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高考数学大题6大题型是:
1、三角函数、向量、解三角形
(1)三角函数画图、性质、三角恒等变换、和与差公式逗困。
(2)向量的性(平面向量背景)。
(3)正弦定理、余弦定理、解三角形背景。
(4)综合题、三角题一般用平面向量进行“包装”,讲究知识的交汇性,或将三角函数与解三角形有机融合。
重视三角恒等变换下的性质探究,重视考查图形图像的变换。
2、概率与统计
(1)古典概型。
(2)茎叶图。
(3)直方图。
(4)回归方程。
(5)(理)概率分布、期望、方差、排列组合。概率题贴近生活、贴近实际,考查等可能 性事件、互斥事件、独立事件的概率计算公 式,难度不算很大。
3、立体几何
(1)平行。
(2)垂直。
(3)角。
(4)利用三视图计算面积与体积。
(5)既可以用传统的几何法,也可以建立空间直角坐标系,利用法向量等。
4、数列
(1)等差数列、等比数列、递推数列是考查的热点,数列通项、数列前n项的和以及二者之间郑指的关系。
(2)文理科的区别较大,理科多出现在压轴题位置的卷型,理科注重数学归纳法。
(3)错位相减法、裂项求和法。
(4)应用题。
5、圆锥曲线(椭圆)与圆
(1)椭圆为主线,强调圆锥曲线与直线的位置关系,突出韦达定理或差值法。
(2)圆的方程,圆与直线的位置关系。
(3)注重椭圆与圆、椭圆与抛物线等的组合题。
6、函数、导数与不等式
(1)函数是该题型的主体:三次函数,指数函数,对数函数及其复合函数。
(2)函数是考查的核心内容,与导数结合,基本题型是判断函数的单调性,求函数的最 值(极值),求曲线的切山丛念线方程,对参数取值范 围、根的分布的探求,对参数的分 类讨论以及代数推理等等。
(3)利用基本不等式、对勾函数性质。
正确答案是B。②中要电解质同时在水溶液和熔融状态下完全电离腔弊才能称为强电解质。③中金属最外层电子数握空一般是少于4个,但也段圆瞎有金属最外层电子数大于4的(如Po的最外层就有6个电子)
高三了,也接近高考了。那么,英语这科要怎么做练习呢?接下来,我就和大家一起来做份高三高考英语阅读理解专项训练试题,希望对大家有帮助!
高三高考英语阅读理解专项训练试题及答案
走进中考(苏州•2010)
Why do you think people who live in some hot countries eat very spicy(辛辣的) food? Is it because the spices make the food taste better? Is it just because their parents and grandparents and great-grandparents liked hot food,or is there some connection between spices and healthy food?
Researchers from Cornell University think that it is because spice plants have some important chemicals(化学物质).These chemicals can kill bacteria(细饥链含菌) which spoil food."Most common spices can kill 75 to 100 percent of the bacteria in food," explains one of the scientists.The bacteria grow more easily and spoil food more quickly at higher temperatures.For this reason,it is more difficult to keep food from spoiling in hot climates.
烂笑Do you like your food spicy? Your answer probably tells something about the country you come from.If you like spicy food,it is possible that hundreds of years ago,when there were no fridges,people in your country started using spices to keep the food from spoiling.The traditional spicy dishes helped those people to live longer,healthier lives.Today,in a time of fridges,the spices just make the food taste good.
阅读短文,根据短文内容选择最佳答案。唤败
( ) 1.The chemicals in spices keep food from spoiling by ________.
A.making food taste better
B.making food hotter
C.killing bacteria in food
D.preventing bacteria getting into food
( ) 2.Food goes bad more quickly in hot climates because ________.
A.high temperature makes more bacteria
B.high temperature helps bacteria grow faster
C.bacteria get used to hot food
D.bacteria spoil food only at high temperature
( ) 3.According to the passage,spices are useful in all the following things except _______.
A.replacing fridges
B.helping you to live longer
C.helping to keep you healthier
D.making your food taste better
解析
1.C 由第二段第二句“These chemicals can kill bacteria(细菌) which spoil food.”可知正确答案为 C。
2.B 由第二段倒数第二句“The bacteria grow more easily and spoil food more quickly at higher temperatures.”可知正确答案为 B。
3.A 由最后一段倒数第一、二句“The traditional spicy dishes helped those people to live longer,healthier lives.Today,...make the food taste good.” 可知 A 项并没有包括在内,故正确答案为 A。
话题专练
一
This is not a diet.It's a simple way to lose weight.And you don't even have to give up the food you love or join a gym.You just follow some habits that thin people have.Keep them,and you'll become thin.
(1) Wake-up
When you wake up in the morning,sit up slowly without using your hands.With legs straight out,bend(弯曲) forward until you feel sore in your back.It will burn about 10 calories(热量单位:卡路里).
(2) Start with soup
When you have a meal,order a clear soup,and have it before having the main food.In this way,you'll feel fuller,so you'll eat less when the main food comes.
(3) An apple (or more) a day
Apples are full of fiber(纤维) and water,so your stomach will want less.The study shows that people who eat at least three apples a day lose weight.
(4) Stand up and walk around
Every time you use the mobile phone,stand up and walk around.Heavy people sit on average(平均) two and a half hours more each day than thin people.This skill is very important as standing up and walking around will burn 50 or more calories.
Use these skills,and you will have a big weight loss.
根据短文内容,选择最佳答案。
( ) 1.What should we have first if we want to eat less main food?
