Biết nhiệt dung riêng của nước là 4200 J/kg.K, nhiệt nóng chảy riêng của nước đá là 3,3.10⁵ J/kg.K. Nhiệt lượng cần cung cấp để 3 kg nước đá ở nhiệt độ 0 ^oC chuyển lên nhiệt độ 50 ^oC là

Read the passage and choose the correct answer to each of the following questions.

1. Imagine this: Your little brother's favourite toy car has a broken wheel, and he's about to cry. You're not worried, though. You take some pictures of the broken part and use your 3D printer to make a new one.

2. 3D printers are amazing machines that can create objects from digital designs. Surprisingly, people first thought of this idea way back in 1984, and by 1993, they started a company to make it happen! Since 2004, 3D printers have become small and affordable, so almost anyone can have one at home. In 2018, they sold more than half a million of them around the world.

3. How do they work? Well, instead of using ink like regular printers, 3D printers use materials like plastic or metal. They put these materials layer by layer to build a 3D shape.

4. People are using 3D printers to make all sorts of things, like jewelry and decorations. Even sports companies are using them to make shoes that fit perfectly. And doctors use 3D printers to make things like replacement bones. It makes surgeries easier and helps people get better faster.

5. 3D printers are developing all the time, and are becoming the piece of technology every home should have. And you might be able to print one soon, who knows yourself.

(27) The word “they” in paragraph 2 refers to _________.

Write a complete sentence using the words and phrases given in each of the following questions. 

Volunteering activities / help / many teenagers / find / sense / purpose / life. 

Read the following passage and choose the correct answer that best fits each of the following blanks.

Helping the community is a meaningful way to give back and create a positive (21) __________ on the lives of those around us. When we help our community, we do things to help our neighbours and the people who live near us. This could mean picking up trash in the park, (22) __________ food to a local shelter, or planting flowers in a public garden.

Community helpers are like superheroes without capes. They volunteer their time and skills to support others. Even small acts of kindness, like smiling at your neighbours or helping an elderly person (23) __________ groceries, can make a big difference.

When we help our community, we (24) __________ strong relationships with the people around us. We create a place where everyone feels cared (25) __________ and valued. So, whether you're cleaning up a park or simply being kind to your neighbours, you're making your community a better and happier place for everyone.

Read the following passage and choose the correct answer that best fits each of the following blanks.

Helping the community is a meaningful way to give back and create a positive (21) __________ on the lives of those around us. When we help our community, we do things to help our neighbours and the people who live near us. This could mean picking up trash in the park, (22) __________ food to a local shelter, or planting flowers in a public garden.

Community helpers are like superheroes without capes. They volunteer their time and skills to support others. Even small acts of kindness, like smiling at your neighbours or helping an elderly person (23) __________ groceries, can make a big difference.

When we help our community, we (24) __________ strong relationships with the people around us. We create a place where everyone feels cared (25) __________ and valued. So, whether you're cleaning up a park or simply being kind to your neighbours, you're making your community a better and happier place for everyone.

Write the second sentence so that it has the same meaning as the given one in each of the following questions. Use the word in brackets.

 The last time I went kayaking was three years ago. (for)

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Chọn mệnh đề đúng trong các mệnh đề sau:

Read the following passage and choose the correct answer that best fits each of the following blanks.

Helping the community is a meaningful way to give back and create a positive (21) __________ on the lives of those around us. When we help our community, we do things to help our neighbours and the people who live near us. This could mean picking up trash in the park, (22) __________ food to a local shelter, or planting flowers in a public garden.

Community helpers are like superheroes without capes. They volunteer their time and skills to support others. Even small acts of kindness, like smiling at your neighbours or helping an elderly person (23) __________ groceries, can make a big difference.

When we help our community, we (24) __________ strong relationships with the people around us. We create a place where everyone feels cared (25) __________ and valued. So, whether you're cleaning up a park or simply being kind to your neighbours, you're making your community a better and happier place for everyone.

Choose the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Write a complete sentence using the words and phrases given in each of the following questions. 

