Bài 1 : Tính nhanh \(\left(1-\frac{1}{2}\right).\left(1-\frac{1}{3}\right).\left(1-\frac{1}{4}\right)...\left(1-\frac{1}{2011}\right)\)
Bài 2 : Cho biểu thức A = \(\frac{19}{n+2}\)
a) Số nguyên n phải có điều kiện gì để A là phân số
b) Tìm n để A là số nguyên
Bài 3 : Tìm phân số \(\frac{a}{b}\) bằng phân số \(\frac{18}{27}\) , biết UWCLN (a,b) = 13
EX 7. Read the passage and answer the questions below
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 flouride tooth paste 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 such as 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. How often should we visit our dentist a year?
……………………………………………………………………………………..
2. What should we brush our teeth with?
………………………………………………………………………………………
3. What else we can use to clean between our teeth after a meal?
………………………………………………………………………………………….
4. What kinds of food are good for our teeth?
……………………………………………………………………………………………..
5. What kinds of food are bad for our teeth?
……………………………………………………………………………………………..
EX 6. Reoder
1. accident/ an/ she’s/ in/ because/ hospital/ she/ had.
………………………………………………………………………………………….
2. but/ they/ many/ work/ don’t/ hours/ they/ have/ money/ much.
…………………………………………………………………………………………..
3. asked/ Paul/ me/ question,/ a/ replied/ I / so.
…………………………………………………………………………………………..
4. buy/ I/ peppers/ potatoes. / and/ tomatoes,
……………………………………………………………………………………………
5. them/ apple/ can/ have/ an/ or/ a/ ./ She/ have/ both/ ./ She/ mango/ can’t/ of
…………………………………………………………………………………………
6. can/ piano/ . / Karthik/ play/ but/ he/ play/ the/ can’t/ the/ violin
……………………………………………………………………………………………
7. hard – working/ is/ but/ her/ is/ lazy/ ./ She/ very/ brother
………………………………………………………………………………………..
8. clever/ is/ and/ beautiful/ . / She
………………………………………………………………………………………
9. shirt/ can/ the/ blue/ or/ take/ green/ shirt/ . / You/ the
…………………………………………………………………………………………..
10. am/ sister/ talk/ I/ short/ . / My/ is/ but
…………………………………………………………………………………………….
EX 5. Make the questions for underlined information
1. Minh usually takes exercises after getting up.
……………………………………………………………………………….
2. I brush my teeth twice a day.
……………………………………………………………………………..
3. Nga has an appointment at 10.30 this morning.
……………………………………………………………………………………………..
4. They live in the city center.
………………………………………………………………………………..
5. I like “Tom and Jerry” because it’s very interesting.
…………………………………………………………………………………….
6. She is worried about the next examination.
……………………………………………………………………………………
7. Music makes people different from all other animals.
…………………………………………………………………………………….
8. They do their homework at night.
…………………………………………………………………………………..
9. I like the red blouse, not the blue one.
…………………………………………………………………………………………..
10. That is an English book.
………………………………………………………………………………………..
11. He studies piano at the university.
…………………………………………………………………………………………..
12. My father is a teacher.
……………………………………………………………………………………………….
13. My favorite musician is Trinh Cong Son.
……………………………………………………………………………………………….
14. We take a holiday once a year.
……………………………………………………………………………………………….
15. It takes four hours to get there.
……………………………………………………………………………………………
EX4. Make full sentences
1. Which soup/ you/ like? - I/ like/ chicken soup
………………………………………………………………………………………
2. Where/ Ann/ usually/ go/ in the evening? - She/ usually/ go/ to the cinema.
……………………………………………………………………………………………..
3. Who/ Carol and Bill/ visit/ on Sundays? - They/ visit/ their grandparents.
……………………………………………………………………………………………..
4. What/ David/ usually drink/ with/ his breakfast? - He/ usually/ drink/ coffee.
…………………………………………………………………………………………….
5. When/ you / watch TV? - I / watch TV/ in the evening.
…………………………………………………………………………………….
6. Why/ Rachel/ stay/ in bed? - She/ stay/ in bed/ because/ she/ be/ sick.
……………………………………………………………………………………………….
7. How/ you/ go/ to the office? - I/ go/ to the office/ by bicycle.
……………………………………………………………………………………..
8. Whose laptop/ your sister / carry? - She / carry/ mine.
…………………………………………………………………………………………….
