搜索
2009届新课标物理考点预测（6）
动量
一、考点介绍
本考点是高考的必考内容，题型全面，选择题主要考查动量的矢量性，辨析“动量和动能”、“冲量与功”的基本概念；常设置一个瞬间碰撞的情景，用动量定理求变力的冲量；或求出平均力；或用动量守恒定律来判定在碰撞后的各个物体运动状态的可能值；计算题主要考查综合运用牛顿定律、能量守恒、动量守恒解题的能力；一般计算题具有过程错综复杂，图景“扑朔迷离”、条件隐晦难辨,知识覆盖广的特点,经常是高考的压轴题.
致远中学2008―2009学年度第二学期期中考试试卷
高 一 化 学
命题：刘须军
本卷可能用到的相对原子质量:
H
本试卷分第一部分（选择题）和第二部分（非选择题），满分100分，考试时间90分钟。
第一部分 选择题（共54分）
单项选择题（本题包括18小题，每小题3分，共54分。每题只有一个选项符合题意）
1.不久前，我国科学家首次合成了三种新核素，其中一种新核素是
C。关于C，下
列说法正确的是：
A.是一种新元素 B.该原子核内的中子与质子之差为2
C.原子核内有12个中子 D.核外电子数为14
2.下列表达方式错误的是
A.甲烷的电子式
B.氟化钠的电子式
C.氯原子的结构示意图：
D.CO2分子的结构式：O=C=O
3.现有如下各说法：①元素种类由原子核内质子数决定；②全部由非金属元素形成的化合
物一定为共价化合物；③离子键是阳离子、阴离子之间的相互吸引作用；④同素异形体
在一定条件下的转化为化学变化；⑤CCl4晶体和NH4Cl晶体中所含的化学键类型完全
相同。上述各种说法正确的是
A.仅①④正确 B.①③④正确
C.④⑤正确，其他不正确 D.都不正确
4.对化学反应限度的叙述，错误的是
A.任何可逆反应都有一定的限度 B.化学反应的限度是不可改变的
C.化学反应的限度与时间的长短无关 D.化学反应达到限度时，正逆反应速率相等
5.A、B、C、D、E是同一周期的五种主族元素，A和B的最高价氧化物对应的水化物均
呈碱性，且碱性B＞A，C和D的气态氢化物的稳定性C＞D；E的简单离子是这五种
元素中离子半径最小的元素，则它们的原子序数由大到小的顺序是
A.B、A、D、C、E B.C、D、E、B、A
C.A、B、C、D、E D.C、D、E、A、B
6.下列化合物不能通过化合反应获得的是
A. Na2O2 B.FeCl
7.下列分子中，所有原子都满足最外层为8电子结构的是
A.SO2
B.NCl
8.当周围空间不慎有大量氯气溢出时，可以用浸有某物质一定浓度溶液的毛巾捂住鼻子，最适宜采用的物质是
A.NaCl B.NH3•H2O C. KBr D. Na2CO3
9.下列说法中，正确的是
A.原电池是利用氧化还原反应将化学能转换为电能的装置
B.由于生铁中含碳，所以比纯铁耐腐蚀
C.在原电池中，电子从正极流向负极
D.在电解池中，阳极极上发生还原反应，阴极上发生氧化反应
10.在给定条件下，下列加点的物质在化学反应中能被完全消耗的是
A.用50mL 8 mol/L 浓盐酸与
B.标准状况下，将
C.向100mL 0.5 mol/L的硫酸中加入
D.在5×107Pa、
11.根据右图提供的信息，下列所得结论不正确的是
A.该反应为吸热反应
B.该反应一定有能量转化成了化学能
C.反应物比生成物稳定
D.因为生成物的总能量高于反应物的总能量，所以该反应不需要加热
12.右图为铜-锌-稀硫酸构成的原电池示意图，下列说法错误的是
A.锌片为负极，且锌片逐渐溶解
B.铜为正极，铜不易失电子而受到保护
C.电子由铜片通过导线流向锌片
D.铜的表面有气泡产生
13.X元素的最高价氧化物对应的水化物的化学式为 HXO3，则它对应的气态氢化物的化
学式为
A.H3X B.H2X C.XH3 D.XH4
14.下列反应的离子方程式书写错误的是
A.向小苏打溶液中加入硫酸溶液：HCO3－＋H+ ==== CO2↑＋ H2O
B.向氯化铝溶液中加入过量氢氧化钠溶液：Al3+ ＋4OH－ ==== AlO2－+ 2H2O
C.将过氧化钠投入水中：2Na2O2＋2H2O ==== 4OH－ ＋4Na＋＋O2↑
D.氢氧化钡与稀硫酸反应： H+ ＋OH－==== H2O
15.在一个体积固定的密闭容器中发生反应：H2(g)+ I2(g) 
2HI(g)，该反应达到平衡时的标志是
A.H2、I2、HI的浓度相等
B.1个I―I键断裂的同时，有2个H―I键形成
C.混合气体的颜色不再改变 D.混合气体密度恒定不变
16.一定温度下，容器内某一反应中M、N的物质的量随反应时间变化的曲线如右图，下列表述中正确的是
A.该反应的化学方程式为： 
N
B.0～t1时间段内，平均反应速率v(N)?v(M)=2?1
C.t2时，正逆反应速率相等，达到平衡
D.t3时，正反应速率大于逆反应速率
17.已知可逆反应2SO2 + O2 
2SO3，当生成2 mol SO3时放出热量为Q，现将
1 mol SO2和0.5 mol O2在相同条件下反应充分生成SO3放出的热量为Q1，则
A. Q1 = Q B.Q1 < Q C.2Q1 > Q D.无法判断
