根据文章第二段第一句“Brush your teeth at least twice a day—after breakfast and before bedtime. ”(每天至少刷牙两次——早餐后和睡前。)和第三段第一行“Brush all of your teeth, not just the front ones. Spend time brushing teeth along the sides and back of your mouth.”(刷你所有的牙...
Brushing too hard or too often can harm your teeth. It wears down enamel and irritates gums, leading to sensitivity or gum recession over time. If you brush more than twice a day, use a soft toothbrush and apply gentle pressure. Harsh brushing techniques wear teeth faster. Focus on cleaning...
how to clean them – aritualnormallyaccompaniedby some kind ofcatchysong. As we mature, ourbaby teethdrop out, replaced by adult teeth. And soon it’s from trips to the dentists that we get more advice. And that’...
)57. How many times should you brush your teeth a day if you can? C. Three times. A.Once. B. Twice. D. Four times. 相关知识点: 试题来源: 解析 B【文章大意】本文主要讲述了一天刷几次牙。57.【答案】B【解析】题干意思是:如果可以的话,你一天应该刷几次牙?A项意思是“一次”;B项意思...
5. How long should you brush your teeth for? 2.选择意思恰当的单词或词组来完成下列句子。 1. I prefer water to ___ drinks. sugary scrubbing enamel regulate 2. I spent all day ___ the floor. It’s still not clean! catchy scrubbing...
How often should we brush our teeth? A. Once a week B. Once a day C. Twice a day D. Once a month 相关知识点: 试题来源: 解析 C。解析:为了保持口腔健康,我们应该每天刷两次牙。选项A一周一次刷牙次数太少;选项B一天一次不太够;选项D一个月一次是完全不卫生的。
How often should you brush your teeth 你应该多久刷一次你的牙齿？how often 英 [hau ˈɔfən]美 [haʊˈɔfən]词典 多久，多常
【题目】— How often do you brush your teeth? ( ) —___. A.TwoB.TwiceC.Two times 试题答案 【答案】B 【解析】 问句意为你多久刷一次牙?how often意为多久一次,用来提问频率。A意为二,B意为两次,C意为两倍。当time表示次数,不能用two times,应该用twice,因为只有等于或多于(3次)的时候,才能用...
()2. How long should we brush teeth each time? A. At lcast one minute. B. At least two minutes. C. At least three minutes. D. At least four minutes.()3. What can make teeth strong? A. Fnuit and sweet food. B. Coffee and vegetables. C. Fruit and vegetables. D. Candies ...
how often就是对频率提问，通常用once a week、twice a month等回答。do是助动词，问句中通常会用到be动词或do、does等助动词。一般陈述句语序是 I brush my teeth once a day.我每天刷牙一次。一般疑问语序是Do you brush your teeth once a day? 你每天刷牙一次吗？do是助动词，问句中通常会...