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Ẩn danh
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subjects
14 tháng 12 lúc 19:25

Complete the sentences with suitable forms of the words given in the brackets.
61. It is not easy to do these exercises unless you listen attentively to the teacher. (If)
➔ If you don’t listen attentively to the teacher, it will not be easy to do these exercises.
62. If you get enough sleep, you will stay healthy. (Unless)
➔ Unless you get enough sleep, you won’t stay healthy.
63. People should be fully aware of their personal identity or they will easily lose their motivation in life. (Unless)
➔ Unless people are fully aware of their personal identity, they will easily lose their motivation in life.
64. Unless you do this now, you will regret it. (If)
➔ If you don’t do this now, you will regret it.
65. I will feel bored if my best friend doesn't come to the party with me. (Unless)
➔ Unless my best friend comes to the party with me, I will feel bored.

 

subjects
14 tháng 12 lúc 19:25

Make questions for the underlined words.
66. The Elephant Race Festival is usually held in Don Village.
➔ Where is the Elephant Race Festival usually held?
67. Thirteen elephants joined the elephant race on March 12 in Lak District.
➔ How many elephants joined the elephant race on March 12 in Lak District?
68. The Perfume Pagoda is about 70 kilometers away from Hanoi.
➔ How far is the Perfume Pagoda from Hanoi?
69. The Tay don't allow guests to sit in the room of their altar because that room is such a sacred place.
➔ Why don’t the Tay allow guests to sit in the room of their altar?
70. Some ethnic groups lived a semi-nomadic life decades ago.
➔ How did some ethnic groups live decades ago?

 

subjects
14 tháng 12 lúc 19:25

Write in full sentences using the given words.
71. Martial arts/ originate/ the East.
➔ Martial arts originated in the East.
72. Young rice cake/ a specialty/ this area.
➔ Young rice cake is a specialty of this area.
73. You should/learn/ Vietnamese table manners/ part/ Vietnamese culture.
➔ You should learn Vietnamese table manners as part of Vietnamese culture.
74. We/ have/ a family/ reunion/ next week.
➔ We will have a family reunion next week.
75. If Sarah / not be / ready / by 8 a.m /I/go/without her.
➔ If Sarah is not ready by 8 a.m, I will go without her.
76. He/learn/quickly / if/ he / practice / frequently.
➔ He will learn quickly if he practices frequently.
77. They/ not miss / the flight/ if they/be/ in a hurry.
➔ They will not miss the flight if they are in a hurry.

beiu_li
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Ta có: \(x^3-4x^3=-4x\)

=>\(-3x^3=-4x\)

=>\(3x^3=4x\)

=>\(3x^3-4x=0\)

=>\(x\left(3x^2-4\right)=0\)

=>\(\left[{}\begin{matrix}x=0\\3x^2-4=0\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=0\\x^2=\dfrac{4}{3}\end{matrix}\right.\)

=>\(\left[{}\begin{matrix}x=0\\x=\dfrac{2\sqrt{3}}{3}\\x=-\dfrac{2\sqrt{3}}{3}\end{matrix}\right.\)

Ẩn danh
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Sinh Viên NEU
Hôm qua lúc 15:16

42 C

Read the following passage and circle the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks.

Communal House (Rong House)

The Rong House can only be (44)____ in villages to the north of the Central Highlands, especially in Gia Lai and Kon Tum provinces. It is a large, imposing, beautifully decorated stilt house built (45) ____ the middle of the village. It is where community activities (46) ____, meetings, wedding ceremonies, or praying ceremonies. It is also the place for reception of guests. The Rong House of each ethnic group has its own architectural style, design, and decor, yet it shares some (47)____.  In the village, it is often (48)____house roofed with patterns of bright colours, depicting big wood columns.

44. A. found                 B. finding              C. to find                     D. find

45. A. in                       B. at                       C. on                           D. under

46. A. take on              B. take place          C. occurs                     D. happens

47. A. cultures             B. features              C. customs                  D. designs

 48. A. a biggers          B. a big                   C. biggest                    D. the biggest

Read the following passage and circle the letter A, B, C, or D to indicate the correct answer to each of the questions.

Although there are various wedding styles in America, most weddings still follow certain traditions. One of those is an old saying that dates back to 19th century England about what a bride should wear or carry: "Something old, something new, something borrowed, something blue." A bride wears something old to remind her of her family and the past. Some brides wear their mother's wedding dress or a piece of her jewelry. Something new means good luck and hope for a happy future with her new husband. Again, this item may be the dress, but often it is a pair of new shoes. Something borrowed such as a friend's handkerchief or a married friend's bridal veil means the bride has friends and family who are willing to help her. Something blue is a symbol of trust and faith between the couple. These days, some brides are creative with this item by painting their fingernails a light blue color or wearing a garter on their leg. Another tradition says that the groom should take the garter after the ceremony and throw it to the single men. The man who catches it will be the next one to get married.

