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What is the strongest part of your body? Your head? Bones? It’s your teeth! There is a special thing called enamel (牙釉質) in teeth. It is the hardest thing in the human body and keeps bacteria (細菌) away. However, teeth are vulnerable (易受傷害的) to problems and disease. September 20 is National Teeth-loving Day in China. Let’s pay attention to the health of our teeth.
Tooth (1) are (1) around the world. Most children and young adults have tooth decay (齲齒). A study published on China Health Monthly magazine this year showed that 40.74 percent of a sample (抽樣) of 1,306 Chinese students under age 15 had decayed teeth.
(2)Food that is rich in sugar increases the risk of tooth decay. After you eat, bacteria go crazy over the sugar on your teeth, like ants at a picnic. The bacteria turn sugar into acids (酸) that eat away at tooth enamel.This cause holes in your teeth.
Another common problem is crooked teeth (齙牙). When your new teeth begin to grow and the old teeth haven’t fallen out, there isn’t enough space for the new ones. This causes crooked teeth.
Don’t worry. Here are some ways to keep your teeth healthy.
Brush at least twice a day – in the morning and before bedtime.
Learn to use dental floss (牙線). The floss gets rid of food that’s hidden where your toothbrush can’t get it.
Visit a dentist. He or she can check if you have any dental problems and help you clean your teeth.
Pay attention to what you eat. It is better to eat lots of fruits and vegetables instead of fries and drink water instead of soda.
Wear braces (牙套) to make your teeth straight and beautiful.

小題1:在（1）處的空白處分別填入一個適當的詞使句意完整、上下文通順。
小題2:將（2）句譯成中文。
小題3: 回答問題：How many ways to keep your teeth healthy are mentioned in the passage?
小題4:在文中找出與 Most kids and young people have decayed teeth.意思相同或相近的句子，并將它寫在答題卡上。
小題5: 在文中找出最能表達該短文主題的句子，并將它寫在答題卡上。

小題1:problems, common
小題2:富含糖分的食物增加了患齲齒的風險。
小題3:5
小題4:Most children and young adults have tooth decay.
小題5:Let’s pay attention to the health of our teeth.

試題分析：短文大意：牙齒問題是世界上的一個普遍的問題。在中國九月二十日是全國愛牙日。讓我們關注我們的牙齒健康吧。本文提供了一些方法來保持你的牙齒健康。一天至少刷牙兩次。學會使用牙線�？囱泪t。注意你吃的東西。帶牙套使你的牙齒直而美麗。
小題1:根據后文Most children and young adults have tooth decay (齲齒). A study published on China Health Monthly magazine this year showed that 40.74 percent of a sample (抽樣) of 1,306 Chinese students under age 15 had decayed teeth.可推知此處是在說牙齒問題是世界上的一個普遍的問題，所以可在空白處填寫problems, common。
小題2:富含糖分的食物增加了患齲齒的風險。
小題3:根據文中談到的保持你的牙齒健康的方法有： Brush at least twice a day. Learn to use dental floss (牙線). Visit a dentist. Pay attention to what you eat. Wear braces (牙套) to make your teeth straight and beautiful.可知該作答：5。
小題4:Most kids and young people have decayed teeth 的意思是大多數孩子和年輕人有蛀牙，在文中的句子Most children and young adults have tooth decay.和它意思相同。
小題5:本文旨在告訴人們要注意牙齒健康問題，所以文中句子Let’s pay attention to the health of our teeth. 最能表達該短文的主題。

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