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Lớp 9   ||  Toán    Địa Lý    Tiếng Anh    Sinh Học    Vật lý    Hóa Học    Lịch Sử  

English 9 - Test 574
Read the passage and choose the best answer.


It is very important to have healthy teeth. Good teeth help us to chew our food. They also help us to look nice. How does a tooth go bad? The decay begins in a little crack in the enamed covering of the tooth. This happens after germs and bits of food have collected there. Then the decay slowly spreads inside the tooth. Eventually, poison goes into blood, and we may feel quite ill.
How can we keep our teeth healthy?. Firstly, we ought to visit our 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. Unfortunately, many people wait until they have toothache before they see a dentist.
Secondly, we should brush our teeth with a toothbrush and fluoride toothpaste at least twice a day- once after 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 fruit. Chocolate, 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.
Ngày làm bài: Hôm nay lúc 18:01:24 (Server time)
Số câu hỏi: 5.   Tổng điểm: 5
Yêu cầu hoàn thành: 60 phút.
Thời gian còn lại: 
Cỡ chữ câu hỏi:  Cỡ chữ đáp án:


1-
Good teeth help us to ................
  A - 
be nice
  B - 
have a good eyesight.
  C - 
chew our food
  D - 
be important
2-
When food and germs collect in a small crack, our teeth ............
  A - 
become hard
  B - 
begin to decay.
  C - 
send poison into the blood.
  D - 
makes us feel quite ill.
3-
A lot of people visit a dentist only when ..............
  A - 
their teeth grow properly
  B - 
they have holes in their teeth
  C - 
they have toothache
  D - 
they have brushed their teeth.
4-
We ought to try clean our teeth ...............
  A - 
once a day
  B - 
at least twice a day
  C - 
between meals
  D - 
before breakfast.
5-
We shouldn’t eat a lot of ...............
  A - 
red rice
  B - 
fresh fruit
  C - 
fish
  D - 
chocolate
 
[Người đăng: Đặng Vân Oanh -ST]
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