18.足量铜与一定量浓硝酸反应，得到硝酸铜溶液和NO2、N2O4、NO的混合气体，这些气体与
A
第二部分 非选择题（共46分）
19.（10分）某化学课外兴趣小组为探究铜跟浓硫酸的反应情况，用下图所示装置进行有关实验。
回答下列问题：
（1）装置A中发生的化学反应方程式为_____________________________________。
（2）装置D中试管口放置的棉花中应浸一种液体，这种液体是____ _______ _____，其
作用是 。
（3）装置B的作用是贮存多余的气体。当D处有明显的现象后，关闭旋塞K，移去酒精灯，但由于余热的作用，A处仍有气体产生，此时B中的现象是 ，B中放置的液体可以是(填字母) 。
a.水 b.H2O2溶液 c.新制氯水 d.饱和NaHSO3溶液
（4）实验中，取一定质量的铜片和一定体积18 mol・L－1的浓硫酸放在圆底烧瓶中共热，直到反应完毕，发现烧瓶中还有铜片剩余，该小组学生根据所学的化学知识认为还有一定量的硫酸剩余。下列药品中能用来证明反应结束后的烧瓶中确有余酸的是________(填字母)。
a.铁粉 b.BaCl2溶液 c.用硝酸酸化的硝酸钡溶液 d.Na2CO3溶液
20.（10分）下列框图表示各有关物质之间的转化关系，所有反应物、生成物及溶液中的水均未标出。已知常温下D、E、F、H、L、N均为气体；A的焰色反应呈黄色；向B的溶液中滴加KSCN溶液，无明显变化；1molB隔绝空气分解得到F、G、H三种氧化物，其物质的量均为1mol；F是无色无味、易与血红蛋白结合的有毒物质；J是现代社会中应用最广泛的金属单质。
 |
请回答下列题：
（1）B中组成元素的原子个数比为 ；N的电子式 ;
（2）电解A溶液的离子方程式为 _________ ;
（3）新生成的M与空气接触时的现象：__________________________________,
该反应的化学方程式为_____________________________________________;
（4）C、D反应的离子方程式为__________________________________________;
21.（10分）（1）根据元素周期表比较下列性质（用“＞”、“=”、“＜”填空）
①半径 P F ②酸性 H3PO4 H2SO4 ③碱性 Mg(OH)2 Al(OH)3
④稳定性 H2S H2O ⑤还原性H2S HCl ⑥氧化性 Cl2 Br2
（2）下列物质中：①Ar ②CO2 ③SiO2 ④NaOH ⑤K2S ⑥Cl2 ⑦NaF中，只含共价键的是_____________；只含离子键的是________________；既含共价键又含离子键的是________________。(填序号)
(3) 已知：100kPa时，1 mol石墨转化为1 mol金刚石要吸收1.895 kJ能量，说明石墨比金刚石 （填 “稳定”、“不稳定”）
22.（8分）化学反应可视为旧键断裂和新键形成的过程。现提供H2燃烧反应中有关物质的化学键键能： H―H：Q1kJ/
mol、H―O：Q3kJ/
mol、O2分子内氧原子间的键能为Q2kJ/mol。
（1）请根据上述数据，在下图中标注的数字处，填出能量变化的数值或根据箭头的指向填写能量变化是“放出”热量还是“吸收”热量。
（2）请写出1molH2燃烧生成液态水的热化学反应方程式：
。
23.（8分）向一个容积为
2SO3(g) ，经2 s后达到平衡状态，测得SO2的物质的量是1.5mol，
计算：（1）以O2表示的该反应的速率；
（2）平衡时SO3的物质的量浓度。
2008―2009学年度第二学期期中考试试卷
高一化学答卷纸
选择题部分
题号
1
2
3
4
5
6
7
8
9
答案
题号
10
11
12
13
14
15
16
17
18
答案
非选择题部分
19.（10分）
（1）方程式为__________________________________________。
（2）液体是___________，作用是 ______ 。
（3）B中现象是 ___ ____________________ ，B中是(填字母) 。
（4）证明反应结束后的烧瓶中确有余酸的是________(填字母)。
20.（8分）
（1）B中原子个数比为_______________________；N的电子式_______________;
（2）电解A溶液的离子方程式为______________________________________;
（3）M与空气接触时现象：__________________________________________,
化学方程式为__________________________________________________;
（4）C、D反应离子方程式为_________________________________________;
（5）F与G反应化学方程式为________________________________________。
21.（10分）
