English translation Hi Lingling, Thanks for your last message,it was great to hear from you.You sound great fun,and I can `t wait to meet you. I hope you will recognise me from my photo when I arrive at the airport.I `m quite tall,with short fair hair,and I wear glasses.I `ll wear jeans and a T-shirt for the journey,but I `ll also carry my warm coat.I `ve got your photo –you look so pretty,so I `m sure we `ll find each other! Thanks for telling me about what you like doing. You sound just like me!I spend a lot of time with the school orchestra,but I also like dance music—I love dancing!I enjoy sports as well,especially tennis.My sister is captain of the school tennis term – I `m very proud of her!And I work hard at school – I feel stupid when I get bad marks and I get angry with mysely –I should work harder. You asked me how I feel about coming to China.Well ,at first I often feel a bit sad when I leave my mum and dad for a few days,and I `m quite shy when I `m with strangers.I feel nervous when I speak Chinese,but I `ll be fine after a few days.I `m always soor when I do something wrong, so please help me do the right things when I `m with you in China!Oh,and I `m afraid of flying but I `m very excited about coming to China! See you next week! Love Sally

English translation Hi Lingling, Thanks for your last message,it was great to hear from you.You sound great fun,and I can `t wait to meet you. I hope you will recognise me from my photo when I arrive at the airport.I `m quite tall,with short fair hair,and I wear glasses.I `ll wear jeans and a T-shirt for the journey,but I `ll also carry my warm coat.I `ve got your photo –you look so pretty,so I `m sure we `ll find each other! Thanks for telling me about what you like doing. You sound just like me!I spend a lot of time with the school orchestra,but I also like dance music—I love dancing!I enjoy sports as well,especially tennis.My sister is captain of the school tennis term – I `m very proud of her!And I work hard at school – I feel stupid when I get bad marks and I get angry with mysely –I should work harder. You asked me how I feel about coming to China.Well ,at first I often feel a bit sad when I leave my mum and dad for a few days,and I `m quite shy when I `m with strangers.I feel nervous when I speak Chinese,but I `ll be fine after a few days.I `m always soor when I do something wrong, so please help me do the right things when I `m with you in China!Oh,and I `m afraid of flying but I `m very excited about coming to China! See you next week! Love Sally

Hi, Lingling,
Thank you for your last message. Nice to hear from you. You sound interesting. I didn't wait to see you
I hope you can recognize me from my photos when I arrive at the airport. I'm tall, golden hair is short, I wear glasses. I'll travel in jeans and T-shirt, but I'll also put my warm clothes on. I'll unveil your photos - you look so beautiful, so I believe we'll find each other!
Thank you for telling me what you like to do
Your voice sounds like me! I spend a lot of time in the school orchestra, but I also like dancing. Music-i love dancing! I also like sports, especially tennis. My sister is the captain of the school. Tennis terminology - I'm very proud of her! Working hard at school, I feel stupid when I get bad grades, I'm angry with myself. I should work harder
At first, I often feel a little sad. When I leave my mom and dad for a few days, I'm very shy about who I am when I'm with strangers. I feel nervous when I speak Chinese, but I feel relaxed in a few days, But I'm excited to come to China!
See you next week!
I love you, Sally

28 and 72 common factors

In two or more natural numbers, if they have the same factors, then these factors are called their common factors. Any two natural numbers have a common factor 1. (except zero), and the largest of these common factors is called the greatest common factor of these positive integers. To find the greatest common factors of several integers, just multiply all their common prime factors, The product obtained is their greatest common factor. In short, the common factor shared by several numbers is called the common factor of these numbers. The greatest common factor is called the greatest common factor of these numbers
The common factors of 28 and 72 are 1, 2 and 4

It is known that the image of linear function y = KX + B passes (- 1, - 5) and intersects with the image of positive scale function y = half x at point (2, a)
1: The value of a
2: The value of K and B
3: The area of the triangle formed by the two function images and the y-axis

1、-5=-k+b;
a=2/2=1;
2k+b=1;
3k=6;
k=2;
b=-3;
The intersection of y = 2x-3 and X axis is (3 / 2,0), and the intersection of y = x / 2 and X axis is (0.0)
So area = (3 / 2) × 1 × (1 / 2) = 3 / 4;

