III. READING
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 enamel 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.
1. Good teeth help us to
A. be nice
B. have a good eyesight C. chew our food
2. When food and germs collect in a small crack, our teeth,
A. become hard.
B. begin to decay.
D. makes us feel quite ill.
C. send poison into the blood.
3. A lot of people visit a dentist only when,
A. their teeth grow properly
C. they have toothache
4. We ought to try clean our teeth
A. once a day
5. We shouldn't eat a lot of
A red rice
IV.WRITING
B. they have holes in their teeth
D. they have brushed their teeth
B. at least twice a day
B. fresh fruit
C. between meals
C. fish
4.1 Rewrite the sentences so that it has a similar meaning to the first.
1. Lan is pretty but Mai is prettier
Mai is the
2. This is the best film I've ever seen.
I've
D. be important
D. before breakfast
D. chocolate
TEST 3