（1）①__________ ②___________ ③__________
④__________ ⑤___________ ⑥__________
（2）只含共价键的是_____________；只含离子键的是________________；
既含共价键又含离子键的是________________。(填序号)
(3) 石墨比金刚石 （填 “稳定”、“不稳定”）
22.（8分）
（1）①__________________ ②_____________________
③__________________ ④_____________________ ⑤_______________
（2）请写出1molH2燃烧生成液态水的热化学反应方程式：
。
23. (8分)
陕西师大附中2007―2008学年度第一学期
期末考试八年级英语试题
命题人：王娟 审题人：安文娟
第I卷（选择题 共55分）
听力部分
I、听句子，选答案（5分）
本题共有5个小题，每个小题你将听到一句话，读两遍，请从所给的三个选项中选出一个最恰当的答语。
1. A. Yes, I think so.
B. Thank you.
C. Nice to meet you, too!
2. A. Good idea.
B. Yes, please.
C. Never mind.
3. A. Sorry, I can’t
B. Thank you for your help.
C. Yes, I’d love to.
4. A. The same to you.
B. Have a good time.
C. You’re so kind.
5. A. You’re welcome.
B. That’s right.
C. I’m afraid not.
Ⅱ、听对话，选答案（5分）
本题共有5个小题，每个小题有一段对话和一个问题，读两遍，请根据每段对话的内容和后面的问题，从所给的三个选项中选出最恰当的一项。
6. A. To go shopping.
B. To do some cleaning.
C. To go skating.
7. A. By bus.
B. By bike.
C. On foot.
8. A. A doctor.
B. A teacher.
C. A nurse.
9. A. Moving
B. Interesting.
C. Exciting.
10. A. 30 dollars.
B. 60 dollars.
C. 120 dollars.
Ⅲ、听短文，选答案（5分）
本题你将听到一篇短文，读两遍，请从每个小题的三个选项中，选出正确答案。
11. Why does Li Lei have to get up early every morning?
A. Because he wants to catch the early bus.
B. Because he wants to be the first to get to school.
C. Because his home is far from school.
12. How does Li Lei go to school every day?
A. He walks to school.
B. He runs to school.
C. He rides a bike to school.
13. Li Lei’s family spends much money____________.
A. on his mother’s medicine B. on his school things C. on a new bike
14. Li Lei ran _________ in the boys’1,500 metres in his school.
A. fast B. faster C. fastest
15. What makes Li Lei become stronger and stronger?
A. Growing up. B. Keeping running to school. C. His father’s care.
笔 试 部 分
I、语言知识（共10小题，计10分）
本题共有10个小题，请从每个小题的四个选项中，选出最佳答案。
16. I can’t pay for the dictionary because I have _______ monty with me.
A. few B. a few C. little D. a little
17. Coral is _______ than ______ girl in our class.
A. funny; any B. funnier; any other
C. funnier; any one D. funniest; any
18. ― Would you like to go to the movies with me this weekend?
― ______, but there is too much work to do.