How to keep healthy English composition in Junior Three

How to keep healthy (1)
How to keep in healthy is the question that related to everyone,so many people want to know the answers.Here are some su ggestions:first ,you should eat as much as fruits and vegetables,second,you must have enough sleep,the last,you should do more exercises.Except for the three points, you have to know the other three points which you should don't do:first,you shouldn't eat too much candles and become too fat,second,don't have too much coffee,the last thing,don'tmake yourself too tired.
In your daily life,pay more attention to these aspects,maybe you can have a healthy life.
How to keep healthy(2)
What is the most important thing in the world?I think it is health.
You can take away our money,house,car,or even our clothes and we can survive.But if our health was taken away,we would surely die.That is why we always try to eat in a healthy way and exercise regularly.
In order to eat healthily,I usually avoid eating food high in fat,like French fries or cookies.I also eat little meat.I eat a lot of vegetables and fresh fruit which are full of vitamins.
Taking exercise every day helps us build a strong body.Regular exercise is an important part of keeping me healthy.
What’s more,I think friends are an important part of one’s health.Many studies show that people with a wide range of social contacts get sick less than those who don’t.I always feel better when I am with friends than when I am alone.When I am with my friends,I always laugh.Laughing is also an important part of health.I like to laugh with my friends.
By eating properly and exercising regularly,I can keep my body at a proper weight and keep healthy.By spending time with my friends,I can keep my mind as well as my body happy.these things sound easy to do,but not many people can manage them.I think a strong will is necessary if we want to keep healthy.
How to keep healthy(3)
As we know,food gives us energy.So first,we must have enough food everyday.And we must also have the right kinds of food.We should eat fresh fruit and vegetables but less meat.We shouldn't eat bad food or drink sour milk.Because they are bad for our body.We should keep the air clean and fresh and keep our bodies ciean.
The second,we should do more exersise.We can piay basketball,soccer and volleyball or swim and skate.Swimming is good for our lungs.Walking is good for our legs,heart,and lungs.So we must do more exersise.
Now,do you know how to keep healthy?Let's keep our body healthy!
How to keep healthy(4)
Do you want a strong body?Let me tell you how to do.
You should eat lots of fruit and vegetables,and drink lots of boiled water.You should do exercise .You should sleep at least eight in the evening, too.but you shouldn't drink coffee or tea before sleep,you shouldn't eat too many candies.You shouln't work or study too hart.
The way can keep your health.
Many students do not have breakfast before they go to school.It 's a quite bad habit and it's bad for your health.Maybe you don't have time to have breakfast but you couldn't learn well in your classes if you don't eat any thing .Keeping in a good health which can help you study well is very important.
Choose your own!

There are 150 more chickens than ducks in the farm, and the number of ducks is 4 / 7 of that of chickens?

The number of ducks is 4 / 7 of that of chickens, which is compared by taking chickens as the unit "1", that is to say, chickens are 1-4 / 7 = 3 / 7 more than ducks, and this 3 / 7 = 150, then the number of chickens is 150 △ 1-4 / 7 = 350, ducks are 350-150 = 200 or 350 × 4 / 7 = 200

The problem of potential difference moves a positive charge of 1.x10 to the negative 8th power C from point a to point B. the work done by the electric field force is 2.4x10 to the negative 6th power J,

① EP = q ψ (U) deduces the quadratic V / m of UAB = ψ a - ψ B = 2.4x10

22222222 (23 14:56:43)
(2) the results of the 100 ratios (2) the results are as follows: (2) the large-scale ((-2) 99, and the results are as follows: (1) the large-scale (35;####\35;\\35\\\\\\35\ \\\\\\\\\\\\\ \\\\\\\\\\\\\\\\theresults are as follows: 160; #;; \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\160; & 160; & 160; (& 160; & 160; & 160;)
A、2          B、－2          C、299             D、3×299
 

(-2)100-(-2)99=(-2)(100-99)=1

A corollary of the limit theorem of sequence of numbers
Let UN be greater than or equal to 0 (or less than or equal to 0) for all N, and Limun = a, then a is greater than or equal to 0 (the corresponding a is small)
N to positive infinity
0)
This is a deduction. I want to ask, if one term in the sequence UN is zero, and the others are less than zero and tend to zero, is the limit of the sequence zero? Why is a zero when UN equals zero in the above deduction?

The limit is zero. Suppose the k-th term is zero, then the sequence after the k-th term is a sequence which is less than zero and tends to zero, and its limit is zero. Note that the limit can be the convergence of the remaining sequence after deleting any previous finite term
When UN = 0, the whole sequence is {0}; of course, Limun = 0
When UN is not 0, a may also be 0, for example, UN = 1 / n

What is odd plus even
More relationships

Odd plus even equals odd
2n+1+2m=2（m+n）+1
Because 2 (M + n) is even, 2n + 1 and 2m are odd and even, so
Odd plus even equals odd

Fifty simplified evaluation exercises in seventh grade mathematics volume I

2 (2a & sup2; + 2Ab) - (3a & sup2; + 4ab-b & sup2;), where a = 2, B = - 11 / 4 (a + b) & sup2; - 6 (a-b) + 3 / 4 (a + b) & sup2; + 6 (a-b) 5 (a-b) & sup2; - 3 (a-b) & sup2; - 7 (a-b) & sup2; + 7 (a-b) 1 / 2A & sup2; - 1 / 4B + 3 / 2A & sup2; - 3 / 4b-a & sup2; - 5yx & sup2; +