If energy _______ inexpensive and unlimited, many things in the world would be different.

Thiết bị điều khiển từ xa được chế tạo dựa trên tính chất và công dụng của tia nào dưới đây ?

Theo em, giá trị của hàng hóa được đo bằng gì?

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.

What is the word “potentially” in paragraph 4 closest in meaning to?

Công nghệ cảm biến trong việc kiểm soát chất lượng nông sản là ứng dụng của vật lí vào ngành nào?

Read the following passage about The Key to a Fulfilling Life 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 18 to 22.

In today's fast-paced world, the importance of maintaining a healthy lifestyle cannot be overstated. (18)_________. For instance, those who engage in physical activities regularly often experience increased energy levels and improved mental well-being. 

Moreover, research shows that (19)_________. Healthy habits, such as drinking plenty of water and getting enough sleep, contribute significantly to overall wellness. 

(20)_________. It is essential to find activities that you genuinely enjoy, as this will make it easier to stay committed.

For example, many people find that yoga helps them manage stress while improving their flexibility. (21)_________. (22)_________.

In conclusion, making small changes to your daily routine can lead to significant improvements in your health and happiness. Embracing a healthy lifestyle is not just a trend; it’s a lifelong commitment to yourself.

Bác sĩ thú y nằm trong nhóm ngành nào?

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. Nam: Yes, we should all have these basic life skills to be adults.

b. Nam: Because doing housework helps them develop life skills.

c. Anna: It's true. Life skills such as cooking, cleaning, or taking care of others are really necessary for kids when they grow up.

d. Anna: Thank you for sharing your idea. It's very useful for my project.

e. Anna: Why do you think children should do housework?

Có 6 người sống ở các tầng khác nhau của một tòa nhà 6 tầng: A và B ở căn hộ có 1 phòng ngủ; C, D và E sống ở căn hộ có 2 phòng ngủ; F ở căn hộ có 3 phòng ngủ; căn hộ ở tầng 2 có 2 phòng ngủ; F sống ở tầng thấp hơn D; C sống ở tầng thấp hơn B; căn hộ ở tầng 5 hơn căn hộ ở tầng 3 một phòng ngủ.

Nếu E sống ở tầng 1 thì hai người nào dưới đây không thể sống ở 2 tầng kề nhau?

Đâu là động cơ nhiệt?

Ở một loài thực vật, alen A quy định hoa đỏ trội hoàn toàn so với alen a quy định hoa vàng. Cho cây (P) có kiểu gen Aa tự thụ phấn thu được F₁ tiếp tục cho các cây F₁ tự thụ phấn thu được F₂. Biết rằng không có đột biến xảy rA. Tính theo lý thuyết, cây có kiểu hình hoa đỏ ở F₂ chiếm tỉ lệ:

Các Uỷ ban của Quốc hội gồm tất cả mấy loại chính?

Cho vay thế chấp là hình thức cho vay đòi hỏi người vay phải có tài sản thế chấp có giá trị như thế nào?

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 28 to 34. Foot-racing is a popular activity in the United States. It is seen not only as a competitive sport but also as a way to exercise, to enjoy the camaraderie of like-minded people, and to donate money to a good cause. Though serious runners may spend months training to compete, other runners and walkers might not train at all. Those not competing to win might run in an effort to beat their own time or simply to enjoy the fun and exercise. People of all ages, from those of less than one year (who may be pushed in strollers) to those in their eighties, enter into this sport. The races are held on city streets, on college campuses, through parks, and in suburban areas, and they are commonly 5 to 10 kilometers in length. The largest footrace in the world is the 12-kilometer Bay to Breakers race that is held in San Francisco every spring. This race begins on the east side of the city near San Francisco Bay and ends on the west side at the Pacific Ocean. There may be 80,000 or more people running in this race through the streets and hills of San Francisco. In the front are the serious runners who compete to win and who might finish in as little as 34 minutes. Behind them are the thousands who take several hours to finish. In the back of the race are those who dress in costumes and come just for fun. One year there was a group of men who dressed like Elvis Presley, and another group consisted of firefighters who were tied together in a long line and who were carrying a fire-hose. There was even a bridal party, in which the bride was dressed in a long white gown and the groom wore a tuxedo. The bride and groom threw flowers to bystanders, and they were actually married at some point along the route.

A “bystander” as used in the last paragraph refers to which of the following?

Chức năng nào sau đây không phải là chức của amilozơ?

Nguyên tử nguyên tố X có tổng số hạt bằng 82, hạt mang điện nhiều hơn hạt không mang điện là 22 hạt. Số khối A của nguyên tử X là

Sâu hại biến thái hoàn toàn phát triển qua mấy giai đoạn?

Cho phương trình \({{4}^{x}}-2m\cdot {{2}^{x}}+2m+2=0\). Với \(m\) là tham số thực.

Phương trình có hai nghiệm phân biệt khi và chỉ khi:

Tài nguyên khoáng sản đa dạng ở khu vực Mỹ Latinh là cơ sở để phát triển ngành nào sau đây?