Why do our teeth hurt? Our teeth are hard, like built-in knives and forks in our mouths. However, they still feel pain quite easily. Why are teeth so sensitive (敏感的) to pain? Tooth pain is a defense mechanism(防卫机制).1. It helps us notice we must do something to protect our...
有时，甜味的东西和暴露的牙本质的碰撞就会导致疼痛。而这一切都是因为你在科学课上的老朋友：渗透作用。Osmosis is the movement of something like water across a selectively permeable barrier. It goes from the side where there's less stuff dissolved to the side with more stuff.渗透是指像水这样的东...
Why do my teeth hurt after whitening? If this question is putting a damper on your newly white smile, you’re not alone. More than 6 in 10 people will experience tooth sensitivity after teeth whitening. Fortunately, there are many simple ways to deal with this annoying – and painful – ...
A. Because his teeth hurt badly.B. Because it was very cold outsideC. Because he ran fast for a very long time 相关知识点: 试题来源: 解析 C 选项A提到牙痛,但牙痛通常不会导致脸部发红,反而可能因疼痛引起脸色苍白或其他症状。选项B指出天气寒冷,虽然冷空气可能导致皮肤泛红(尤其是脸颊),但通常...
2.What does your dad want?3.He doesnt brush his teeth every day. 4.Tom never flies a kite in the street. ...
( )54. Why did the boy lock the lion in the cage? A. Its big teeth would hurt hum B. It felt good in the cage C. He was afraid it would leave D. He didn't think it was his friend)55. What happened after the boy opened the wolf't cage A. The wolf ran away. B. The...
Why does the inside of my ear hurt when I touch it? In children, the most common cause of ear pain is an ear infection. Adults are less likely to get ear infections. If your ear hurts when you touch it, you may have an upper respiratory infection caused by a virus or bacteria. Oth...
也更需要糖果。 小朋友比大人更喜欢糖果。 Childrenenjoy candy more than adults. 这究竟是为什么呢? 小朋友们对糖果有着天生的偏好。 婴儿出生后的第一种食物母乳就是甜的 Breast milk is sweet. 没有人教婴儿必须喜欢甜食, 所以喜欢甜食是与生俱来的!
Always be clean, shower, brush your teeth,and try to look nice. Dress in clean clothes. They must make you feel good andcomfortable. Those make you feel more confident. ★Smile moreoften. Try to smile more often at people. It willget them to think that you are friendly. Then they’ll...
Teeth Whitening Orthodontics & Braces Dental Emergencies Dental Disorders & Disease About Disclaimer About Me Comments Policy Advertising Privacy Policy Archives Ask a Question Search HomeDental CrownsSix Reasons Why Your Crown Fell Off Dental Crowns Six Reasons Why Your Crown Fell Off By Tom Draper Ap...