Thủy phân este có dạng RCOO – R’COO – R’’ trong môi trường kiềm thu được

A.  2 muối và 1 ancol

B. 2 ancol và 1 muối

C. 1 muối và 1 ancol

D. 1 muối và 2 ancol

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

Education is also important (1)_____ it helps people get more out of life. It increases their knowledge and understanding of the world. It helps them acquire the skills that make life more interesting and enjoyable, (2)_____ the skills needed to participate in a sport, paint a picture, or play a musical (3)_____. Such education becomes (4)___ important as people gain more and more leisure time. Education also helps people adjust to change. This habit has become necessary because social changes today take place with increasing speed and (5)______ the lives of more and more people. Education can help a person understand these changes and provide him with the skills for adjusting to them.

Question 5.

A. effect

B. affect

C. affective

D. effective

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

Education is also important (1)_____ it helps people get more out of life. It increases their knowledge and understanding of the world. It helps them acquire the skills that make life more interesting and enjoyable, (2)_____ the skills needed to participate in a sport, paint a picture, or play a musical (3)_____. Such education becomes (4)___ important as people gain more and more leisure time. Education also helps people adjust to change. This habit has become necessary because social changes today take place with increasing speed and (5)______ the lives of more and more people. Education can help a person understand these changes and provide him with the skills for adjusting to them.

Question 4.

A. increased

B. increasing

C. increase

D. increasingly

The demand was so great. They had to reprint the book immediately.

A. So great was the demand that they had to reprint the book immediately.

B. The book would be reprinted immediately since the demand was great.

C. They demanded to reprint the book immediately.

D. They demanded that the book be reprinted immediately.

Cho hình chóp S . A B C D có đáy ABCD là hình bình hành. Gọi M là điểm trên cạnh SC sao cho 5 S M = 2 S C , mặt phẳng α qua A, M và song song với đường thẳng BD cắt hai cạnh SB, SD lần lượt tại H, K. Tính tỉ số thể tích  V S . A H M K V S . A B C D

A.  1 5

B.  8 35

C.  1 7

D.  6 35

Một phiếu điều tra về vấn đề tự học của học sinh gồm 10 câu hỏi trắc nghiệm, mỗi câu có 4 lựa chọn để trả lời. Khi tiến hành điều tra, phiếu thu lại được coi là hợp lệ nếu người được hỏi trả lời đủ 10 câu hỏi, mỗi câu hỏi chỉ chọn một phương án. Hỏi cần tối thiểu bao nhiêu phiếu hợp lệ để trong số đó luôn có ít nhất hai phiếu trả lời giống hệt nhau cả 10 câu hỏi?

A.  1048577

B.  1048576

C.  10001

D.  2097152

Listen to a nature radio programme and decide if the following sentences are True or False. Your browser does not support the audio element.

Question: No discovered cave in the world is larger than Son Doong.

A. True

B. False