Trong quá trình luyện gang, người ta thường sử dụng chất nào sau đây để loại bỏ SiO₂ ra khỏi gang?

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Find a mistake in the four underlined parts of the sentence and correct it:

  It’s him who has won the gold medal for men’s long jump.

• Choose one sentence that has the same meaning as the root one:

  Tom is good at English. He is good at French, too.
  
  

• Choose one sentence that has the same meaning as the root one:

  People think Mrs. Nga is a good step mother.
  
  

• Choose one sentence that has the same meaning as the root one:

  It is said that Tom married a girl whose father is a millionaire two years ago.
  
  

• Choose one sentence that has the same meaning as the root one:

  People say a water park is going to be built in our area.
  
  

• Choose one sentence that has the same meaning as the root one:

  The car was heavy but he managed to lift it.
  
  

• Choose one sentence that has the same meaning as the root one:

  He is honest so she loves him.
  
  

• Choose the best answer for the following sentence:

  John asked me ___________.

• Choose the best answer for the following sentence:

  I missed ___________ to him on the phone because I was so busy ___________ the dinner.

   

•  Choose one sentence that has the same meaning as the root one:

  Although Susan has a good job, she cannot afford to move out of her parents’ house.