but with the relaxing look of a big beer barrel. The Danish product is priced at about US$130 (1,024yuan)
64. If you have 115 yuan , which product can you buy ?
A Fruit powered digital clock B USB vacuum
C SIM card reader D Naf Naf Hyp MP3
65. What statement is not true?
A Fruit and vegetables can be used as batteries to make a clock work .
B USB vacuum can be used to clean room.
C With SIM card reader you won’t lose phone numbers.
D Naf Naf Hyp MP3 can play radio, CDs and cassettes with a looking of a big beer barrel.
66. What does “gunk” mean in the second item?
A dirt B desk C keyboard D mouse
67. The passage is mostly likely a(n )___________.
A entertainment information
B science reports on new high-technology
C introduction of some kinks of musical boxes
D advertisement for new products
D篇
LAST week's decision by the International Astronomical Union (IAU) to strip Pluto(冥王星) of its planetary status, held since its discovery in 1930, has saddened those with a strong love of it.
"Pluto, once the smallest of the Nine Great Planets” writes American science writer Dava Sobel, in her book "The Planets", " is still loved by people, old and young."
Many people felt sorry about Pluto's demotion(降级).
"I just cannot accept this at this time," says Liu Ming, 29, who co-runs a small logistic(物流)company an Shanghai.
"I was taught that 'the Nine Great Planets' formed our solar system since primary school. And now they suddenly decrease the planets to eight. This will take some time for most of us to absorb it," says Liu.
Ordinary people simply feel nostalgic(怀旧), but for some professionals, especially planetarium (天文馆)curators(博物馆馆长)and educators, the change has become a real headache.
The "eight instead of nine" change will affect thousands of planetariums around the world. Schools will also be greatly affected.
In
According to the Ministry of Education, new textbooks with modified(修正的) contents will not be available until next year.
Zhao
Zhiheng, a member of the Astronomy Association from Tianjin, suggested that
primary and middle school teachers be trained in the revised knowledge, and
that the media carry more stories to let people know about the change as soon
as possible.
68.Which word similar to “strip”
in meaning?
A reduce B decrease C cross out D leave out
69. What is the correct order of the events described in the passage?
a New textbooks with Pluto stripped of plants in solar system are released
b Pluto was discovered
c The
International Astronomical
d Outdated textbooks were printed and released to schoolchildren .
A b d a c B b c d a C b d c a D b a c d
70. Which description is Not True ?
A The fact that Pluto has lost its planetary status made some people sad.
B That Pluto is decreased from nine to eight affected thousands of planetariums around the world .
C Textbooks with the “eight instead of nine” change have been released for school children ready to start a new term.
D The media are advised to be used to let people know about the change as soon as possible.
第二节（共5小题；每小题2分，满分10分）
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Are you truly happy? Do you ever know what it means to be happy and what it takes to achieve happiness? __________71____________ The following are a few tips that I follow to create happiness in my life.
*Make a plan for attaining goals that you believe will make you happy. Your moods will very likely increase if you are going after something you value.
* Surround yourself with happy people. It is easy to begin to think negatively(消极地) when you are surrounded by people who think that way.______72_______.
* When something goes wrong, try to figure out a solution instead of being absorbed in self pity. Truly happy people don’t allow setbacks to affect their mood because they know that with a little thought they can turn the circumstances back to their favor.
*________73_________. These few minutes will give you the opportunity to focus on the positive things in your life and will lead you to continuous happiness.
*_________74__________. Whether you treat yourself to lunch ,take a long ,relaxing bath or simply spend a few extra minutes on your appearance , you will be subconsciously (下意识地)putting yourself in a better mood.
* Finding the humor in situations can also lead to happiness. Find a way to make light of a situation that would otherwise make you happy.
*Keeping healthy is another way to achieve happiness.________75________.
A. What makes one person happy may be very different from what makes someone else happy.
B．On the contrary, if you are around people who are happy their emotional state will be infectious.
C．Being overweight or not eating nutritious foods can have a negative effect on your mood.
D．These are important questions for anyone who is seeking happiness to ask themselves.
E．Spend a few minutes each day thinking about the things that make you happy.
F．There are some tips in life that lead to happiness.
G．It’s also important to take some time each day to do something nice for yourself.
第 二 卷
第四部分：写作（共两节，满分35分）?
第一节：短文改错 (共10小题;每小题1分,满分10分)
下面是Oliver写给报社编辑的一封信，请你对其进行修改。文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号（∧），并在此符号下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意： 1、每处错误及其修改均仅限一词；
2、只允许修改10处，多者（从第11处起）不计分。
Dear editor,
I’m a college student and I’ll graduating in half a year. I’m very worried about my future, because find a good job is so much difficult. At the moment, my parents want me to be a teacher, and I don’t like that idea. During my holiday break, I work part-time as a tour guide in my hometown. I liked job very much. But my parents didn’t agree with me. They thought the work was difficulty, even though one could make a lot of money. That is the most important to me is that being a tour guide won’t take me far from home. I always consider what my parents say, but it’s hard for me to take a decision . Could you give me some advices?
Yours
Oliver
第二节：书面表达（满分25分）
美国学生来校参观,由你班负责接待。请根据下面的内容提示，写出100字左右的口头通知稿。切忌逐字翻译，在确保要点齐全的前提下可适当发挥。
参观日期：5月27号（星期日）。
参观人数：约60人。
参观时间：上午9：00至11：00。
具体安排：①
②带领客人参观校园、实验楼、教学楼和学生宿舍。
③10：00 在操场进行篮球友谊赛。
④客人11：00 离校。
注意事项：①着装校服。
②接待客人热情有礼貌。
③用英语交谈。
开头句和结尾句已写好，不记入字数。
Attention please，everyone ！
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
______________________________________________________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
That’s all .Thank you.
2007年银川一中第三次高考模拟测试答案
银川一中2007届高三年级第三次模拟考试
理科综合试卷
命题教师：刘英波、黄彦成、李宏图
常见元素相对原子质量：H―1 C―12 O―16
一.选择题(本题共13小题：每小题6分，共78分。每小题给出的四个选项中，只有一个选项符合题意)
1.下列关于细胞分裂与生物遗传关系的叙述，不正确的是
A.进行减数分裂的动物细胞，基因的分离和自由组合发生在初级精(卵)母细胞中
B.基因的分离、自由组合定律，可以在配子形成过程中同时起作用
C.用秋水仙素处理发菜，可使其染色体加倍
D.原核细胞不进行减数分裂，它的遗传不遵循孟德尔的遗传定律
2.肺炎双球菌转化实验中，将加热杀死的S型细菌与R型细菌相混合后，注射到小鼠体内，在小鼠体内S型、R型细菌含量变化情况如右图所示。下列有关叙述错误的是
A.在死亡的小鼠体内存在着S型、R型两种类型的细菌
B.S型细菌数量从0开始是由于R型细菌基因突变的结果
C.曲线ab段下降的原因是R型细菌被小鼠的免疫系统所消灭
|
8．在0.1mol/L NH3・H2O溶液中存在如下电离平衡：NH3・H2O NH
+OH－。下列叙述正确的是
O2（g）=2CO2（g）+H2O（l ）；△H=+2bkJ・mol―1
12．关于下列各装置图的叙述中，不正确的是（ ）
；一组数据
的方差
（其中
为这组数据的平均数）；独立重复试验概率公式
.