The problem of filling in the unit can be accumulated in daily life. We know that a car is about 1.5 tons, and then the rhinoceros is slightly heavier than a car to get the corresponding unit. Don't worry too much about this kind of problem when doing math problems. Only with reference can we get the correct answer.

Rhinoceros (scientific name: Dicerorhinus): the general name of four mammals. Rhinoceros is the largest Chiroptera in the world, with short legs, a body length of 2.2-4.5m, a shoulder height of 1.2-2m and a weight of 2800-3000kg. The three fingers of the forelimb are thick and rough, with wrinkles arranged at the shoulders and waist, sparse and hard hair, or hairless ears are mostly oval, with long head, short and thick neck and long lips. The head has a solid single horn or double horn (with female horn), which is caused by dermis and can be revived after falling off.