First of all, the tortoise is a reptile, which usually lives in water or on land. Their bodies are flat, their shells are hard, and they are covered with cuticles, which can resist external harm. The tortoise's head, limbs and tail are all in its shell. When threatened, they will quickly retract their bodies into their shells to protect themselves. The tortoise shell is divided into two halves, and each side is divided into many small squares, and each square has a special name, such as ingot lattice and spiral pattern.

Secondly, the living habits of turtles are also very interesting. They are Nocturnal Animals, and they often hide in the shell or the sediment at the bottom of the water during the day to avoid the threat of natural enemies. And at night, they will come out for activities, foraging and playing. In addition, the tortoise is also a kind of temperature-changing animal, which will adjust its body temperature with the change of temperature. When the water temperature is too high or too low, they will choose to change water or hide in the shell to rest.

Historically, the image of tortoise appeared in many cultures. In ancient civilization, the tortoise was regarded as a symbol of good luck, because it represented longevity and prosperity. In the traditional culture of China, the image of tortoise is widely used in the fields of art, religion and politics. At the same time, in ancient Egyptian civilization, people thought that the tortoise was one of the longest-lived animals and regarded it as a mysterious and sacred symbol.

In addition, turtles have a far-reaching impact on human society. Turtles are not only loved by people as ornamental animals, but also widely used in science and medicine. Turtle shells are used as medicinal materials and decorations, which are said to have the effect of healing wounds and treating diseases. In addition, the patterns on turtle shells are also widely used in jewelry and works of art.

Finally, let's summarize the introduction of the characteristics and living habits of turtles. The tortoise is a popular animal. People are fascinated by its hard shell and long life. Although turtles will take urgent measures to shrink their shells when threatened, in fact, this animal is very friendly and deserves our attention and understanding. By studying the living habits and cultural background of the tortoise, we can better understand this ancient and magical animal.

Function of expository writing

1, conveying information: The main goal of expository writing is to convey information and let readers understand specific themes or concepts. This can be a variety of topics from science to daily life, such as the nutritional composition of food, the working principle of computers, or how to make cakes.

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