A.Ice cream B.Soup. C.Salad. D.Cheese.
( ) 2.Why does eating apples make one's stomach want less food?
A.Because apples are full of fiber and water.
B.Because apples are sour.
C.Because apples are delicious.
D.Because only apples are filled with calories.
( ) 3.Which of the following may the author disagree?
A.Sitting up slowly without using your hands helps burn calories.
B.Eating apples every day is good for people's health.
C.You have to join a gym if you want to lose weight.
D.It's good to walk around while talking on the mobile phone.
( ) 4.What's the purpose of the passage?
A.To give some advice on how to lose weight.
B.To advice people to eat apples every day.
C.To tell people how to enjoy a better life.
D.To advice people to give up bad habits.
( ) 5.In which part of a newspaper would you most probably read the passage?
A.Shopping. B.Teaching. C.Family. D.Health.
答案:
1.B 根据短文中建议 2 可知,饭前喝点汤,可以减少主食的摄入,能达到减肥的目的。
2.A 根据建议 3 可知,苹果中含有大量的纤维和水,多吃苹果可以减肥。
3.C 根据短文内容可知,作者并不主张去健身房,所以选 C。
4.A 根据短文内容可知这篇文章的目的是建议你如何减肥,所以选 A。
5.D 这篇文章重点是就如何减肥提供的建议,所以选 D。
二
A large number of people in the world eat fast food.Whenever you go into a fast food restaurant,you can see lots of people enjoying their meals there.But do you know in which country people like fast food best?
The English people like the fast food best,while the French are the least interested in quick meals,according to survey done last year.
The survey of thirteen countries shows 45% of the English people say they can't give up fast food because it's delicious.And 44% of Americans and 37% of Canadians say the same.
The French,proud of their delicious and high-class cuisine,don't like fast food.81% of them think it is unhealthy,followed by 75% of the Japanese.
How about the Chinese? How often do you have hamburgers or fried chicken? It doesn't matter whether you like Western fast food or Chinese food.The most important things is to keep a balanced diet.
根据短文内容,选择最佳答案。
( ) 1.From the survey we know ________ like fast food best.
A.the English
B.the French
C.the Japanese
D.the Chinese
( ) 2.The survey shows ________ of Americans likes fast food.
A.37% B.44% C.75% D.81%
( ) 3.According to the survey,some people can't give up fast food because ________.
A.it's cheap
B.it's delicious
C.it's safe
D.it's healthy
( ) 4.The word "cuisine" in the passage means _______.
A.food B.house C.water D.country
( ) 5.The survey is about _______.
A.Western countries
B.fast food
C.restaurants in the world
D.Chinese food
答案:
1.A 根据短文第三段内容的数字可以判断快餐很受英国人的青睐。
2.B 根据短文第三段内容的数字 44% of Americans 可以确定答案。
3.B 根据短文第三段的内容 because it's delicious 可知,答案是 B。
4.A 根据短文中上下句的关系可以推断 cuisine 是食物的意思,所以选 A。
5.B 本文是对快餐的调查,即选 B。
三
If there is a test at school today,you may feel awful.Your stomath may hurt and you may have a headache.Maybe even your muscles feel tense.That means you are too worried.You're worried about your test because you didn't do well on the last one,or maybe you're nervous because you did well on the last one.What should you do?
Ask for help.Talk to your mom,dad or your teacher.Talking to someone about it can make you feel better.They can help you find some solutions.
Be prepared.Do your homework.Study for the test.On the test day,you're more likely to feel that you know the answers.
Believe in yourself.Say to yourself,"I studied and I'm ready to do my best." Don't tell yourself "I'm not good at it." or "I'm going to be in trouble if I get a bad grade." These thoughts can make it harder for you to do well.
Take good care of yourself.You'll feel your best if you get enough playtime,sleep and nutritious(有营养的) food.This is important all the time.
根据短文内容,选择最佳答案。
( ) 1.If your muscles feel tense before a test,that means _______.
A.you have got a bad cold
B.you didn't do enough exercise
C.you are too worded about the test
D.there is something wrong with your muscles
( ) 2.The writer thinks that some students feel bad before their tests because ________.
A.they didn't take care of themselves
B.they didn't do well on the last one
C.they don't still want to get good grades this time
D.they aren't afraid their teacher will punish them
( ) 3.What is the main idea of the first paragraph?
A.Why do your muscles feel tense?
B.Learn to take care of yourself.
C.Fully prepare for the test.
D.Why do you feel nervous before a test?
( ) 4.Which is NOT true according to the writer?
A.Talking to your parents and teacher before a test may help you a lot.
B.Study hard for the test and you'll know all the answers.
C.Believe in yourself and this will help you get better grades.
D.It's important to get enough playtime,sleep,and nutritious food.
( ) 5.What's the best title for the passage?
A.Don't Be Nervous.
B.Believe in Yourself.
C.How to Relax Before a Test.
D.Why Are You Worried about Your Test?
答案:
1.C 根据第一段的内容可知,当面临考试时,都会感到浑身不舒服,即本题答案是 C。
2.B 根据短文内容可知,学生在考试前没有做好准备,所以选 B。
3.D 根据第一段的内容可知主要是讲学生为什么考试前会紧张,所以选 D。
4.B 根据短文内容可知,学生努力学习,考试时就会得心应手;自信以及合理的饮食和睡眠对考试影响也很大,所以可以确定答案是 B。
5.C 根据短文内容可知,主要是讲怎样做到考试前放松自己,所以最佳题目是 C。
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