K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

III.Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions1.Mr Buong was born _______June,26th  1983 in a big city.A. in                              B. on                              C. at                               D. for2.She is working hard,so she ________the exam easily.A. will...
Đọc tiếp

III.Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions

1.Mr Buong was born _______June,26th  1983 in a big city.

A. in                              

B. on                              

C. at                               

D. for

2.She is working hard,so she ________the exam easily.

A. will pass                             

B. passed                   

C. passing                              

D. passes

3.Mr Buong is tired, so he _______up late tomorrow.

A. will gets

B. will get

C. gets

D. A,B are correct

4.I think our house _____have some smart T.V and 8 robots.

A might

B. can

C.must

D. will

5. Many doctors_______to Ho Chi Minh to control Covid 19 next week.

A. will come

B. comes

C. came

D.coming

IV.Mark the letter A B, C, or D on your answer that needs correction the following questions.

1.You will to read more books  if  you want to improve your English vocabulary

A. if

B. to read

C. to improve

D. vocabulary

2. In the future, all the children in the world don’t have to live in poverty any more.

A. the

B. don’t have to

C. all the children

D. in

3.His family  was very poor, because he had to work for a company.

A.very                     

B.because                        

C.had to work                  

D.in

V. Mark A, B, C, or D to indicate the word or phrase that is CLOSEST in meaning

1. I’ll take care of the baby while you go shopping.

A. go out

B. be careful        

C. build

D. look after

2. He is smart, he got an A on his test.

A. hard

B. clever

C. ugly

D. beautiful

VI. Mark A, B, C, or D to indicate the word or phrase that is OPPOSITE in meaning

1. My mouth is dry, do you have any water?

A. wet

B. comfortable

C. hot

D. warm

2. Your house is more expensive than mine.

A. cheap

B. modern

C. hard

D. big



























2
8 tháng 4 2025

hộ tui với


8 tháng 4 2025

III. Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions:

  1. Mr. Buong was born _______ June 26th, 1983, in a big city.
    B. on
  2. She is working hard, so she ________ the exam easily.
    A. will pass
  3. Mr. Buong is tired, so he _______ up late tomorrow.
    B. will get
  4. I think our house _____ have some smart T.Vs and 8 robots.
    D. will
  5. Many doctors_______ to Ho Chi Minh to control Covid-19 next week.
    A. will come

IV. Mark the letter A, B, C, or D on your answer sheet that needs correction in the following questions:

  1. You will to read more books if you want to improve your English vocabulary.
    B. to read (Correct form: "You will read more books...")
  2. In the future, all the children in the world don’t have to live in poverty anymore.
    B. don’t have to (Correct form: "won’t have to")
  3. His family was very poor, because he had to work for a company.
    D. in (Correct: "work at a company" or "work for a company")

V. Mark A, B, C, or D to indicate the word or phrase that is CLOSEST in meaning:

  1. I’ll take care of the baby while you go shopping.
    D. look after
  2. He is smart, he got an A on his test.
    B. clever

VI. Mark A, B, C, or D to indicate the word or phrase that is OPPOSITE in meaning:

  1. My mouth is dry, do you have any water?
    A. wet
  2. Your house is more expensive than mine.
    A. cheap
8 tháng 4 2025

trả lời hộ tui với

8 tháng 4 2025

CÂU II À


8 tháng 4 2025

Traffic congestion in Hanoi is a significant issue that affects daily life and urban development. With its rapidly growing population and increasing number of vehicles, the city's infrastructure struggles to keep pace. Narrow streets and inadequate public transportation options further exacerbate the problem, causing bottlenecks during peak hours. Motorbikes, cars, buses, and pedestrians often compete for limited space, leading to chaotic scenes. Air pollution is another consequence of this gridlock, impacting the environment and public health. To address these challenges, Hanoi has introduced solutions such as expanding road networks, promoting the use of eco-friendly vehicles, and improving public transportation systems like buses and metro lines. However, long-term planning and community engagement are essential to reduce congestion effectively.

8 tháng 4 2025

Musicians

8 tháng 4 2025

Là sao

8 tháng 4 2025

kết bạn mai em gửi


8 tháng 4 2025

em gửi lời mời rồi nên cứ nhận lời mời thôi


8 tháng 4 2025

next vì mấy từ kia là vật còn next là cạnh

8 tháng 4 2025

R6UYRFR

8 tháng 4 2025

Here are the sentences rewritten using reported speech:

  1. Sarah asked Tom if he worked out every day.
  2. The doctor asked the patient what time he/she usually went to bed.
  3. Mark asked his friend if he/she was following a new diet.
  4. The manager asked the employee how often he/she took breaks at work.
  5. The teacher asked the class if they thought exercise helped reduce stress.

A, C3H7COOH + C2H5OH → C3H2CÔC2H5 + H2O

B, 1,88

27 tháng 4
a. Viết phương trình phản ứng Phản ứng giữa butyric acid ( 𝐶𝐻3 [ 𝐶𝐻2 ]2𝐶𝑂𝑂𝐻) và ethanol ( C2H5OH𝐶2𝐻5𝑂𝐻) có sự xúc tác của  H2SO4𝐻2𝑆𝑂4 đặc và đun nóng:
CH3[CH2]2COOH+C2H5OHCH3[CH2]2COOC2H5+H2O𝐶𝐻3[𝐶𝐻2]2𝐶𝑂𝑂𝐻+𝐶2𝐻5𝑂𝐻𝐻2𝑆𝑂4đc,𝑡∘𝐶𝐻3[𝐶𝐻2]2𝐶𝑂𝑂𝐶2𝐻5+𝐻2𝑂(Sản phẩm thu được là ethyl butyrate)
b. Tính giá trị của  m𝑚 Để tính khối lượng ester, chúng ta thực hiện các bước sau: 1. Tính số mol các chất tham gia:
  • Phân tử khối butyric acid ( C4H8O2𝐶4𝐻8𝑂2):  𝑀 =88 g/mol
    ⇒𝑛butyricacid =1,7688 =0 , 02 mol
  • Phân tử khối ethanol ( C2H6O𝐶2𝐻6𝑂):  𝑀 =46 g/mol
    ⇒𝑛ethanol =1,2846 ≈0 , 0278 mol
2. Xác định chất hết - chất dư:
Theo phương trình, tỉ lệ mol là 1:1. Ta thấy  0 , 02 <0 , 0278, do đó butyric acid hết, ethanol dư. Tính toán lượng ester theo butyric acid.
⇒𝑛ester(lýthuyt) =𝑛butyricacid =0 , 02 mol
3. Tính khối lượng ester thực tế ( m𝑚):
  • Phân tử khối ethyl butyrate ( 𝐶6𝐻12 𝑂2):  𝑀 =116 g/mol
  • Hiệu suất phản ứng ( H𝐻) = 81%
    m=nester (lý thuyt)×Mester×H100𝑚=𝑛ester(lýthuyt)×𝑀ester×𝐻100
7 tháng 4 2025

2.lemonade

1.?


8 tháng 4 2025

1.Chắc bạn đánh nhầm r

2.Lemonade

TICK MÌNH

My name is Jinlyna. I'm 11 years old.

☆Đấy là tên Tiếng anh của mình, chứ mình tên Ý đấy☆

7 tháng 4 2025

my name is thao .my english name at my english class is lily. I'm eleven years old.my birthday is 10th april.