The Mystery of Life Affair Expository Essay, Write a simple Eye Affair Expository Essay of about 300

If the eyes are the windows to the human soul, then myopia is a white veil that covers the windows. Therefore, we should protect our eyes and prevent myopia.

The development of myopia is usually caused by genetics, malnutrition or incorrect eye use. Among them, incorrect eye use is the biggest factor in eye myopia among primary and secondary school students. How can we prevent myopia in our daily lives?

1. Insist on doing eye exercises several times a day to promote blood circulation and speed up the metabolism of the eyes.

2. When studying, you should do a good job of "three ones": your hands should be one inch away from the tip of the pen, your eyes should be one foot away from the book, and your chest should be one punch away from the table.

3. The study time should not be too long, generally every once in a while, look at the green plants in the distance, or close your eyes to recuperate, so as to reduce the fatigue of the eyes.

4. Develop good eye habits, don't study under too strong or too weak lights, don't play with the computer for a long time, etc.

5. Exercise more, eat more foods containing vitamin A, carotene, etc., and maintain a balanced diet.

6. Maintain eye hygiene, such as not rubbing your eyes with dirty hands, etc.

7. Getting enough sleep can give your eyes the best rest.

Myopia has brought a lot of inconvenience to our lives, so we need to protect our eyes, prevent myopia, and make our lives more colorful.

Protect your eyes.

The eyes are the most needed organ in the body, and if you don't have eyes, when you draw, you will only draw a bunch of indiscriminate pictures; When crossing the street, because you can't see the traffic light, you are very prone to accidental car accidents; If you don't have eyes, you won't know what the book is about when you read it.

There are many reasons for myopia, the most terrifying of which is watching TV and playing on the computer, because when I often watch TV, I can't help but see more than two or three hours, and when I play on the computer, only my hands are moving, and my eyes are looking at the picture that has been shaking.

When a person is reading a book on his stomach, the focus of the book is too close, and the eyes must be squinted to see more clearly; There is also lying down to watch TV, because lying down and watching TV is not in the right position, which will cause scoliosis in the long run, and the eyes will become squint. These reasons are fatal to myopia, so be very careful.

How can I protect my eyes? First of all, watch less TV, and when you want to watch TV, you must take a 10-minute break for every 30 minutes of watching; And the distance should be kept at least three meters so as not to cause myopia. Secondly, play less on the computer, and you must take a break of 10 minutes every 30 minutes, and you can't play with the computer on your stomach, so that your eyes will be overtired if you look up for too long.

Next, when reading a book, the posture should be correct, the distance between the eyes and the book should be 30 cm, and the light should be sufficient. Finally, look more into the distance, but also look at more green plants, so that your eyes can rest and not be overly tired.

The eyes are like the windows of our souls, if the eyes are blind, it is like a black paper pasted on the window of the soul, and it can't be torn off, then this life will also be a black and white life, so the eyes are very important, and we must take good care of them, so as not to let the previous brilliance all fade away in these dark times.

The general title of the expository essay is the object of the explanation;

Because the object of explanation is the thing or matter to be introduced in an article, it is generally a noun or noun phrase, and you can start from two aspects: one looks at the title of the article and the other looks at the beginning and end paragraphs. The description of the thing indicates that the thing being explained is sufficient.

The expository text indicates what is stated and forms a phrase: the ...... is introducedof ......(Object plus content).

The mystery of the kangaroo.

Kangaroos live in Australia, and although I haven't seen them in person, I know them very well.

Kangaroos are endemic to Australia. According to fossil research, kangaroos appeared in Australia 2,500 years ago, so even the national coat of arms of Australia is painted with a large kangaroo. Another reason why Australia has made the kangaroo one of the animals on its national emblem is that it will always jump forward and never go backwards.

Hopefully, people will also have the spirit of never backing down like kangaroos.

Kangaroos have two major characteristics, the first of which is the nursery pouch of the female kangaroo on the abdomen. Kangaroos are mammals, but unlike other mammals, they do not put their cubs directly on the ground to let them grow up like other mammals, but put the born wallabies in their mother's nursery bag and let them stay in the nursery bag for 6 months before the kangaroo can become a real kangaroo.

The second feature is the kangaroo's long, thick tail. This tail forms a tripod with its hind limbs when resting, and can sit upright to rest, and when it beats, it not only has the effect of maintaining body balance, but also acts like a "springboard" to make it jump.

Far and fast. Kangaroos can jump at a maximum speed of 60 kilometers per hour, jump over obstacles three meters high, and cross small rivers seven or eight meters wide. Interestingly, unlike other animals, kangaroos run at a lower speed and energy.

The greater the consumption, the lower the energy consumption after accelerating to a certain speed.

That's the cute kangaroo. With increased awareness of animal protection, kangaroos are now free to live on Australian soil. Hopefully, one day, I'll be able to go to Australia and see them for myself, and maybe I'll make new discoveries.