How to write a comment on the unsolved mystery of the world with internal quality?

There are many secrets in this book that many people don't know. The first chapter is space exploration, the second chapter is earth adversity, the third chapter is human mystery, the fourth chapter is scientific adversity, the fifth chapter is archaeological mystery, the sixth chapter is the secret of treasure map, the seventh chapter is historical suspense, and the eighth chapter is the "different" things of celebrities.

My favorite is the second chapter, the mystery of the collective disappearance of human beings in the face of the earth's adversity. The content of the answer is 19 15 12. There is a war between Britain and Turkey, and the fourth army led by British general Novlake is preparing to attack the military stronghold of Galapaulia Peninsula in Turkey. The British army bravely climbed to the top of the mountain, held high the flag and climbed to the top with cheers. Suddenly, a cloud fell in the sky, covering the top of the mountain, which was more than 0/00 meters long. The commanders were surprised to find that all the British soldiers on the top of the mountain were gone.

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Another mystery is that1September 9, 1990, on the control tower of Caraga airport in Venezuela, South America, a Douglas passenger plane was suddenly found flying near the airport, and the radar of the airport could not find the existence of the plane at all. It took off from new york on July 2nd, 1955, and flew to Florida. Then suddenly disappeared on the road. When they came home, their family was old.

After reading Unsolved Mysteries of the World, I know that there are still many mysteries in the world that people have solved, and there are still many unsolved mysteries. Students, do you want to solve these mysteries? Then let's study hard from now on and try to solve these mysteries when we grow up.