Mục đích ban đầu ra đời của GPS phục vụ lĩnh vực nào?

Read the following passage about Asia’s culture and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions

[I] Chemicals are present everywhere in our environment, some of which occur naturally, while others are the result of human activities. [II]. They are found in the air, water, and soil, and can have both positive and negative impacts on the ecosystem. Some chemicals, like nutrients, help support life by promoting plant growth [III]. However, others, especially synthetic chemicals such as pesticides, fertilizers, and industrial waste, can be harmful to both the environment and human health. [IV]

The widespread use of pesticides and fertilizers in agriculture has been a major cause of chemical pollution. When these chemicals are used improperly or excessively, they can wash into rivers, lakes, and oceans, leading to water pollution. This runoff can also contribute to the depletion of oxygen in water bodies, a process known as eutrophication. Eutrophication harms aquatic life, disrupting ecosystems and causing the death of fish and other organisms that rely on oxygen.

Toxic chemicals such as heavy metals (e.g., mercury and lead) pose additional threats to the environment and human health. These substances can accumulate in the food chain, starting from plants and animals in contaminated areas and eventually reaching humans. Long-term exposure to these chemicals can lead to serious health issues, including neurological disorders, cancer, and other chronic conditions. Many countries have established regulations to limit the use of harmful chemicals, but enforcement remains a challenge.

Efforts to reduce chemical pollution involve a combination of government regulations, technological innovations, and public awareness. Governments worldwide have introduced stricter rules on the use of hazardous chemicals and encouraged the development of eco-friendly alternatives. These regulations aim to limit the harmful impact of chemicals on the environment, encouraging industries to adopt safer practices. Environmental organizations play a vital role in monitoring chemical pollution, raising awareness, and advocating for cleaner technologies. They work closely with policymakers to ensure effective enforcement of environmental laws. While progress has been made, ongoing efforts are needed to address emerging challenges and ensure a safer and healthier environment for future generations.

Which of the following is TRUE according to the passage?

Hệ nhị phân là nền tảng của tất cả các công nghệ số, bao gồm máy tính và các thiết bị điện tử. Hệ nhị phân cho phép biểu diễn các số và dữ liệu dưới dạng nhị phân. Nó đóng vai trò quan trọng trong việc lưu trữ, xử lý và truyền tải thông tin trong các hệ thống điện tử hiện đại.

Dưới đây là một số nhận xét về thông tin trên:

Choose the word whose underlined part differs from the other three in pronunciation: cheap, child, chemist, chair

Có nhiều nhân tố ảnh hưởng đến lượng cung hàng hóa, dịch vụ trên thị trường, ngoại trừ yếu tố nào sau đây?

Gen I và II lần lượt có 2, 3 alen. Các gen phân li độc lập. Biết gen I ở trên nhiễm sắc thể thường và gen II trên nhiễm sắc thể X ở đoạn không tương đồng với Y. Số kiểu gen tối đa có thể trong quần thể là?

Sản phẩm chăn nuôi nào dưới đây không được dùng làm thực phẩm?

Một vật chuyển động theo quy luật \(s=-\frac{1}{2} t^{3}+9 t^{2}\) với \(t\) (giây) là khoảng thời gian tính từ lúc bắt đầu chuyển động và \(s\) (mét) là quãng đường vật đi được trong khoảng thời gian đó. Hỏi trong khoảng thời gian 10 giây, kể từ lúc bắt đầu chuyển động, vận tốc lớn nhất của vật đạt được bằng bao nhiêu?

Parabol \((P):y = {x^2} - 6x + 5\) có bao nhiêu điểm chung với trục hoành?

Thả một quả cầu nhôm khối lượng 0,15 kg đã được đun nóng tới 100^∘C vào một lượng nước đựng trong nhiệt lượng kế ở 20^∘C . Sau một thời gian, nhiệt độ của quả cầu và của nước đều bằng 25°C. Coi quả cầu và nước chỉ truyền nhiệt cho nhau. Biết nhiệt dung riêng của nhôm và nước lần lượt là 880 J/kg. K, 4200 J/kg. K. Khối lượng của nước xấp xỉ là

Mỗi luận điểm nên được trình bày như thế nào trong một bài văn?

Tích tất cả giá trị của \(a\) để góc tạo bởi đường thẳng \(\left\{\begin{array}{l}x=4+a t \\ y=7-2 t\end{array}\right.\) (\(t \in \mathbb{R}\)) và đường thẳng \(3 x+4 y-2=0\) bằng \(45^{\circ}\) là

Read the following leaflet and mark the letter A, B, C, or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 7 to 12.

ANNOUNCEMENT OF CARDIFF BIKE RACE

We are going to take part in the Cardiff Bike Race. Please notice some important details:

• Time: 8 AM ___(7)___ the 22nd of September.

• Team’s Dress Code: You ___(8)___ your normal black T-shirts and shorts because another club uses those colors. Instead, we will wear blue.

• Snack Break: After twenty kilometres, there will be a ___(9)___ spot for snacks with some cake and orange juice.

• Prizes: ___(10)___ latest sport watches.

Let's pedal our way to victory!

While our main aim ___(11)___ people on their bikes, a benefit of the day is the fundraising ___(12)___. This is either direct sponsorship from company logos on the cycling shirts or our cyclists getting sponsored individually per mile.

Read the following advertisement and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 1 to 6.

Vertical Gardens & Virtual Communities: Your 2025 Urban Experience

Transform your daily life with our (1)_________ vertical gardens! Our (2)_________ creates beautiful urban spaces.

People (3)_________ in apartments love our space-saving solutions. We offer customers access (4)_________ virtual gardening classes.

Don't (5)_________ around the bush - start your garden today! c

Join thousands of happy urban gardeners today!

Easy setup in 30 minutes

Water-saving system

Connect with neighbors online

Weekly gardening tips

Call us: 0800-GREEN-CITY or visit www.verticalcity2025.com

I’m disappointed _________ people have spoiled this area.

Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

The explosion in mobile phone use around the world has made some health professionals worrieSome doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

Which of the following best paraphrases this sentence: “Phones are more than a means of communication - having a mobile phone shows that they are cool and connected.”?

Cho các chất: nước Br₂, acid HNO₃ (có mặt H₂SO₄ đặc, t^o), dung dịch NaOH, Br₂ (Fe,t^o), dung dịch AgNO₃/NH₃, H₂O/xúc tác acid. Số chất tác dụng với styrene là

Mark the letter A, B, C, or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17

a. You: Sure! Go straight for two blocks, then turn left. You'll see the station on your right.

b. Stranger: Excuse me, can you tell me how to get to the train station?

c. Stranger: Thank you so much!

Cho bảng số liệu:

CƠ CẤU DÂN SỐ THEO NHÓM TUỔI CỦA VIỆT NAM GIAI ĐOẠN 1999 – 2014 (%)

Dựa vào bảng số liệu trên, cho biết kết cấu dân số nước ta là gì?