A. I’d love to B. With pleasure C. That depends D. That sounds well
19. Manuel is going to be an actor when he ____________.
A. will grow up B. grows up C. grow up D. grew up
20. He_______ a singer when he was twenty.
A. becomes B. becoming C. become D. became
21. It’s such an ________ film that all the students are _______ in it.
A. intereseing; interesting B. interested; interested
C. interesting; interested D. interested; interesting
22. ― Could you please clean the blackboard?
― ________. I’m too busy.
A. No, I can’t B. No, I couldn’t C. No, I needn’t D. No, I mustn’t
23. It is over _______ from Shijiazhuang to Beijing.
A. three hours’ drive B. three hour’s drive
C. three hours’ drives D. three hours drive
24. We _____ play sports in the school on weekdays, you know, we don’t have enough time.
A. often B. usually C. hardly D. ever
25. ______ number of students went to the park yesterday.
______ number of students is 50.
A. The; A B. A; The C. The; The D. A; A
Ⅱ、完形填空（共10小题，计10分）
阅读下面一篇短文，理解大意，然后从各小题的四个选项中选出一个最佳答案，使短文连贯完整。
One day a woman got into her car and started driving home after work. Suddenly, 26 saw a yellow car behind her. 27 was a man. When she turned left, the yellow car turned left. When she turned right, the yellow car turned right, 28 . When she stopped 29 the traffic lights, the yellow car stopped behind her.
The woman was afraid, so she drove 30 to the police station. She was very
31 when she found the car stopped behind her. At that time, a young man was standing outside the police station. The woman was very happy 32 him. She knew that he was a policeman 33 he was wearing a police uniform(制服). She jumped out of her car and ran to the policeman. She asked him to arrest(逮捕) the man in the yellow car, so the policeman walked to the man.
The man 34 to run away when he saw the policeman. He just smiled 35 said to the woman, “I want to give this purse (钱包) back to you, madam. I think you dropped it on the street.”
26. A. she
B. her
C. hers
D. herself
27. A. The worker
B. The driver
C. The doctor
D. The farmer
28. A. also
B. either
C. too
D. neither
29. A. in
B. on
C. to
D. at
30. A. quickly
B. slowly
C. easily
D. happily
31. A. interested
B. interesting
C. surprised
D. surprising
32. A. see
B. sees
C. saw
D. to see
33. A. after
B. before
C. because
D. when
34. A. didn’t try
B. tried
C. tries
D. doesn’t try
35. A. but
B. so
C.or
D. and
Ⅲ、阅读理解（20分）
A
根据下面一篇短文的内容判断下列句子的正误，正确的用“A”表示，错误的用“B”表示。（共5小题，计5分）
People have different views on time. If an American from the North makes an appointment with someone in an office such as a professor, a manager, or an official, at 11:00 am, he will probably arrive in the office earlier－maybe about five minutes before eleven. He will tell the secretary that he has arrived for her 11:00 appointment, and is waiting, He will wait comfortably for five or ten minutes. But, after ten minutes, he will become uncomfortable and a little annoyed. On the other hand, if a Latin American makes an appointment with someone at 11:00 am, he may not arrive in the office until 11:15 or 11:20. He will not be surprised if he has to wait until 11:45. The idea of what is early and what is late differs from culture to culture.
根据短文内容判断正误。
36. Different people have the same views on time.
37. An American from the North will probably arrive in the office for an appointment earlier.
38. A Latin American will arrive in the office for an appointment five minutes earlier, too.
39. The idea of what is early and what is late is the same in the world.
40. Most Chinese people hate to be late for an appointment.
B
阅读下面两篇短文，从各小题所给的四个选项中选出能回答所提问题或完成所给句子的最佳答案。（共10小题，计15分 B篇5分， C篇10分）
The Chinese New Year is the most important holiday for the Chinese people. For the Chinese, the New Year comes with the first day of the First Noon, between January 21 and February 19. People get ready for the holiday for 15 days.
Finally, at midnight of first day of the First Noon, people close the shops and streets are empty. Everyone locks the doors and stays at home.
It is an important time for the family. The young people bow (鞠躬) to the old people. The Chinese call this ketou. This means “to touch the ground with the forehead.” Then the young people wish the old people a Happy New Year. The old people give children gifts of money in red envelopes. The family then goes to sleep.
