Essay on the first year of junior high school, seeking answers!! 400 Words !! Be 10 faster

Essay?? Then you can just search for one on the Internet.

1.The light source is natural and artificial.

2.Dispersion of light.

3.Red-green-blue, red-yellow-blue.

4。Light. 2.Red-green-blue, red-yellow-blue.

3.Red, orange, yellow, green, blue, indigo, violet, and white light are composed of a variety of color light.

4.Red-green-blue.

5.Energy Light energy.

1.Invisible light.

2.Infrared Infrared Intense Heat3Ultraviolet fluorescent substance.

1.Seven types of infrared and ultraviolet rays.

2.Strong. 3.Makes the fluorescent substance glow and the sterilization effect is straight.

3.Light travels in a straight line.

1.Light travels in a straight line.

Do it yourself, ok? You have to use your brain more, Alas, it's not saved, the knowledge you learned is for food? Don't you remember?

Ay!!! When you go to school, do you go to the bench or go to raise fat, I really don't know how you learned, think about it yourself, don't keep asking others, this habit is not good, you know? Ay!!!

Fainted.

The answer is 80°.

According to the title, boe+ bof= boe+30°= foc, and 2 foc+ doe=180° and boe= doe

So bringing it in gives 3 boe+60°=180°, and the solution gets boe=40°.

Hence bod=2 boe=80°. Since the angles to the apex are equal, aoc= bod=80°

Let boe= doe=x, so cof=180- dof=180- bof- bod=180-30-2x=150-2x

cof= eof= bof+ boe=x+30, so 150-2x=x+30, find x=40, so aoc= bod=2x=80

(1) When m=3, -64;When m = -3, 8

2) When m=3, -2;When m = -3, 4

The title is a bit wrong

Is it (x+y) the power of x minus the power of (ab+m).

Multiply the height with 1 2 bases, and divide it into 3 parts 8 + 4 + 2 = 14

A person's life is like a ship drifting in the ocean, it is impossible to reach the other side of success smoothly, but must go through the baptism of storms and waves to reach the other side of success. Life is like a trickle of water, if you want to become a surging wave, you must pass through the winding and tortuous stream. It's as the song goes:

How to see a rainbow without experiencing wind and rain, no one can succeed ...... with change"Everyone is eager to succeed, and they are eager to be successful with the kind of hug and applause, but do you know that behind success there are often many unknown hardships and pains!

Without wind and rain, it is difficult to see a rainbow. Just like the classes of the students of the Bombay Buddhist Institute, there are many small doors to go through. It is convenient and beautiful to enter and exit from the "main gate", but there are often not so many "main gates" in life, and there are always many things that backfire, which always make us have to bend down sideways into the "small gate"!

Therefore, this also allows us to experience the philosophy of life contained in "entering the small door". Some of my classmates around me often praise some students for their good grades and some people for their successful lives, but they don't pursue and think about the internal reasons for their success and good grades, and they don't know the sweat behind their success. And they sighed and refused to start from themselves, did not start from small things, refused to pay hard sweat, and were opportunistic in every exam.

Therefore, in the face of life, they can only sigh and regret. You must know that beautiful butterflies are certainly charming, but the process of transforming from cocoons to butterflies is long and painful.

The famous singer Sun Nan, before becoming famous, he played sixty or seventy types of work, for his own ideals and success, he used to be a worker on a construction site, a craftsman, once worked all night in order to improve his professional knowledge and for life, once lived on the streets, and stayed at the station. For the sake of lofty ideals, he has worked hard, he has paid, he is down-to-earth, step by step, bravely facing setbacks, and resolutely accepting the challenges of life. Finally, he succeeded, climbed through small doors, and finally came to the door of success, with an enviable career, with flowers and applause.

In the face of success, he said lightly: "From the 'small gate' to this charming 'gate', only I know the hardships. I will work tirelessly to get through the 'gate', even if there are so many 'small doors' ahead!

What pertinent, what a long word, if Sun Nan only hoped for the glory of the gate and retreated in front of the small gate, then we would not be blessed with his unique voice! He may have missed the **! If the 'gate' is the ideal and success of life, then the 'small gate' is the only way to the palace of success.

If you only want the 'gate' and you are tired of the 'small gate', then you will always have to wander outside the 'gate'.

Friends, please go through every little door of life!

I recommend you to go to Xiaohe Composition Network

Wouldn't it be nice to look at the composition papers... This kind of perception of life is to be experienced by yourself, no matter how good what others write, it is also someone else's, so it is better to write it yourself, it is more real.