Hỗn hợp X gồm axit HCOOH và axit CH₃COOH (tỉ lệ mol 1:1). Lấy 5,3 gam hỗn hợp X tác dụng với 5,75 gam C₂H₅OH (có xúc tác H₂SO₄ đặc) thu được m gam hỗn hợp este (hiệu suất của các phản ứng este hoá đều bằng 80%). Giá trị của m là

A. 10,12 g                   

B. 6,48 g                       

C. 8,10 g                           

D. 16,20 g

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closet in meaning to each of the following question.

The music was so loud that we had to shout to each other.

A. We didn’t say loud enough for us to hear each other

B. The music was too  loud that we had to shout to each other.

C. We didn’t say loud enough to hear each other

D. Because of  loud music,we had to shout to each other.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closet in meaning to each of the following question.

It is a pity that I can’t speak English as native speaker.

A. I wish I could speak English as a native speaker

B. I wish I couldn’t  speak English as a native speaker

C. I wish I can speak English as a native speaker

D. I wish I have spoken  English as a native speaker