Câu hỏi:
1 năm trước

Read the passage carefully and choose the correct answer.

 KEEPING OUR TEETH HEALTHY

It’s very important to have healthy teeth. Good teeth help us chew our food. They also help us look nice. How does a tooth go bad? The decay begins in a little crack in the enamel covering of the tooth. This happens after germs and bit of food have collected there. Then the decay slowly spreads inside to the tooth. Eventually, poison goes into the blood, and we may feel quite ill.

How can we keep our teeth healthy? First, we ought to visit the dentist twice a year. He can fill the small holes in our teeth before they destroy the teeth. He can examine our teeth to check that they are growing in the right way.

Secondly, we should brush our teeth with a toothbrush and fluoride toothpaste at least twice a day-once after the breakfast and once before we go to bed. We can also use wooden toothpicks to clean between our teeth after a meal.

Thirdly, we should eat food that is good for our teeth and our body: milk, cheese, fish, brown bread, potatoes, red rice, raw vegetables, and fresh fruits. Chocolates, sweets, biscuits and cakes are bad, especially when we eat them between meals. They are harmful because they stick to our teeth and cause decay.

When food and germs collect in a small crack, our teeth ______.

Trả lời bởi giáo viên

Đáp án đúng: c

Tạm dich:

Khi thức ăn và vi trùng tích tụ trong một vết nứt nhỏ, răng của chúng ta ______.

A.trở nên cứng

B.gửi chất độc vào máu

C.bắt đầu phân rã

D.làm cho chúng ta cảm thấy khá khó chịu

Thông tin: 

The decay begins in a little crack in the enamel covering of the tooth. This happens after germs and bit of food have collected there.

(Sự phân rã bắt đầu trong một vết nứt nhỏ trong lớp men răng. Điều này xảy ra sau khi vi

trùng và một chút thức ăn đã bị giữ lại ở đó.)

Hướng dẫn giải:

Thông tin:  “The decay begins in a little crack in the enamel covering of the tooth. This happens after germs and bit of food have collected there.”

Câu hỏi khác

Câu 7:

Read the passage carefully and choose the correct answer.

Herbal Medicine

Everyone wants to be healthy. People see doctors. They take pIlls to stay healthy. However, plants have been used to heal for thousands of years. More and more people are trying herbs to stay healthy. Plants used to heal are called “herbal medicine". There are many plants used In herbal medicine. Each plant is used In a certain way. Herbal medicine works more slowly than most pills. Many people think plants are gentle on the body. There are a lot of examples of helpful plants. Ginger can help your body. Eating ginger often may help you stay healthy. Another helpful plant is parsley. It can stop bad breath. Herbs may be gentler than some pills. However, this does not mean that anyone can take them in any way. You should always be

careful. Some herbs can be harmful, too. Too much rosemary can be very bad for your stomach. It can make you sick. Foxglove is a very pretty flower. It also has poison in it. Nevertheless, If you are afraid of using herbs, you may be surprised.

You have probably already used  some kind of herbal medicine. Coffee, garlic, ginseng and peppermint are all used in herbal medicine. Herbal medicine is becoming popular again, as people become more interested in their health.

How does herbal medicine work?

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