 49. What is the text mainly about?

A. Various types of weddings.            

B. Wedding traditions and their meaning.

C. What should be worn on your wedding day.                

D. How to plan a traditional wedding

50. To remind her of the past, the bridge might _____________

A. wear a pair of new shoes.                                    B. carry a friend's handkerchief.

C. wear her mother's wedding dress.                        D. paint her fingernails a light blue color.

51. The word "it" in line 6 refers to _____________.

A. a pair of shoes                       B. luck                   C. item                   D. future

52. The word "willing" in paragraph 2 is CLOSEST in meaning to _____________.

A. reluctant                                B. pleased              C. unhappy            D. careful

53. Why do some brides wear a blue garter on their leg?

A. Because too many brides paint their fingernails a light blur color.

B. Because it is a symbol of trust and faith between the bride and the groom.

C. To show how the couple can be lucky in their marriage.

D. To show how popular something blur is in a wedding.

54. The word "faith" in paragraph 2 is OPPOSITE in meaning to _____________.

          A. lotalty                          B. belief                 C. disbelief            D. hope

Four phrases/sentences have been removed from the text below. For each question, mark the letter A, B, C, or to indicate the correct option that best fits each of the numbered blanks.

Vu Lan Festival takes place on the 15th of the seventh lunar month. (55)____C__. Vietnamese people consider that it is an occasion for family gatherings as well as expressing love and gratitude to ancestors and parents. Vu Lan festival is known as Mother's Day in Viet Nam. (56) __B__,a lavish tray with various offering food is set on the altar, and the householder will bum incense and invite ancestors to come back home and celebrate with family. Then, at night the Vietnamese hold a ceremony of releasing lighted lanterns on the river, (57) ____A__ They also go to the pagoda, (58) _D____ if their mothers are still alive or white roses if their mothers passed away.

A. Wearing either a red rose

B. First, in the morning of that day

C. It is one of the largest festivals of Viet Nam

D. They believe by doing that their wishes for their parents will come true

 

Ẩn danh
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subjects
14 tháng 12 lúc 19:27

11C 12A 13C 14B 15C
16B 17D 18B 19B 20A
21C 22B 23A 24C 25C
26C 27A 28C 29C 30B

Sinh Viên NEU
Hôm qua lúc 15:25

11. ________  is the population of the Jrai? It's 513,930 (2019)

           A. Which                    B. Who                          C. What         D. How

12.- ________ do you hold a family reunion? On the first day of Tet

          A. When                     B. Who                         C. What            D. How

13. ________can you find terraced fields? - In Sapa.

          A. Which                    B. Who                          C. Where         D. How

14. ________ethnic groups are there in Vietnam? 54

         A. How often              B. How many               C. How much        D. How long

15. ________colours like blue and yellow can make people feel happy.

        A. A lot                        B. Any                         C. Some               D. A

16. I always ________ my parents had a long and happy life.

       A. make                       B. wish                         C. celebrate          D. have

17. I don't have ________homework to do at Tet.

       A. a little                 B. many                         C. a                  D. any

18. The first person to visit our home at Tet is the ________.

      A. newcomer            B. first footer                C. stranger        D. neighbour

 19. ________do they buy ornament trees and flowers? For decorations and offerings

      A. What                    B. Why                           C. When         D. How

20. It is considered to be________ to turn up for dinner on time in Tanzania, you should be 15 minutes late

      A. rude                      B. polite                           C. modern     D. suitable

Sinh Viên NEU
Hôm qua lúc 15:34

21. It is typical of the culture life of ________Thai people.

A. some                          B. a                                   C. the            D. an

22. Viet Nam ________Tet according to the lunar calendar.

A. decorates                  B. celebrates                     C. makes        D. does

23. Would your sister like ________to make banh chung?

A. to learn                    B. learning                        C. learn           D. learns

24. My grandma will cook banh chung- our special ________at Tet.

A. flower                     B. meal                             C. food             D. sweets

25. Learning ________can help build physical strength and improve confidence.

A. physics                   B. lesson                          C. martial arts    D. chemistry

26. If you work hard all night, you ________very tired tomorrow

A. are                          B. were                             C. will be          D. would be

27. There'll always be a conflict between ________old and ________ young.

A. the- the                   B. an-a                              C. an- the          D. the- a

28. We will have an occasion to visit our ________during Tet.

A neighbours              B. teachers                        C. relatives       D. friends

