If there are only 450 words of human composition in the world.

This composition is very interesting, but it is a false proposition. Junior high school students, right, it's immoral to help write a composition. I'm digressing. Anonymity is incomplete without subtopics. Talk too much. Delete it yourself.

end of one's life

At the end of Cretaceous 65 million years ago, the fifth mass extinction occurred, but no one could predict that the sixth mass extinction occurred a year ago. The deterioration of the environment has caused the unbearable nature to fall like a meteorite. Surprised! Almost all animals and plants died out in a month. Even highly skilled human beings are hard to avoid difficulties. Food shortage and social chaos have dealt a heavy blow to mankind.

There are no pedestrians in the street as before. There are no couples laughing and laughing, no students coming home from school, and no aunts working out. There is only a gray atmosphere, demonstrators, various slogans and banners-"We need food and the right to live." "The truth! Give the world a truth. " And newspapers ...

Oxygen-making machines and food-making machines have become hot items. However, the great changes have left no time for human beings to react, even if they snapped up these items at the beginning. It is also difficult for many people to survive in this sudden environment, especially the elderly and freshmen. The outdoor temperature difference between day and night is two or three hundred degrees, so almost any outdoor activities can't be carried out. Even if you travel by ordinary car, you will be roasted into dried meat or frozen into ice residue. There is only one moment of day and night every day, and people can only barely travel.

Since the development of human society, spirit has never defeated matter. What's more, it has always been a world of the jungle. It's just more explicit at the end of the day. Good or bad ... but good things are often just fleeting fireworks. In the second month after the end of life, killing atrocities became commonplace. The regime assembled, tried every means to get out of trouble, emigrated to aliens, "Noah's Ark Project", and even sought help from aliens. But none of them are realistic.

In a year, humans gradually moved underground. Become more United and more divided. Only1400 million people remain. African countries have basically lost everything. Only by uniting and helping each other and enjoying science and technology can the rest of mankind have a better way out. Chaos will soon subside, and if you can't let go of the pain, you can only live in sadness or numbness. Civilians work, rest and play every day. Great people, still singing and dancing. Life is more scientific and technological. Although we can't eat fresh fruits and vegetables, we can't see birds and fish.