2. Timer: Many electrical toothbrushes feature built-in timers which alerts users when they should switch to another part of the mouth. This helps ensure that all teeth are thoroughly cleaned. 3. Pressure Sensors: These sensors alert users when they're brushing too...
根据“The following food is very common to make teeth yellow...”可知,此处是说“不要喝可能会在牙齿上 留下污渍的东西” 。 画线单词与 color 同义。 故选 D 。 23. C 推理判断题。 根据“Get a teeth exam every six months."可知,每六个月检查一次牙齿,即一年检查两次牙齿。 故选C。 24. A...
六、书面表达。请根据提示,以“The way to keep healthy”为题,用英语写一篇短文。1.三要:多吃水果和蔬菜;晚上睡眠时间不少于8小时;多运动。2.三不
Teeth whitening is an excellent way to restore the natural color of your teeth or even make them whiter than your natural color if you would like View all Services Our Team Our philosophy at Heights Dental Smiles is simply to treat each patient the way we would like to be treated and to...
In the body, beta-carotene isconverted to vitamin A, which has many vital func-tions, including the growth and repair of body tissues, the formation of bones and teeth, the resistance ofthe body to infection, and the development of healthy eye tissues. Only five or six carotenoids are ...
Just one tablespoon has 110 mg of phosphorus, too, which is critical for the formation of bones and teeth. It also works with B vitamins to help with nerve signaling, normal heartbeat, and muscle contractions. How to eat it: Tahini is a great base for salad dressings and marinades for ...
The underlined word "stain" has the closest meaning to"” C.shake D.color A.dig B.lose)43. According to the passage, we should have a dental checkup A. twice a month B. six times a month C. twice a year D. every two years)44. Which one is NOT a good habit for teeth? B....
A How to Keep Your Teeth Healthy and Strong Bright smiles are important. When you greet others with a big, healthy smile,other people will smile back at you. Here are three tips on how to have healthy teeth.Tip 1 Keep Your Teeth Clean* Clean your tongue with a* Brush teeth for at ...
Benefits of Ceramic Braces: Less Noticeable: Ceramic brackets are designed to match the color of your teeth, offering a more aesthetic option than metal braces. Durable: While not as strong as metal brackets, ceramic braces are durable and can effectively treat a range of orthodontic issues. ...
sugar. Vegetable is the best source of s vitamin, because vegetables are rich in vitamins. Among them, vitamin C and vitamin A are the most important. Too much fat and sugar can lead to obesity, which is harmful to health. Besides, eating more fruits and drinking more water is of great...