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第 11篇 Teeth are important. Strong , healthy teeth help you chew(咀嚼) foods that help you grow. They help you speak clearly. And yes ,they help you look best. Here are some tips for you to take care of your teeth: 1. Brush your teeth the right way. Brush your 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. 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 toothbrush, be sure it has soft bristles(鬃毛). 2. Learn how to floss(用牙线清洁牙齿) your teeth. Flossing is a very important way to keep your teeth healthy. Food may hide between two teeth. Flossing can help get rid of it. 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(蛀牙).Eat lots of fruits and vegetables and drink water instead of soda(苏打). ( )1. How many times at least should we brush our teeth a day?______ A.1 B.2 C. 3 D. 4 ( ).2 What is the major cause of tooth decay? ______ A.Not brushing teeth B.Not changing toothbrush C.Eating sugar D. Not flossing teeth ( )3. How often should we change our toothbrushes? ______ A. never B.three times a month C. every three months D. every month ( ).4 The bristles of the toothbrush must be______ A. hard B. soft C. expensive D. not mentioned ( )5. Which is the right way to take care of teeth? ______ A.Only brush front teeth. B.Not brush teeth before sleeping. C.Spend at most three minutes to brush teeth each time. D.Eat lots of fruits and vegetables and drink water instead of soda.
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举一反三
【判断题】减数分裂中染色体配对在双线期进行
A.
正确
B.
错误
【多选题】鲜桔皮有以下哪些作用?
A.
有通气
B.
助消化
C.
润肠
D.
化痰止咳
【单选题】在减数分裂过程中,同源染色体要进行配对,形成联会复合体,这种现象出现在前期I的
A.
细线期
B.
偶线期
C.
粗线期
D.
双线期
E.
终变期
【多选题】肝调节血量,需哪两项的配合:
A.
肝主疏泄
B.
肝藏魂
C.
肝主藏血
D.
脾统血
E.
肺朝百脉
【判断题】减数分裂中染色体配对在双线期进行。( )
A.
正确
B.
错误
【判断题】在离开淘宝后,美丽说自谋生路的第一步是转型做B2C垂直电商。
A.
正确
B.
错误
【单选题】休日は混雑が予想されますので、お電話でご予約の 、ご来店ください
A.
あげく
B.
あまり
C.
うえ
D.
ほう
【单选题】在减数分裂过程中,同源染色体要进行配对,形成联会复合体,这种现象会出现在前期Ⅰ的
A.
偶线期
B.
粗线期
C.
双线期
D.
终变期
【单选题】我国公路无信号环形交叉口服务水平评价指标为( )。
A.
延误
B.
饱和度
C.
排队长度
D.
密度
【判断题】在离开淘宝后,美丽说自谋生路的第一步是转型做C2C垂直电商。
A.
正确
B.
错误
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