IV.Read the following passage, then answer the questions by circling A, B, C or D.

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 to 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 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 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. make 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 to 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

cho đoạn trích và trả lời câu hỏi

QUÊ HƯƠNG NỖI NHỚ

Trơ về tìm mái nhà quê

Tìm hình bóng mẹ bộn bề nắng mưa

tìm nắng xuyên ngọn cây dừa

Tìm hương mạ mới gió lùa thơm tho

Tìm đàn trâu với con đò

Áo bà ba mẹ câu hò trên sông

Nón lá nghiêng nắng nước ròng

miền quê khó nhọc con còng con cua

1,tìm PTBĐ chính

2,tìm biện pháp tu từ và nêu tác dụng

3,tìm từ ghép

4,nội dung