Trong các sinh vật sau, nhóm sinh vật nào có khả năng tự dưỡng?

Trong mặt phẳng \(O x y\), cho đường tròn \((C)\) có phương trình \(x^{2}+y^{2}-6 x+2 y+6=0\) và hai điểm \(A(1;-1), B(1; 3)\).

Qua B kẻ được hai tiếp tuyến với \((C)\) có phương trình là:

Hoạt động nào sau đây KHÔNG là biểu hiện của hệ thống IoT?

Rewrite the sentences without changing their meanings. Write no more than FOUR words in each blank.

She isn't qualified for this job because she doesn't speak English fluently.

If __________ , she would be qualified for this job.

Read the passage carefully.

1. It is estimated that about 40 per cent of the world's population use social media, and many of these billions of social media users look up to influencers to help them decide what to buy and what trends to follow. An influencer is a person who can influence the decisions of his or her followers because of his or her knowledge or special knowledge in a particular area, e.g. fashion, travel, or technology. Influencers are now seen by many companies as a direct way to customers' hearts. Brands are now asking powerful influencers to market their products. With some influencers charging up to $25,000 for one social media post, it is no surprise that more and more people are keen to become influencers, too. If you are one of them, then here are five tips on how to do it.

2. Choose your niche: What is the area that you know most about? What do you feel most excited talking about? Find the specific area that you are most interested in and develop it.

3. Choose your medium and write an interesting bio: Most influencers these days are bloggers and micro-bloggers. Decide which medium – such as your own online blog, Instagram or Snapchat – is the best way to connect with your followers and chat about your niche area. When you have done that, write an attention-grabbing bio that describes you and your speciality area in an interesting and unique way. Make sure that people who read your bio will want to follow you.

4. Post regularly and consistently: Many influencers post daily on their social media accounts. The more you post, the more likely people will follow you. Also, make sure that your posts are consistent and possibly follow a theme.

5. Tell an interesting story: Whether it is a photo or a comment that you are posting, use it to tell a story that will catch the attention of your followers and help them connectwith you.

6. Make sure people can easily find your content: Publicize your posts on a variety of social media by hashtags and catchy titles to make sure that they can be easily found. There is no point writing the most exciting blogposts or posting the most attractive photographs if no one is going to see them.

7. Most importantly, if you want to become a social media influencer, you need to have patience. Keep posting and your following will gradually increase. Good luck!

Choose an option (A, B, C, or D) that best answers each question.

In paragraph 2, what is the word niche closest in meaning to?

Tổ chức liên kết khu vực nào sau đây có sự tham gia của các nước ở nhiều châu lục khác nhau nhất?

Read the passage below and choose A, B, C or D.

Although noise, commonly defined as unwanted sound, is a widely recognized form of pollution, it is very difficult to measure because the discomfort experienced by different individuals is highly subjective and, therefore, variable. Exposure to lower levels of noise may be slightly irritating, whereas exposure to higher levels may actually cause hearing loss. Particularly in congested urban areas, the noise produced as a by-product of our advancing technology causes physical and psychological harm, and detracts from the quality of life for those who are exposed to it.

Unlike the eyes, which can be covered by the eyelids against strong light, the ear has no lid, and is, therefore, always open and vulnerable; noise penetrates without protection. Noise causes effects that the hearer cannot control and to which the body never becomes  accustomed. Loud noises instinctively signal danger to any organism with a hearing mechanism, including human beings. In response, heartbeat and respiration accelerate, blood vessels constrict, the skin pales, and muscles tense. In fact, there is a general increase in functioning brought about by the flow of adrenaline released in response to fear, and some of these responses persist even longer than the noise, occasionally as long as thirty minutes after the sound has ceased.

Because noise is unavoidable in a complex, industrial society, we are constantly responding in the same way that we would respond to danger. Recently, researchers have concluded that noise and our response may be much more than an annoyance. It may be a serious threat to physical and psychological health and well-being, causing damage not only to the ear and brain but also to the heart and stomach. We have long known that hearing loss is America's number one nonfatal health problem, but now we are learning that some of us with heart disease and ulcers may be victims of noise as well. Fetuses exposed to noise tend to be overactive, they cry easily, and they are more sensitive to gastrointestinal problems after birth. In addition, the psychic effect of noise is very important. Nervousness, irritability, tension, and anxiety increase affecting the quality of rest during sleep, and the efficiency of activities during waking hours, as well as the way that we interact with each other.

Based on the passage, how does noise affect psychological and physical health in industrial societies?

Cơ sở để quy định tên gọi, và là trình tự ban hành của văn bản pháp luật được gọi là gì?

Nguyên tử Helium (He) có 2 proton và 2 neutron. Số khối của He là

Đâu không phải là kiểu dữ liệu cơ bản trong python?

Một vật được thả rơi tự do từ độ cao 19,6 m xuống đất. Bỏ qua lực cản của không khí. Lấy gia tốc rơi tự do g = 9,8 m/s². Vận tốc của vật trước khi chạm đất bằng

Thao tác nào sau đây được sử dụng để thêm ảnh trong chỉnh sửa hình ảnh?

Trong các thiết bị sau, thiết bị nào không sử dụng tụ điện?

Có thể sắp xếp trình tự lí lẽ, bằng chứng như thế nào? (Chọn hai đáp án)

Bất kì có hành vi bịa đặt để hạ uy tín của người khác là xâm phạm quyền được pháp luật bảo hộ về điều gì?

Cho tập hợp $A=\left(-\infty ;-1 \right]$ và tập $B=\left(-2;+\infty \right)$. Khi đó $A\cup B$ là

Hoạt động tiêu dùng bao gồm bao nhiêu hình thức chính?

Vì sao được gọi là cách mạng tư sản?

Mark the letter A, B, C, or D on your answer sheet to indicate the correct arrangement of the sentences to make a meaningful paragraph/letter in each of the following questions.

a. Also, volunteering helps students connect with the community, making them aware of the needs around them.

b. Additionally, students develop such important skills as teamwork and communication ones while they volunteer.

c. Firstly, students who do voluntary work gain valuable real-world experience which can help in their future careers.

d. Finally, doing volunteer work can be a rewarding experience, as students feel good about helping others.

e. High school students benefit from doing voluntary work in many ways.