A scientist is someone who conducts and gathers research （研究） to further knowledge in a particular area. A scientist believes that there is a natural explanation （解釋） for most things. In
A writer is a person who uses words to communicate ideas, express emotions, and convey messages to an audience. Writing
Doctors are specially trained and licensed （領有牌照的） medical professionals （專業人士）. They provide essential medical care. They make people healthier. When someone gets sick, a doctor
Teachers teach students to read, write, and much more. They show students skills. They also explain information. Teachers try to make their
