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 bestfits each of the numbered blanks from 31 to 35.

   How men first learnt to (31) .................. words is unknown; in other words, the origin of language is a mystery. All we really know is that men, unlike animals, (32) .................. invented certain sounds to express thoughts and feelings, actions and things so that they could communicate with each other; and that later they agreed (33) .................. certain signs, called letters, which could be combined to represent those sounds, and which could be written down. These sounds, whetherspoken or written in letters, are called words.

   Great writers are those who not only have great thoughts but also express these thoughts in words that (34) .................. powerfully to our minds and emotions. This charming and telling use of words is what we call literary style. Above all, the real poet is a master of words. He can convey his meaning in words which sing like music, and which by their position and association can (35) .................. men to tears. We should, therefore, learn to choose our words carefully, or they will make our speech silly and vulgar.

Điền vào ô 34

A. interest 

B. appeal 

C. attract 

D. lure

Đun este E (C₆H₁₂O₂) với dung dịch NaOH ta được một ancol A không bị oxi hóa bởi CuO. Este E có tên là

A. isopropyl propionat

B. isopropyl axetat

C. tert–butyl axetat

D. n–butyl axetat

Phát biểu nào sau đây là đúng ?

A. Ở nhiệt độ thường, các amino axit đều là những chất lỏng.

B. Các amino axit thiên nhiên hầu hết là các β – amino axit.

C. Axit glutamic là thành phần chính của bột ngọt.

D. Amino axit thuộc loại hợp chất hữu cơ tạp chức.

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

Vietnam’s rice export this year will decrease_________about 10%, compared with that of last year.

A. with 

B. at 

C. by 

D. on

Thực vật thủy sinh KHÔNG chứa đặc điểm nào dưới đây:

A. Thân có nhiều khoang rỗng chứa khí

B. Có thể hấp thu nước trên toàn bộ bề mặt cơ thể.

C. Có diệp lục thực hiện quang hợp tổng hợp chất hữu cơ cho riêng mình.

D. Không xảy ra quá trình hô hấp tế bào

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the

correct answer to each of the questions from 40 to 47.

Hobbit-like Species of Humans

On the tiny island of Flores, east of Bali and midway between Asia and Australia, the scientists have discovered the remains of a small, hobbit-like species of humans. These people grew no larger than the modern three-year-old child. They lived about 18,000 years ago and are completely different species of human.

This discovery has taught scientists a lot about the human species. This remarkable discovery shows that the human species is more varied and flexible in its ability to adapt than previously thought. These hobbit-like people join a short list of other type of humans that lived with modern humans.

The researchers believe that these hobbits evolved from a normal size, human population that reached Flores around 840,000 years ago. One likely explanation is that, over thousands of years, the species became smaller because the environmental conditions favored a smaller body size. The dwarfing of mammals on islands occurs frequently. Islands limit food supply and predators and species compete for the same environmental space. Survival would depend on minimizing energy requirements.

What makes this discovery so significant?

A. It shows that hobbits may have existed. 

B. This shows that small islands are good place for smaller species. 

C. It shows that humans do not need a lot of different foods. 

D. It shows that human can change a great deal according to the demands of the environment.

Hai nguyên tố X, Y ở hai chu kì liên tiếp và ở hai phân nhóm liên tiếp, tổng điện tích hạt nhân là 23. Mệnh đề nào sau đây không đúng