EX 1. Choose the best answer
1. I like English………I like French very much.
A. and B. but C. or D. so
2. My brother likes maths…….he doesn’t like history.
A. and B. but C. or D. so
3. The children forgot their homework, ……..the teacher was angry with them.
A. and B. but C. or D. so
4. Can you read…….write English words?
A. and B. but C. or D. so
5. Are the questions right……………..wrong?
A. and B. but C. or D. so
6. It’ s great……………it’s fun.
A. and B. but C. or D. so
7. Would ou like tea……..hot chocolate for your breakfast?
A. and B. but C. or D. so
8. Our car is old, ……..it drives beautifully.
A. and B. but C. or D. so
9. It was very warm,……………we all went swimming.
A. and B. but C. or D. so
10. Do we have French…….music after the break?
A. and B. but C. or D. so
EX2. Matching
A B
1. We wanted to go to the show Because they are quick and easy .
2. I often make omelettes Although they are not film very healthy
3. Shall we go to the cinema? And watch that film you were talking about.
4. Burgers are very tasty But there weren’t any seats left.
5. My neighbors are friendly Or at the football match?
6. Do you know if he’s at home Because he laughs in his sleep.
7. Pick me up early, please? But they are noisy.
8. We know he has great dreams. So we don’t get there late.
EX 3. Rewrite these sentences
1. I don’t eat cheese. I don’t eat butter. (or)
…………………………………………………………………..
2. I like him. He’s annoying. (but)
…………………………………………………………………..
3. We’re having salad for lunch. We’re not very hungry. (so)
………………………………………………………………………………….
4. She doesn’t use much suncream. She has very pale skin. (although)
………………………………………………………………………………………
5. This tear, he’s been to China. He has also been to Brazil. (and)
………………………………………………………………………………
6. Would you like to go to Paris? Would you rather go to Budapest? (or)
……………………………………………………………………………….
7. He’s very tired today. He went to bed very late last night. (because)
……………………………………………………………………………….
8. It looks very near. It’s quite a long way away. (although)
…………………………………………………………………………………
EX4. Make full sentences
1. Which soup/ you/ like? - I/ like/ chicken soup
………………………………………………………………………………………
2. Where/ Ann/ usually/ go/ in the evening? - She/ usually/ go/ to the cinema.
……………………………………………………………………………………………..
3. Who/ Carol and Bill/ visit/ on Sundays? - They/ visit/ their grandparents.
……………………………………………………………………………………………..
4. What/ David/ usually drink/ with/ his breakfast? - He/ usually/ drink/ coffee.
…………………………………………………………………………………………….
5. When/ you / watch TV? - I / watch TV/ in the evening.
…………………………………………………………………………………….
6. Why/ Rachel/ stay/ in bed? - She/ stay/ in bed/ because/ she/ be/ sick.
……………………………………………………………………………………………….
7. How/ you/ go/ to the office? - I/ go/ to the office/ by bicycle.
……………………………………………………………………………………..
8. Whose laptop/ your sister / carry? - She / carry/ mine.
…………………………………………………………………………………………….
EX 5. Make the questions for underlined information
1. Minh usually takes exercises after getting up.
……………………………………………………………………………….
2. I brush my teeth twice a day.
……………………………………………………………………………..
3. Nga has an appointment at 10.30 this morning.
……………………………………………………………………………………………..
4. They live in the city center.
………………………………………………………………………………..
5. I like “Tom and Jerry” because it’s very interesting.
…………………………………………………………………………………….
6. She is worried about the next examination.
……………………………………………………………………………………
7. Music makes people different from all other animals.
…………………………………………………………………………………….
8. They do their homework at night.
…………………………………………………………………………………..
9. I like the red blouse, not the blue one.
…………………………………………………………………………………………..
10. That is an English book.
………………………………………………………………………………………..
11. He studies piano at the university.
…………………………………………………………………………………………..
12. My father is a teacher.
……………………………………………………………………………………………….
13. My favorite musician is Trinh Cong Son.
……………………………………………………………………………………………….
14. We take a holiday once a year.
……………………………………………………………………………………………….
15. It takes four hours to get there.
……………………………………………………………………………………………
EX 6. Reoder
1. accident/ an/ she’s/ in/ because/ hospital/ she/ had.
………………………………………………………………………………………….
2. but/ they/ many/ work/ don’t/ hours/ they/ have/ money/ much.
…………………………………………………………………………………………..
3. asked/ Paul/ me/ question,/ a/ replied/ I / so.
…………………………………………………………………………………………..
4. buy/ I/ peppers/ potatoes. / and/ tomatoes,
……………………………………………………………………………………………
5. them/ apple/ can/ have/ an/ or/ a/ ./ She/ have/ both/ ./ She/ mango/ can’t/ of
…………………………………………………………………………………………
6. can/ piano/ . / Karthik/ play/ but/ he/ play/ the/ can’t/ the/ violin
……………………………………………………………………………………………
7. hard – working/ is/ but/ her/ is/ lazy/ ./ She/ very/ brother
………………………………………………………………………………………..
