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Dentists want people to keep their mouths and teeth healthy. Dentists encourage (鼓励) patients to take care of their teeth. They will tell them to brush and get regular checkups. These good habits help prevent cavities (龋齿洞) and other tooth and gum (牙龈) diseases. At a checkup, a dentist will check teeth and clean them. If a dentist finds a cavity, he or she will fill it.
Becoming a dentist takes many years. A student goes to college for four years and must get good grades. They then must pass a special exam to get into dental school. In dental school, students spend their first two years in the classroom. During the last two years, they work with patients in clinics (诊所). After that, they must pass a test to get a license to be a dentist.
A dentist needs to be caring and good with people. Since many people are afraid of visiting a dentist, a dentist need to make them feel comfortable (舒服的).
There are several different kind of dentists. Some dentists work with children. All their patients are 18 years old or younger. Other dentists make people’s teeth straight. Still other dentists focus on gums and gum disease.
Dentists work hard to keep people’s teeth healthy.
1．When a dentist finds a cavity on your teeth at a checkup, he or she will ________.| A．ask you to sleep | B．only clean it | C．fill it. |
| A．They must study hard in the classroom. |
| B．They must work with patients in clinics. |
| C．They must work with pass a test to get a license. |
| A．full of love and kindness | B．good-looking | C．rich |
| A．story book | B．advertising board | C．website |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
