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 43 to 50

Pollution emitted in industrial areas represents a threat to human health and the surrounding natural resources. We have a tendency to believe that the production processes are the only source of environmental damage, and often forget about the possible long-term effects of harmful production practices. We may think that the closure of these huge industrial areas would improve the quality of the environment. Unfortunately, this ignores the threat of the remaining waste, which is abandoned and poorly stored. It represents an even bigger danger because it stands neglected as it degrades and leaks into the earth without any control at all. 

Changes in the water chemistry due to surface water contamination can affect all levels of an ecosystem. It can affect the health of lower food chain organisms and, consequently, the availability of food up through the food chain. It can damage the health of wetlands and damage their ability to support healthy ecosystems, control flooding, and filter pollutants from storm water runoff. The health of animals and humans are affected when they drink or bathe in contaminated water. In addition water-based organisms, like fish and shellfish, can pile up and concentrate contaminants in their bodies. When other animals or humans eat these organisms, they receive a much higher dose of contaminant than they would have if they had been directly exposed to the original contamination. 

Contaminated groundwater can badly affect animals, plants and humans if it is removed from the ground by manmade or natural processes. Depending on the study of rocks of the area, groundwater may rise to the surface through springs or seeps, flow sideways into nearby rivers, streams, or ponds, or sink deeper into the earth. In many parts of fhe world, groundwater is pumped out of the ground to be used for drinking, bathing, other household uses, agriculture, and industry. 

Contaminants in the soil can harm plants when they take up the contamination through their roots. Eating, breathing in, or touching contaminated soil, as well as eating plants or animals that have piled up soil contaminants can badly affect the health of humans and animals. 

Air pollution can cause breathing-related problems and other bad health effects as contaminants are absorbed from the lungs into other parts of the body. Certain air contaminants can also harm animals and humans when they contact the skin. Plants rely on breathing for their growth and can also be affected by exposure to contaminants moved in the air. 

What is the topic of the passage?

A. Sources of environmental damage   

B. The pollution from the city  

C. Bad effects of industrial waste    

D. The quality of the environment

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 36 to 42.

Successful students often do the followings while studying. First, they have an overview before reading. Next, they look for important information and pay greater attention to it (which often needs jumping forward or backward to process information). They also relate important points to one another. Also, they activate and use their prior knowledge. When they realize that their understanding is not good, they do not wait to change strategies. Last, they can monitor understanding and take action to correct or “fix up” mistakes in comprehension. 

Conversely, students with low academic achievement often demonstrate ineffective study skills. They tend to assume a passive role, in learning and rely on others (e.g., teachers, parents) to monitor their studying, for example, low-achieving students often do not monitor their understanding of content; they may not be aware of the purpose of studying; and they show little evidence of looking back, or employing “fix-up” strategies to fix understanding problems. Students who struggle with learning new information seem to be unaware that they must extent effort beyond simply reading the content to understand and remember it. Children with learning disabilities do not plan and judge the quality of their studying. Their studying may be disorganized. Students with learning problems face challenges with personal organization as well. They often have difficulty keeping track of materials and assignments, following directions, and completing work on time. Unlike good studiers who employ a variety of study skills in a flexible yet purposeful manner, low-achieving students use a restricted range of study skills. They cannot explain why good study strategies are important for learning; and they tend to use the same, often ineffective study approach for all learning tasks, ignoring task content, structure or difficulty.

The underlined pronoun “They” in the last sentence refers to______.

A. study strategies    

B. study skills  

C. low-achieving students    

D. good studiers

Read  the following  passage and mark the letter A, B, C on your answer sheet to indicate the correct answer to each of the questions.

The art world

One of the major problems in the art world is how to distinguish and promote an artist. In effect, a market must be created for an artist to be successful. The practice of signing and    numbering individual prints was introduced by James Abbott McNeill Whistler, the nineteenth - century artist best known for the painting of his mother, called “Arrangement in Grey and Black”, but known to most of us as “ Whistler’s Mother”. Whistler’s brother - in - law, Sir Francis Seymour Haden, a less well - known artist, had speculated that collectors might find prints more attractive if they knew  that they were only a limited number of copies produced. By signing the work in pencil, an artist could guarantee and personalize each print.

As soon as Whistler and Haden began the practice of signing and numbering  their prints, their work began to increase in value. When other artists noticed that the signed prints commanded higher prices, they began copying the procedure.

Although most prints are signed on the right - hand side in the margin below the image, the placement of the signature is a matter of personal choice. Indeed, prints have been signed within the image, in any of the margins, or even on the reverse side of the print. Wherever the artist elects to sign it, a signed print is still valued above an unsigned one, even in the same edition.

Which of the following would be a better title for the passage?

A. Whistler’s Mother

B. The Practice of Signing Prints

C. Copying Limited Edition Prints

D. Whistler’s Greatest Works

I/ Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions.

A. development

B.misbehavior

C. certificate

D. originate

Are you thinking of flying business class?" "________"

A. I'm flying there to attend a party.

B. No, I'm just on business. 

C. No, I'd like an aisle seat.

D. No, economy.

Mark the letter A, B, C or D on your answer sheet to indicate the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following questions

No one knew exactly what would happen to a human being in space. 

A. casually 

B. flexibly 

C. wrongly 

D. informally 

Khi nói về tiến hoá nhỏ, phát biểu nào sau đây đúng?

A. Tiến hóa nhỏ diễn ra trong phạm vi tương đối rộng, thời gian tương đối dài

B. Tiến hóa nhỏ diễn ra ở cấp độ cá thể, kết quả dẫn tới hình thành loài mới.

C. Có thể nghiên cứu tiến hóa nhỏ bằng các thực nghiệm khoa học.

D. Tiến hóa nhỏ là quá trình tiến hóa của các loài vi sinh vật.

Đốt cháy hoàn toàn một amin X bằng lượng không khí vừa đủ, thu được 17,6 gam CO₂, 12,6 gam H₂O và 69,44 lít khí N₂ (đktc). Giả thiết không khí chỉ gồm N₂ và O₂, trong đó oxi chiếm 20% thể tích không khí. Số đồng phân cấu tạo của X là

A. 3

B. 2

C. 5

D. 4.

Điện phân 1 lít dung dịch X gồm Cu(NO₃)₂ 0,6M và FeCl₃ 0,4M đến khi anot thoát ra 17,92 lít khí (đktc) thì dừng lại. Lấy catot ra khỏi bình điện phân, khuấy đều dung dịch để phản ứng xẩy ra hoàn toàn thì thu được dung dịch Y. Giả thiết kim loại sinh ra đều bám lên catot, sản phẩm khử của N⁺⁵ (nếu có) là NO duy nhất. Giá trị (m_X - m_Y) gần nhất là

A. 92 gam

B. 102 gam

C. 101 gam

D. 91 gam