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24 tháng 6 2023

popular; careful; pretty; bad; exciting; high; good; optimistic; famous; cheap

1. Their harmonies in concert are as good as original recordings.

2. We'll make the tickets as cheap as possible so everyone can afford to buy one.

3. I must try to be as careful as possible in my artistic career choices.

4.Choir competitions are as popular as big sporting events.

5. Restricted view tickets are not always as bad as they sound.

6. The album rises as ​high as the top five on some charts.

7. About the chance of success, the new album is as famous as the first record

8. She wouldn't be as optimistic as she is if she couldn't sing.

9. Among the students, the band is as exciting as individual artists

10. The little girl is as pretty as a picture and dances artistically.

giúp mình với ạ mình đang cần gấp THE IMPACT OF TECHNOLOGYThe 21st century will no doubt see a great (1) ………(ADVANCE)in electronics and technology as the (2) ………….(POPULAR) of computers increases all around the world. For some, this technology will mean an (3) ………….(INVADE) of their privacy, but for others it will be welcomed. In business and education as well as the home, the idea of sending your (4) ………….(CORRESPOND) through email is surely an exciting idea. The greatest (5)....
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giúp mình với ạ mình đang cần gấp 
THE IMPACT OF TECHNOLOGY
The 21st century will no doubt see a great (1) ………(ADVANCE)in electronics and technology as the (2) ………….(POPULAR) of computers increases all around the world. For some, this technology will mean an (3) ………….(INVADE) of their privacy, but for others it will be welcomed. In business and education as well as the home, the idea of sending your (4) ………….(CORRESPOND) through email is surely an exciting idea. The greatest (5). ………….(ATTRACT) must be the fact that there is no need to waste time going out to buy stamps and posting the letter off to its destination. Of course, as your (6) ………….(DEPEND) on the computer and technology grows, there is also the problem of (7) ………….(SECURE) Users are afraid that personal (8) ………….(INFORM) such as bank account numbers will become accessible to people who may (9) …………. (USE) it. To combat this problem there must be greater (10) ………….(COOPERATE) between banks and on-line.

B. READING Exercise 1: Read the text below and decide which answer A, B, C or D best fits each space. On the night of 21 October 1931, millions of Americans (1) ………….part in a coast-to-coast ceremony to commemorate the passing of a great man. Lights (2) ………….in homes and offices from New York to California. The ceremony (3) …………. the death of an inventor - indeed, to many people, the most inventor (4) …………. time: Thomas Alva Edison.Few inventors have (5) …………. an impact as great as his on everyday life, and many of his inventions played a crucial (6) …………. in the development of modern technology. One should never (7) …………. how amazing some of Edison's inventions were. In many ways, Edison is the perfect example of an inventor - by which I mean not just someone who dreams up clever gadgets, but someone whose products transform the lives of millions. He possessed the key characteristics that an inventor needs to (8) …………. asuccess of inventions.

1. A. joined B. held C. were D. took

2. A. turned out B. came off C. went out D. put off

3. A. marked B. distinguished C. noted D. indicated

4. A. whole B. full C. entire D. all

5. A. put B. had C.served D. set

6. A. effect B. place C. role D. share

7. A. underestimate B. lower C. decrease D. mislead

8. A. gain B. make C. achieve D. get

2
28 tháng 5 2023

1. advancement
2. popularity
3. invasion
4. correspondence
5. attraction
6. dependence
7. security
8. information
9. misuse
10. cooperation

B.

1. D. took
2. A. turned out
3. A. marked
4. D. all
5. A. had
6. C. role
7. A. underestimate
8. C. achieve

29 tháng 5 2023

A. 

1. advancement (n)
2. popularity (n)
3. invasion (n)
4. correspondence (n)
5. attraction (n)
6. dependence (n)
7. security (n)
8. information (n)
9. misuse (v)
10. cooperation (n)

B. 
1. D. took
2. C. went out
3. A. marked
4. C. entire
5. A. put
6. C. role
7. A. underestimate
8. C. achieve

16 tháng 12 2021

A. MgSO4 

- Liên kết ion được hình thành bởi cation kim loại Mg2+ và anion gốc axit SO42-

- Liên kết cộng hóa trị giữa S và O.

16 tháng 12 2021

A: MgSO4

Liên kết ion giữa Mg2+ và SO42-, liên kết cộng hóa trị giữa S và O

8 tháng 12 2021

Bài 1: 

Ta có số tiền tủ lạnh sau khi giảm lần 1 là: \(15000000-15000000.20\%=12000000đ\)

Số tiền tủ lạnh sau khi giảm lần 2 là: \(12000000-12000000.5\%=11400000đ\)

Số tiền cửa hàng thu được sau khi bán 5 cái tủ lạnh: \(11400000.5=57000000đ\)

 

8 tháng 12 2021

Giúp mình 3 bài còn lại đc không ạ? 

16 tháng 12 2021

ghi cmt đầu để lm j thế

16 tháng 12 2021

khó ghê đợi em xem lại sách 10 cái đã 

7 tháng 1 2022

đâu phải hỏi chỗ này -_-

7 tháng 1 2022

ta có:

\(\dfrac{P_1}{P}=\dfrac{S_1}{S}=\dfrac{\pi R^2}{\dfrac{4}{\pi R^2}}=\dfrac{1}{4}\)

\(\dfrac{P_2}{P}=\dfrac{S-2S_1}{S}=\dfrac{S-\dfrac{S}{2}}{S}=\dfrac{1}{2}\)

<=>\(\dfrac{P_1}{P_2}=\dfrac{1}{\dfrac{4}{\dfrac{1}{2}}}=\dfrac{1}{2}\)

ta tiếp có hệ pt:

\(\left\{{}\begin{matrix}\dfrac{OO_2}{OO_1}=\dfrac{P_1}{P_2}=\dfrac{1}{2}\\OO_2+OO_1=\dfrac{R}{2}\end{matrix}\right.\)

ra được :

\(OO_1=\dfrac{R}{3}\) và \(OO_2=\dfrac{R}{6}\)

13 tháng 11 2021

\(1,=20x^2-15x+10x-20x^2=-5x\\ 2,=4x^2-20x+25-4x^2+18x-18=7-2x\\ 3,=\left(6x^3-4x^2-12x+8x+15x-10\right):\left(3x-2\right)\\ =\left(3x-2\right)\left(2x^2-4x+5\right):\left(3x-2\right)\\ =2x^2-4x+5\\ 4,=\dfrac{5x+25-2x+10+x^2+2x-35}{\left(x+5\right)\left(x-5\right)}=\dfrac{x\left(x+5\right)}{\left(x+5\right)\left(x-5\right)}=\dfrac{x}{x-5}\\ 5,=\dfrac{3x-8-x-6}{x-7}+\dfrac{\left(x-2\right)\left(x+2\right)}{x-2}=\dfrac{2\left(x-7\right)}{x-7}+x+2=2+x+2=x+4\\ 6,=\dfrac{x^2+8x+16+2x-8-6x-8}{\left(x-4\right)\left(x+4\right)}=\dfrac{x\left(x+4\right)}{\left(x-4\right)\left(x+4\right)}=\dfrac{x}{x-4}\\ 7,=\dfrac{x\left(x-7\right)}{2x\left(x+3\right)}\cdot\dfrac{4\left(x-3\right)\left(x+3\right)}{\left(x-7\right)^2}=\dfrac{2\left(x-3\right)}{x-7}\)