giao điểm O của hai đường thẳng a và b nằm ngoài phạm vi tờ giấy. Chỉ vẽ hình trong phạm vi tờ giấu, hãy vẽ đường thẳng d đi qua A sao cho đường thẳng d cũng đi qua O nếu kéo dài đường thẳng d ra ngoài phạm vi tờ giấy.

Bài 10: Cho các đa thức: A(x) = 5x - 2x⁴ + x³ -5  + x² ; B(x) = - x⁴  + 4x² - 3x³ + 7 - 6x; C(x) = x + x³ -2

            a) Tính A(x)  + B(x);                 b) A(x) - B(x) + C(x) 

            c) Chứng tỏ rằng x = 1 là nghiệm của A(x) và C(x) nhưng không phải là nghiệm của đa thức B(x).

xy + y²z² + z³x³  tại x = 1 : y = -1; z = 2

I. Rewrite the following sentences so that the second sentence means the same as the first one.

1. This boy works very hard , so he passes the exam very easily.

Because this boy……………………………………………..

2. It’s a good idea to eat a lot of fruits and vegetables everyday.

We should ………………………………………………..

3. An old woman feeds the pigeons. 

The pigeons ………………………

4. Everyone will love her.

She ……………………………..

5. Mr Hung lived in the country when he was a child.

- > Mr Hung used to ….

2. Some people will interview the new president on TV.

-> The new president …..

6. The distance from Ha Noi to Vinh is about 300 km.

 -> It is ………….

7. Although he is very rich, he isn’t happy

-> In spite of …..

8.People will use solar energy in the future.

-> Solar energy …………………………………….………………………….

9. They will build a hydro power station in this area next year.

-> A hydro power station ………………………………………………………

10. People will spend a lot of money on heating in the future.

-> A lot of money ………………………………………………………………..

11. Nam will buy a new dictionary tomorrow.

-> A new ditionary ………………………………………………………………

B. VOCABULARY AND GRAMMAR.

I. Choose the best answer.

1. Most teenagers are ..................... detective stories.

A. interested about       B. fond of        C. excited on            D. go on

2. Tan: It’s hot in here. - Lan: Ok. I .....................on the air conditioner.

A. turned                 B. to turn              C. turning                D. will turn

3. His mother won’t be at home tomorrow. ..................... .

A. Neither won’t he.     B. Either will he.     C. He won’t either.    D. He won’t.

4. I have temperature,____I feel tired.

A. and                  B. or                       C. but                           D. so

5. She looks very red. She was outdoors all day yesterday. I think she has ______.

A. sunburn           B. headache          C. toothache                 D. flu

6. My grandparents _____exercise in their free time.

A. play                B. collect               C. go                             D. do

7.If you buy flowers and put them in a vase to display in your house, your hobby is __

A. collecting flowers   B. arranging flowers   C. planting trees    D.bird-watching

8. They hate ________noodles. They prefer rice.

A. eating               B. eat                   C. eats                         D. ate

9. Excuse me! Is there a bus stop .....................here?

A. at                     B. near                 C. from                    D. with

10. The doctor examined him and .....................his temperature.

A. took                 B. made                C. did                    D. take

11. Her mother works.....................hours than her father does.

A. a few              B. less                   C. much                   D. more

12. .....................cards is one of Barry’s hobbies.

A. Collects          B. Collected           C. Collecting            D. Collector

13. Can you teach me ..................... “ thank you ” in Chinese?

A. how to say    B. how say            C. saying                    D. to say

14. Mary: .....................going swimming? → Clark: That would be great.

A. Shall we      B. How about           C. Let’s                     D. Shall you

15. I prefer swimming in the sea ..................... the pool.

A. at               B. on                      C. in                  D. to

16.Junk foods are high in fat, sodium and sugar, which can lead to ________.

A.fever                   B. allergy              C. obesity                          D. stomachache

17. My mother grows a lot of trees and vegetables because her hobby is …………..

A. gardening               B. swimming         C. camping                 D. singing

18. She often buys flowers and displays them in vases because she loves ……………. .

A. cooking                  B. gardening           C. running                  D. arranging flowers

19. If she goes out without wearing a hat, she will get …………………… .

A. stomachache           B. sunburn              C. spots                      D. toothache

20. A new hospital ……………………. in this town next month.

A. build                        B. will build         C. will be built                 D. built

21. You should spend more time  …………..  for your excams.

A. studying                    B. to study            C. studied                      D. study

22. I don't like chinese food very much. …………………………..
A. Neither don't I          B. I don't, too.         C. I don't, either             D. I do, too.        

II. Find and correct the mistakes in the following sentences.

1. Nobody like him because he always looks untidy.

                     A              B                C                   D

2. We should use fewer electricity to save money.

               A                B                     C               D

3.You shouldn’t take up a sport. It will make your health better.    

      A         B                                 C         D

4.Drink more water, but you will not be so thirsty.                                                                                         

   A                            B                        C            D

5.If you eat more sugar, you will lose your weight easily.                                                                                          

            A                      B                        C       D

C. Reading:

I.Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks\)

          We need calories or energy to do the things every day. For example, when we walk to school or (1) ………………..a bike to school we spend a certain amount of calories and even when we sleep, we also use them. But how many calories should we have a day to stay in shape? It’s difficult for us (2) …….. If people want to keep (3) …………….., they should remember that everyone should have between 1600 and 2500 calories a day.

          We get calories from the food we eat. If we get too many food and don’t take part in  any activities, we can get (4)………… quickly. So besides studying, we should do some (5)………….., play sports or do the housework, such as cleaning the floor, cooking etc.

1 . A. go       .           B. ride                         C. have            .           D. play

2.A to calculate      B.  calculate                  C.  calculating            D. calculated

3.. A. fit                 B. fat                             C. unhealthy.               D. good

 4.. A. thin              B. sunburnt                 C. fat                           D. sick

 5 A. exercise        B. homework                    C. volunteer           D. makeup

: Cho đoạn văn sau

…(1) Không gian yên tĩnh bỗng bừng lê những âm thanh của dàn hòa tấu, bởi bốn nhạc khúc lưu thủy, kim tiền, long hổ du dương, trầm bổng, réo rắt mở đầu đêm ca Huế. (2)Nhạc công dùng các ngón đàn trau chuốt như ngón nhấn, mổ, vỗ, vả, ngón bấm, day, chớp, búng, ngón phi, ngón rãi. (3) Tiếng đàn lúc khoan lúc nhặt làm nên tiết tấu xao động tận đáy hồn người.

a. Nêu ngắn gọn nội dung cơ bản của văn bản chứa đoạn trích trên?

b. Xác định câu có sử dụng nghệ thuật liệt kê và câu mở rộng thành phần trong đoạn văn đã cho .Chỉ rõ cụm C- V được dùng để mở rộng câu.

c. Theo em câu “Tiếng đàn lúc khoan lúc nhặt làm nên tiết tấu xao động tận đáy hồn người” có phải là câu bị động không? Vì sao?