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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 advice for you to take care of your teeth.
● 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(快餐), too.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
Brush all your teeth, not just the front ones. Spend time brushing teeth along the sides and back of your mouth. Brush away from your gums(齒齦), 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 tooth brush, be sure it has soft bristles(鬃毛).
● 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 the teeth. Flossing can help get rid of it. Carefully move the floss between two teeth, up and down. You need to floss your teeth at least once a day.
● Have good eating habits.
You need to be careful about what you eat and drink. Eating sugar is a major cause of tooth decay(腐朽). Eating sugar before you go to bed can make things even worse. Eat lots of fruit and vegetables and drink water instead of soda.
小題1:           is helpful to your teeth.
A.Eating fruit and vegetablesB.Eating sweet snacks
C.Eating sugarD.Drinking soda
小題2: Which is the right way of brushing the teeth?
A.We should brush our teeth once a day.
B.We should keep our toothbrush away from our gums.
C.When we brush our teeth, at least three minutes is needed.
D.Brush our teeth before breakfast.
小題3: From the passage, do you know how to floss the teeth?
A.Go to see a dentist.B.Fix a floss on the teeth.
C.Move the floss between two teeth.D.Chew the floss in the mouth.
小題4:Which of the following is NOT true ?
A.Flossing can help get ride of the food that hides between two teeth.
B.Healthy teeth can help you look more beautiful.
C.We don’t have to brush our teeth if we eat a lot of fruit and vegetables.
D.Your toothbrush should be changed every three months.
小題5: The best title for the passage is          .
A.How to floss your teeth.
B.How to have good eating habits.
C.How to brush your teeth.
D.How to take care of your teeth.
小題1:A小題1:C小題1:C小題1:C小題1:D

小題1:細(xì)節(jié)題:從最后一段的句子:Eat lots of fruit and vegetables and drink water instead of soda.可知選A。
小題1:細(xì)節(jié)題:從文章的句子:Spend at least three minutes each time you brush.可知答案是C
小題1:細(xì)節(jié)題:從文章的句子:Carefully move the floss between two teeth, up and down.可知答案是C
小題1:細(xì)節(jié)題:從文章的句子:Brush your teeth at least twice a day after breakfast and before bedtime. If you can, brush after lunch or after sweet snacks(快餐), too.可知吃完蔬菜和水果也要刷牙。選C
小題1:主旨題:從文章的句子:Here are some advice for you to take care of your teeth.可知文章是如何保護(hù)你的牙齒。選 D
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First of all, emotions affect our time-keeping abilities: Negative emotions, especially anxiety and boredom, make time seem longer because they make us concentrate more on the passage of time. However, when we are enjoying ourselves, we pay more attention to what we are doing and are likely to lose track of(失去對(duì)….的意識(shí)) time.
Here is another example. In 2007, a group of scientists carried out a test. In the test, people fell 50 meters into a safety net and were then asked about their experience. Although the experience took shorter than 3 seconds, the people thought it was much longer than it actually was.
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Another situation when we make mistakes about time is when we take afternoon naps(午覺). Have you ever had trouble telling what time it is after a long nap? That's because the best amount of time for a nap is 20 minutes. After 20 minutes, you enter a new stage of sleep called slow-wave sleep. If you wake up mid-way in this stage, it will take a while before you can correctly perceive(感知) time again.
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A.Our bodies will produce a chemical called adrenaline.
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C.Adrenaline will make us concentrate better to stay alive.
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B.When we are enjoying ourselves, we pay more attention to what we are doing and we are able to feel like time is going more slowly.
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