In the morning, people dress in their best clothes. Some people stay at home, others go out to pay a New Year call. They are very polite and do not use bad words. It’s the most important day of the year.
41. “The Chinese New Year” in the passage means “_________”.
A. Mid-autumn Day B. the Spring Festival
C. Christmas Day D. the Dragon(龙)王爷Boat Festival
42. It takes about __________to get ready for the Chinese New Year.
A. a few days B. twelve days C. half a month D. three weeks
43. At midnight you can see ________ peopie in the streets.
A. lots of B. hundreds of C. many D. few
44. The part of the face above the eyes and below the hair is the _________.
A. ear B. forehead C. nose D. mouth
45. On the Chinese New Year’s Day, what do people usually say to each other when they meet?
A. Good Luck! B. Best wishes! C. Good moming! D. Both A and B.
C
Many teenagers feel that the most important people in their lives are their friends. They believe that their family members, and in particular their parents don’t know them as well as their friends do. In large families, it is quite often for brothers and sisters to fight with each other and then they only go to their friends for getting ideas.
It is very important for teenagers to have a friend or a circle of friends. Even when they are not with their friends, they usually spend a lot of time talking on the phone. These conversations are very important in children’s growing up, because they can discuss something difficult to their family members.
Parents often try to choose their children’s friends for them. Some parents may even stop their children from meeting their good friends. The question of “ choice” is an interesting one. Have you ever thought of the following questions?
Who choose your friends?
Have you got a good friend your parents don’t like?
Your answers are welcome.
根据短文内容，选择最佳答案。
46. Their________know them better than their parents for the teenagers.
A. classmates B. friends C. brothers and sisters D. cousins
47. When the teenagers stay alone, they ______________.
A. go to the cinema B. talk with their parents
C. watch TV at home D. talk with their friends
48. Parents should try their best to _______ their children better.
A. understand B. answer C. refuse D. afford
49. “Your answers are welcome” means____________.
A. you can answer your children’s question
B. you have got a good idea
C. You can tell us your ideas
D. You don’t trouble anyone
50. Which is the best title for the passage?
A. Only parents can choose B. Teenagers need friends
C. The trouble of families D. The most difficult questions
第Ⅱ卷 （非选择题，共45分）
IV、完成句子（共10小题，每小题1分，计10分）
A）请用下面方框内所给的词或短语完成下列句子，每项只能用一次。
happily, to be, popular, vacation, As
51. I’m going sightseeing on _______ with my parents.
52. In England, the most _______ food is fish and chips.
53. All my friends are singing and dancing in the park________.
54. David is good at singing. So he wants _______ a singer.
55. ______ for service, most people think that New world is really great
B) 请用下面方框内所给的词或短语的适当形式完成下列句子，每项只能用一次。
perform, nine, invite, with, success
56. He hurried to school ________ breakfast.
57. Thank you for ______ me to your birthday party.
58. Dennis joined the play club and became a ___________.
59. Today is Cindy’s _________ birthday.
60. Steve passed the exam. He is ______________.
V、任务型阅读（共5小题，每小题2分，计10分）
阅读下面短文，根据短文内容，完成表格中所缺的信息。
Eating habits (习惯) are different in different countries. The Chinese have a saying “Eat good things for breakfast, eat a big meal for lunch, but eat less at dinner.” Many Americans agree that one should start the day with a good breakfast, but their ideas about lunch and dinner are different.
Most Americans only give themselves a short time for lunch. So they eat a small lunch. After work they will have more time to eat a big dinner. Also a quiet dinner at home with all the family talking about their day is a way to take a good rest after a long, hard day of work.
Eating at restaurants is also different. In China, People like to talk and laugh while eating. Very often you can hear people talking and laughing loudly, and they are just having a good time. In America it is not like this. They want a quiet place where they can eat a good meal far away from the noises of the outside world. If someone is talking too loudly, the manager(经理) of the restaurant will look at him or her angrily. If some people are talking too loudly, the manager of the restaurant may come out and ask them to be quiet.
The title(标题) of the text
61._________________________________________________________________
Chinese
Americans
62. for breakfast.
Start the day with a good breakfast.
Eat a big meal for lunch.
63. .
64. at dinner.
Prefer a big dinner at home or restaurant.
65.
While eating at the restaurant.
Like to eat far away from the noises.
VI、补全对话（共10小题）
A）根据对话内容，将方框中符合对话情景的句子抄写在对话的空白处，使对话恢复完整，选项中两项是多余的。（5分）
A: Hi, Liu Ming. May I ask you some questions?