29. In Viet Nam, Tet is a good time for family _______.

A. cookings               B. preparings                     C. gatherings     D. sayings

30. Lunar New Year, or Tet, is the longest _______in Viet Nam.

A. activity                 B. holiday                           C. ceremony     D. anniversary

Ẩn danh
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Hùng
14 tháng 12 lúc 20:47

PRONUNCIATION

1.A. center

2.B. gong

3.C. longevity

4.D. broccoli

5.C. online

 STRESS PATTERN

6.C. important

7.D. behaviour

8.B. fortune

9.B. bamboo

10.B. lifestyle

Sinh Viên NEU
Hôm qua lúc 16:10

1 A

2 A

3 C

4 C

5 D

Sinh Viên NEU
Hôm qua lúc 16:10

6 D

7 B

8 A

9 C

10 B

Ẩn danh
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subjects
14 tháng 12 lúc 19:31

a. thể tích khối gỗ hình lập phương là:

V = a x a x a = 50 x 50 x 50 = 125000 (cm3) = 0,125 m3

khối lượng riêng khối gỗ là:

D = m/V = 25/0,125 = 200 (kg/m3)

b. khối lượng riêng của gỗ ko thay đổi

Ẩn danh

a: Xét ΔIAM và ΔICN có

\(\widehat{IAM}=\widehat{ICN}\)(hai góc so le trong, AB//CD)

AM=CN

\(\widehat{IMA}=\widehat{INC}\)(hai góc so le trong, AB//CD)

Do đó: ΔIAM=ΔICN

b: Xét tứ giác AMCN có

AM//CN

AM=CN

Do đó: AMCN là hình bình hành

c: ta có: ΔIAM=ΔICN

=>IA=IC

=>I là trung điểm của AC

ABCD là hình bình hành

=>AC cắt BD tại trung điểm của mỗi đường

mà I là trung điểm của AC

nên I là trung điểm của BD

=>B,I,D thẳng hàng

Ẩn danh

a: B=1

=>\(\dfrac{3}{x^2-1}=1\)

=>\(x^2-1=3\)

=>\(x^2=4\)

=>\(\left[{}\begin{matrix}x=2\\x=-2\end{matrix}\right.\)

b: \(A=\left(\dfrac{x+2}{x+1}-\dfrac{x-2}{x-1}\right)\cdot\dfrac{x+1}{x}\)

\(=\dfrac{\left(x+2\right)\left(x-1\right)-\left(x-2\right)\left(x+1\right)}{\left(x-1\right)\left(x+1\right)}\cdot\dfrac{x+1}{x}\)

\(=\dfrac{x^2+x-2-\left(x^2-x-2\right)}{x-1}\cdot\dfrac{1}{x}=\dfrac{2x}{x\left(x-1\right)}=\dfrac{2}{x-1}\)

c: Để A nguyên thì \(2⋮x-1\)

=>\(x-1\in\left\{1;-1;2;-2\right\}\)

=>\(x\in\left\{2;0;3;-1\right\}\)

Kết hợp ĐKXĐ, ta được: \(x\in\left\{2;3\right\}\)

d: A=2B

=>\(\dfrac{2}{x-1}=2\cdot\dfrac{3}{x^2-1}\)

=>\(\dfrac{1}{x-1}=\dfrac{3}{\left(x-1\right)\left(x+1\right)}\)

=>x+1=3

=>x=2(nhận)

Hoang Anh
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RAVG416
14 tháng 12 lúc 11:30

Nguyên vật liệu kim loại là các chất từ loại khoáng sản được sử dụng trong công nghiệp hoặc chế biến đồ trang sức. Có nhiều loại nguyên vật liệu kim loại như đất sét, cát, đá cẩm thạch, quặng sắt, xăng, khí đốt tự nhiên, than đá, kim loại quý. Các loại kim loại này thường được sử dụng để sản xuất các sản phẩm kim loại hoặc trong các môi trường công nghiệp. Đặc điểm chung của nguyên vật liệu kim loại là chúng có khả năng dẫn điện và dẫn nhiệt tốt, có độ bền cao và có khả năng chịu nhiệt tốt.

P/S: có j sai xin thông cảm nhé=))

Hùng
14 tháng 12 lúc 16:46

Vật liệu kim loại là các chất có tính chất dẫn điện, dẫn nhiệt tốt và dễ dàng gia công. Kim loại được chia thành hai loại chính: kim loại màu (như đồng, nhôm, kẽm) và kim loại quý (như vàng, bạc, platin). Đặc điểm chung của vật liệu kim loại là: cứng, bền, có khả năng chịu lực tốt, dễ uốn và có tính dẻo, dễ tái chế.

Hoang Anh
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