8. clever/ is/ and/ beautiful/ . / She
………………………………………………………………………………………
9. shirt/ can/ the/ blue/ or/ take/ green/ shirt/ . / You/ the
…………………………………………………………………………………………..
10. am/ sister/ talk/ I/ short/ . / My/ is/ but
…………………………………………………………………………………………….
EX 7. Read the passage and answer the questions below
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 flouride tooth paste 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 such as 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. How often should we visit our dentist a year?
……………………………………………………………………………………..
2. What should we brush our teeth with?
………………………………………………………………………………………
3. What else we can use to clean between our teeth after a meal?
………………………………………………………………………………………….
4. What kinds of food are good for our teeth?
……………………………………………………………………………………………..
5. What kinds of food are bad for our teeth?
……………………………………………………………………………………………..
Câu 1: Cư dân thuộc văn hoá Đông Sơn là người:
A. Lạc Việt B. Chăm pa
C. Phù Nam D. Cả A, B, C đều đúng
Câu 2: Nước Văn Lang ra đời vào thời gian nào?
A. Thế kỉ IV TCN C. Thế kỉ VI TCN
B. Thế kỉ V TCN D. Thế kỉ VII TCN
Câu 3: Nhà nước Văn Lang chưa có luật pháp và quân đội là:
A. Đúng B. Sai
Câu 4: Âu Lạc rơi vào ách đô hộ của nhà Triệu thời gian nào?
A. Năm 207 TCN C. Năm 179 TCN
B. Năm 111 TCN D. Cả A, B, C đều sai
Câu 5: Đền thờ An Dương Vương được xây dựng tại đâu?
A. Bạch Hạc ( Việt Trì) C. Cổ Loa ( Hà Nội)
B. Phong Châu ( Phú Thọ) D. Cả A, B, C đúng
Câu 6: Các công trình văn hoá tiêu biể thời Văn Lang Âu Lạc
A. Trống đồng C. A, B đúng
B. Thành Cổ Loa D. A, B sai
Câu 7: Thành Cổ Loa được xây dựng ở:
A. Phong Khê ( Đông Anh – Hà Nội) C. Bạch Hạc ( Việt Trì)
B. Mê Linh ( Hà Nội) D. Phong Châu ( Phú Thọ)
Câu 8: Truyện truyền thuyết nào phản ánh truyền thống quật cường chống ngoại
xâm của tổ tiên ta:
A. Sơn Tinh – Thuỷ Tinh C. Thánh Gióng
B. Bánh chưng, bánh giày D. Cả A, B, C đúng
Câu 9: Ngôi sao nhiều cánh giữa mặt trống đồng của cư dân Văn Lang tượng trưng
cho:
A. Thần mặt trời C. Thần mặt trăng
B. Thần đất D. Cả A, B, C đúng
Câu 10: Thời Văn Lang - Âu Lạc để lại cho chúng ta:
A. Tổ quốc, phong tục tập quán
B. Thuật luyện kim, nông nghiệp trồng lúa nước
C. Bài học đầu tiên về công cuộc giữ nước
D. Cả A, B, C đúng
Câu 11: Nhà nước đầu tiên Được thành lập vào thời gian nào ?
A. Thế kỉ VII B. Thế kỉ V Trước công nguyên
C. Thế kỉ VII Trước công nguyên D. Thế kỉ V
Câu 12: Ai đứng đầu nhà nước văn Lang ?
A. Hùng Vương B.Thục Phán C .Lạc hầu D.Lạc tướng
Câu 13: Kinh đô nước văn Lang ở đâu ?
A. Phong Khê ( Cổ Loa –Đông Anh –Hà Nội )
B. Phong châu ( Bạch Hạc –Phú Thọ )
C. Thăng Long ( Hà Nội )
D. Sài Gòn
Câu 14 Hãy điền vào ý còn thiếu trong các câu sau.
- Nhà Tần đánh xuống phương Nam để (1) ……………………………...........
- Sau 4 năm chinh chiến, quân Tần kéo đến vùng Bắc Văn Lang, nơi người Lạc
Việt cùng sống với (2) ………………….
- Người Âu Việt – Lạc Việt tôn (3) …………………… lên làm tướng để đánh
đuổi quân Tần.
- Người Việt đã đại phá quân Tần, giết được (4) …………………………………
Câu 15 Hãy nối sự kiện lịch sử ở cột A với thời gian cột B cho đúng.
Cột A Cột B
1. Nhà Tần đánh xuống phương Nam a/ Năm 218 TCN
2. Triệu Đà đánh xuống Âu Lạc b/ Năm 214 TCN
3. Thục Phán tự xưng là An DươngVương c/ Năm 207 TCN
4. Nước Âu Lạc rơi vào tay của Triệu Đà d/ Năm 179 TCN