B: Yes, of course.
A: 66. ____________
B: English. I like it very much. And I am really good at it.
A: Mmm… But I’m not so good at it. Sometimes I can’t understand what the speakers say.
B: It’ s not a big problem. 67._______
A: Oh, it’s very kind of you.
B: First, listening is the most important if you want to know what others say.68.__________________ The more you listen, the easier it becomes.
A: 69. __________
B: Sure. At the same time, you’d better buy a radio. Then you can listen to the English programs on it.
A: OK. I’ll try your idea.70.___________
B: It’s my pleasure. Bye-bye.
A. Why don’t you learn English?
B. I’m very glad to help you.
C. Do you think that will help?
D. What’s your favorite subject?
E. When did you begin to learn English?
F. Thank you so much.
G. So you should practice listening very often.
B) 根据下面对话中的情景，在每个空白处填入适当的语句，使对话恢复完整。（5分）
A: Hello, Li Lei. How beautiful your new MP3 is!
B: 71.________________________
A: Where is it made?
B: It is made in Beijing.
A: I also want to buy one.72.________________________
B: In Saige Computer Store. And there are many different types. 73.________
A: I Like white best. 74._________________________________
B: About 120 yuan.
A: Mm… The price is good. Well, would you like to go to the store with me next week?
B:75. _________________________
VII.、写作（15分）
A）请根据所给词语，写出语法正确，意思连贯的五个句子。（5分）
76. Li Ming, good student.
77. begin, learn, English, two years ago.
78. at that time, think, difficult.
79. his teacher, him, do more listening and speaking.
80. now, well speak, English.
B) 假如你是Jim，你的好朋友Dave最近经常玩电脑游戏，一天中午放学后他邀请你和他一起去玩电脑游戏，你会去吗？请给出理由。（字数60―80左右）
陕师大附中2007―2008学年度第一学期期末考试
八年级英语答题纸
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
第II卷
IV、完成句子
51._______________ 52._____________ 53.__________________
54._______________ 55._____________ 56.__________________
57._______________ 58._____________ 59.__________________
60._______________
V、任务型阅读
61.____________________________________
62.____________________________________
63.____________________________________
64.____________________________________
65.____________________________________
VI、补全对话：
A）66.________________________________
67.________________________________
68.________________________________
69.________________________________
70.________________________________
B）71.________________________________
72.________________________________
73.________________________________
74.________________________________
75.________________________________
VII、写作
A）76.______________________________________________________
77.______________________________________________________
78.______________________________________________________
79.______________________________________________________
80.______________________________________________________
B）________________________________________________________
________________________________________________________
________________________________________________________
________________________________________________________
________________________________________________________
________________________________________________________
________________________________________________________
________________________________________________________
________________________________________________________
2009届新课标物理考点预测（4）
曲线运动 万有引力
一、考点介绍
近5年来，本考点知识已成为高考的热点内容之一，有时为选择题，有时以计算题形式出现，重点考查的内容有：平抛运动的规律及其研究方法，圆周运动的角度、线速度、向心加速度，做圆周运动的物体的受力与运动的关系，万有引力定律，行星、卫星的运行等，同时，还可以与带电粒子的电磁场的运动等知识进行综合考查；重点考查的方法有运动的合成与分解，竖直平面内的圆周运动应掌握最高点和最低点的处理方法．尤其是当前星际探索成为世界新的科技竞争焦点，而我国的载人航天已取得了成功，探月计划也进入实质性进程之中，因此在这些知识点的应用上应引起高度重视．
2009届新课标物理考点预测（2）
相互作用
一、考点介绍
本考点是力学乃至整个物理学的基础,也是核心知识,对物体进行受力分析则是解决力学问题的关键.纵观近几年的高考试,可以看出本考点考查有如下几类:一是对摩擦力、受力分析、力的合成和分解、共点力作用下物体的平衡等知识点的考查出现率几乎高达100%；二是纯属静力学的考题,物体受力不在一条直线上,通常为容易题或中等难度题,以选择题的形式出现;三是连接体的平衡问题,通常考查整体法和隔离法,难度稍大一些;四是与其他知识综合进行考查,如与动力学、力量、动量、电磁学等知识综合，难度较大;五是重点考查学生运用知识解决实际问题、构建物理模型的能力和综合分析能力。
