X là chất rắn, dạng sợi màu trắng, không tan trong nước. Tên gọi của X là

Dung dịch chất nào sau đây không hòa tan được Al(OH)₃?

Nước cứng vĩnh cửu tác dụng với chất nào sau đây thu được kết tủa?

Kim loại nào sau đây dẫn điện tốt nhất?

Kim loại nào sau đây có tính nhiễm từ?

Lên men 1 tấn khoai chứa 85% tinh bột để sản xuất ancol etylic, hiệu suất của cả quá trình sản xuất là 70%. Khối lượng ancol thu được là

Vào mùa đông, nhiều gia đình sử dụng bếp than đặt trong phòng kín để sưởi ấm gây ngộ độc có thể dẫn tới tử vong. Nguyên nhân gây ngộ độc là do khí

Trong điều kiện không có oxi, sắt phản ánh với lượng dư dung dịch nào sau đây sinh ra muối sắt(III)?

Kim loại kali phản ứng với clo sinh ra sản phẩm nào sau đây?

Mary felt a bit under the weather. She tried to go to work. (although)

→ ______________________________________________.

Mai does not have enough money. She can’t buy her favorite book. (If)

→ ______________________________________________.

Eric plays the guitar for a small group. He can earn some extra money. (in order to)

→ ______________________________________________.

The weather was very bad. They could not continue their trip. (too)

→ ______________________________________________.

If Jack doesn't change his working style, he will get the sack sooner or later.

→ Unless _____________________________________________.

“Are you interested in talking to the boss?”, he asked me.

He asked me ___________________________________________.

People say that Nam is playing for a big football club in London.

→ Nam is said __________________________________________.

They have just finished the project.

→ The project has ____________________________.

What is NOT true about Vincenzo Peruggia?

According to the passage, Leonardo da Vinci ________.

The word “hiding” in paragraph 3 is closest in meaning to ________.

The word “it” in paragraph 2 refers to ________.

What is the best title for this passage?

We should be responsible for the destroy which humans are doing to the environment.

Were I have enough money, I would go abroad to improve my English.

Mark A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Mark A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Jenny's teacher compliments on her work.

Teacher: “Jenny, you’ve done a good job on the project.”

Jenny: “__________”

Doctor: “How long has your headache been going on?”

Patient: “__________”

I am interested in your community development projects because I really _______ about the life of people in the community and want to offer my services to you.

Minh said that he had bought that car _______.

If I don’t write you a note to say you have a doctor’s appointment, the teacher will think you are playing _______.

Lam does not play badminton _______ her younger sister.

Before David left school, his mother told him to start thinking about choosing a(n) _______.

He went back to work in his country after he _______ his course on Advanced Engineering in London.

The Turkish manager hasn’t got _______ to say about the team’s terrible performance.