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Teeth are important. Strong, healthy teeth help you chew foods that help you grow. They help you speak clearly. And they help you look your best. Here are some tips for you to take care of your teeth. 1. brush your teeth the right way. Brush you teeth at least twice a day--after breakfast and before bedtime. If you can, brush after lunch or after sweet snacks, too. Brush all of your teeth, not just the front ones. Spend time brushing teeth along the sides and back of your mouth. Brush away from your gums, too. Spend at least three minutes each time you brush. Play a song you like to help pass the time. Get a new toothbrush every three months. When you buy your toothbrush, be sure it has soft bristles.( ) 2. learn how to floss your teeth Flossing is a very important way to keep your teeth healthy. Food may hide in places where a toothbrush cannot get to, like the space between two teeth. Flossing can help get rid of it. Carefully move the floss between two teeth, up and down. You'll need to floss your teeth at least once a day. 3. have good eating habits You need to be careful about what you eat and drink. Eating sugar is a major cause of tooth decay( 腐败) . Eating sugar before you go to bed can make things even worse. Eat lots of fruit and vegetables and drink water instead of soda.
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举一反三
【单选题】队列的存取规则是()
A.
随机存储
B.
先进先出
C.
后进先出
D.
按名存储
【简答题】请完成课本p31一p33页经典案例的两个思考题。
【单选题】下列选项正确的一项是( )
A.
嫉妒 jì
B.
大不韪 wěi
C.
推诿 wõ
D.
猥亵 wéi
【判断题】列车上的走行部位指的是转向架
A.
正确
B.
错误
【简答题】例:某公司拟采购一批零件,供应商报价如下: (1)30天内付款,价格为9750元; (2)31至90天内付款,价格为10000元。 请思考以下问题: 1、计算放弃现金折扣成本(答案用百分数表示,精确到0.01%) 2、假设银行短期借款利率为15%,确定对公司最有利的付款日期(答案写数字) 3、假定有一短期投资报酬率为40%,确定对该公司最有利的付款日期(答案写数字)
【单选题】嫉妒
A.
B.
【简答题】同学们: 2020.5.31 前学习完第十三章,并分析第十三章结束案例,把后面的问题和思考题上传到作业区。 以上作业一定要保存好等到校后,以纸质手写作业上交,作为平时成绩进行考核。
【单选题】关于拖轮拖带的驳船船队在锚泊中的号灯号型,下列说法正确的是:1应显示规则要求的号灯号型;2应将拖缆照亮;3可以将拖缆照亮,也可采取其他措施表明拖缆的存在;4规则没有强制要求显示或使用任何信号。
A.
①②
B.
C.
①③
D.
【判断题】6-16 在一个 Web 数据库中,中间件的作用在于将来自于公司内部数据库的信息传递给网络服务器,然后网络服务器再以网页的形式给用户提供信息
A.
正确
B.
错误
【单选题】下列选项错误的一项是( )
A.
开学在即 jí
B.
疾恶如仇 jí
C.
嫉妒 jì
D.
棘手 jí
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