c) x\(^5\)+x+1
= x\(^5\) - x\(^2\) +x\(^2\) + x + 1
= ( x\(^5\) - x\(^2\) ) + (x\(^2\) + x + 1)
= x\(^2\)(x\(^3\) - 1) + (x\(^2\) + x +1)
= x\(^2\)(x - 1)(x\(^2\) + x +1) + (x\(^2\) + x + 1)
= (x\(^2\) + x + 1)[x\(^2\)(x - 1) +1]
1. ......... Khmer's costume are very beautiful and unique.
A, a
B, an
C, the
D, x
2. The Muong in Hoa Binh are well-known ......... their rich folk literature.
A, of
B, for
C, about
D, with
Viết đoạn văn khoảng từ 80-100 từ nói về một phong tục " lì xì " ở Việt Nam .☹✔
I. Choose the word which has the underlined part pronounced differently from the rest
1. A. mAnner B. pAlm C. pAss D. shArp
2. customS B. traditionS C. opinionS D. forkS
3. A. watchED B. passED C. visitED D. talkED
4. A. accEpt B. rEflect C. gEneration D. sEnse
5. A. clOckwise B. cOmpliment C. cOurse D. Offspring
Chọn từ thích hợp trong dấu ngoặc:
1. The mother wrapped the baby (under/on/in) a blanket.
2. Do you usually accept a compliment (with/by/in) a smile?
3. They are standing (on/in/along) a row to buy tickets for the concert.
4. Do you wear ao dai (at/during/on) special occasions?
5. They arrived (on/at/in) the first day of March, 2015.
6. I'd like to learn (on/about/for) Thai culture.
7. The custom (about/of/for) naming women after flowers is becoming less common.
8. It is the custom (for/by/with) a man to open the door to let a woman in.
I. Choose the word having the underlined part pronounced differently in each line.
| 1. A. sprịng | B. strịpe | c. strịct | D. newsprịnt |
| 2. A. stranger | B.sprag | c. astronaut | D. misprogramme |
| 3. A. espresso | B. pedestrian | c. strength | D. respray |
| 4. A. stroll | B. overspread | c. disprove | D. stroke |
| 5. A. sprung | B. trustrate | c. structure | D. spruce |
Rewrite and complete the sentences using "should".
1. It's a good idea to wear a warm coat.
=> You
2. My advice is to leave early.
=> I think you
3. It's a good idea to take more exercise.
=> You
4. In my opinion, it's a good idea for you to read a lot.
=> I think
5. It's a good idea to do that.
=> You
6. My advice is for you to ride a bike.
=> I think
7. If I were you, I would buy a dog.
=> I think
II. Choose A, B,C or D that best completes each sentence
1. there are plently of potatoes in the fridge. you ....... buy any
A. needn't B. mustn't C. may not D. shouldn't
2. we are in the hospital. you ...... smoke here.
A. needn't B. mustn't C. may not D. don't have to
3. he had been working for more than 11hours. he ........ be tired now.
A. need B. had better C. must D. could
4. I ...... speak Arabic fluently when I was a child and we lived in Morocco.
A. might B. can C. must D. mustn't
5. the teacher said we ..... read this book for our pleasure because it's optional.
A. should B. must C. needn't D. can
6. If you want to speak English fluently, you ........ to work hard.
A. could B. need C. needn't D. mustn't
7. take an umbrella. it .... rain later.
A. need B. should C. might D. mustn't
8. small objects .... be swallowed by children.
A. may B. must C. need D. mustn't
9. in this city, people ......... walk on grass.
A. couldn't B. mustn't C. needn't D. may not
10. .......... I ask a question? yes, of course.
A. must B. may C. should D. will
I. Choose A, B,C or D that best completes each sentence
1. there are plently of potatoes in the fridge. you ....... buy any
A. needn't B. mustn't C. may not D. shouldn't
2. we are in the hospital. you ...... smoke here.
A. needn't B. mustn't C. may not D. don't have to
3. he had been working for more than 11hours. he ........ be tired now.
A. need B. had better C. must D. could
4. I ...... speak Arabic fluently when I was a child and we lived in Morocco.
A. might B. can C. must D. mustn't
5. the teacher said we ..... read this book for our pleasure because it's optional.
A. should B. must C. needn't D. can
6. If you want to speak English fluently, you ........ to work hard.
A. could B. need C. needn't D. mustn't
7. take an umbrella. it .... rain later.
A. need B. should C. might D. mustn't
8. small objects .... be swallowed by children.
A. may B. must C. need D. mustn't
9. in this city, people ......... walk on grass.
A. couldn't B. mustn't C. needn't D. may not
10. .......... I ask a question? yes, of course.
A. must B. may C. should D. will
1. Participating in the Lim festival is one the most.........events in my life. ( memory)
2. This is a ........ festival in VN. (year)
3. When do the ....... for the festival begin? (prepare)
4. Among many traditional activities at the Hung King Temple Festival, I was the most interested in the Xoan singing.......... (perform)
5. At the beginning of the festival, people have to do a welcome................. (rite)
