Aldopentose is a type of carbohydrate, an aldose with five carbon atoms.

This is a kind of flower.

Carbohydrates are important as a source of energy.

Carbon is one of the basic elements of life.

He was holding my hand tightly.

He was running while holding a bag.

He always carries an umbrella around.

Understanding the structure of atoms is a fundamental part of physics.

The government is considering the introduction of a carbon tax.

In May, there is Golden Week in Japan.