The internet / enable / people / connect / globally / since / its invention.

Read the passage and choose the correct answer to each of the following questions.

1. Imagine this: Your little brother's favourite toy car has a broken wheel, and he's about to cry. You're not worried, though. You take some pictures of the broken part and use your 3D printer to make a new one.

2. 3D printers are amazing machines that can create objects from digital designs. Surprisingly, people first thought of this idea way back in 1984, and by 1993, they started a company to make it happen! Since 2004, 3D printers have become small and affordable, so almost anyone can have one at home. In 2018, they sold more than half a million of them around the world.

3. How do they work? Well, instead of using ink like regular printers, 3D printers use materials like plastic or metal. They put these materials layer by layer to build a 3D shape.

4. People are using 3D printers to make all sorts of things, like jewelry and decorations. Even sports companies are using them to make shoes that fit perfectly. And doctors use 3D printers to make things like replacement bones. It makes surgeries easier and helps people get better faster.

5. 3D printers are developing all the time, and are becoming the piece of technology every home should have. And you might be able to print one soon, who knows yourself.

(26) Which of the following can be the best title for the passage?

Choose the answer to fill in the blank in each of the following questions. 

The machine was tested to ensure it was __________ for different weather conditions.

Choose the answer that is CLOSEST in meaning to the underlined word/phrase in each of the following questions.

Donations of food and clothing can make a difference in the lives of impoverished individuals.

Write the second sentence so that it has the same meaning as the given one in each of the following questions. Use the word in brackets.

They will exhibit the modern art collection at the museum. (be)

____________________________________________________

Read the passage and choose the correct answer to each of the following questions.

1. Imagine this: Your little brother's favourite toy car has a broken wheel, and he's about to cry. You're not worried, though. You take some pictures of the broken part and use your 3D printer to make a new one.

2. 3D printers are amazing machines that can create objects from digital designs. Surprisingly, people first thought of this idea way back in 1984, and by 1993, they started a company to make it happen! Since 2004, 3D printers have become small and affordable, so almost anyone can have one at home. In 2018, they sold more than half a million of them around the world.

3. How do they work? Well, instead of using ink like regular printers, 3D printers use materials like plastic or metal. They put these materials layer by layer to build a 3D shape.

4. People are using 3D printers to make all sorts of things, like jewelry and decorations. Even sports companies are using them to make shoes that fit perfectly. And doctors use 3D printers to make things like replacement bones. It makes surgeries easier and helps people get better faster.

5. 3D printers are developing all the time, and are becoming the piece of technology every home should have. And you might be able to print one soon, who knows yourself.

(28) 3D printers became something many people could afford in __________.

Choose the answer to fill in the blank in each of the following questions.

It's convenient __________ a GPS navigation system in your car.

Choose the best sentence that is written from the words and phrases in each of the following questions.

Longevity / can / impact / by / environmental factors / such / air quality / access / clean water.

Read the following passage and choose the correct answer that best fits each of the following blanks.

Helping the community is a meaningful way to give back and create a positive (21) __________ on the lives of those around us. When we help our community, we do things to help our neighbours and the people who live near us. This could mean picking up trash in the park, (22) __________ food to a local shelter, or planting flowers in a public garden.

Community helpers are like superheroes without capes. They volunteer their time and skills to support others. Even small acts of kindness, like smiling at your neighbours or helping an elderly person (23) __________ groceries, can make a big difference.

When we help our community, we (24) __________ strong relationships with the people around us. We create a place where everyone feels cared (25) __________ and valued. So, whether you're cleaning up a park or simply being kind to your neighbours, you're making your community a better and happier place for everyone.

Choose the answer that indicates the underlined part that needs correction in each of the following questions.

The development of social media has complete changed how we connect with friends and family.

Choose the answer that indicates the underlined part that needs correction in each of the following questions.

Have you call your parents and told them about the party yet?

Write the second sentence so that it has the same meaning as the given one in each of the following questions. Use the word in brackets.

 “You should spend more time in nature,” the doctor told me. (advised)

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