Dentists are specially trained to be experts and have to study for as many as eight years before they can treat patients on their own. And with modern technology and more »
Incredibly, the miswak is still in use today in some parts of Africa, the Middle East and Southeast Asia. Over the centuries, it's outlived some briefly-experimented-with toothbrush form factors like these: Toothbrushes at the National Museum of Dentistry include, from left to right: A miswa...
[单项选择题]请根据下面短文回答题 What does the word "They" in "They can probably pay a certain part of the full price ..." refer to [A] People. [B] Shops. [C] Goods. 本题来源: 2016年大学英语考试真题卷(5) 查看最佳答案和解析 ...
Recent data show comparable deficits in oral cleanliness after tooth brushing in habitual users of powered toothbrushes (PT) and manual toothbrushes (MT). The present analysis explores the origin of these deficits by relating aspects of the observed toot
People do it when they meet for the first time or something happy happens. For example, a student has good marks in exams. If a football team wins a game, the players will give high fives to everyone around to celebrate. This gesture may come from the old Roman gesture of raising (...
Put on gloves before you clean. Throw away any items with blood or body fluids on them, as directed by your healthcare provider. Do not share personal items. These items include toothbrushes, nail clipper, and razors. Do not share needles. Tell your sex partners that you have hepatitis B...
15. Where did the woman go last week? A. To the museum. B. To the countryside. C. To the cinema. 16. Why does the woman want to see Journey to the West? A. Because she has watched the TV play. B. Because she is interested in Chinese culture. ...
“Why did you not take its skin?” Sawda said: “What shall I do with the skin of a dead animal?” Thereupon, the Prophet said: “Allah states: ‘If you tan the skin of a dead animal, it becomes halal for you and you can use it.” ...
Carlos Matute, a neurobiologist in Leioa, Spain, had been curious how people’s brains continued working after intense exercise used up energy reserves in the body. Using an MRI, his team scanned the brains of four marathon runners in the days before and after the race, and two of the ru...
In the medical sector, the internet of things could make it possible to collect patient data, make accurate diagnoses, and monitor their health around the clock – people wouldn’t even have to see a doctor in many cases. Internet-compatible things, which constantly exchange information with eac...