Cho dãy các kim loại sau: Na, K, Mg, Al. Số kim loại kiềm trong dãy trên là?         

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Một số câu hỏi khác có thể bạn quan tâm.

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  "You broke my glasses", said the woman to me.

   

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  "Let's go out for a walk now", he suggested.

      

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  “I was not there at the time”, he said.

    

• Mark the letter A, B, C or D to Indicate the sentence that in closest in meaning to each of the following questions:  

  “If I were you, I would try to finish the pre-lab report before carrying out the experiment.” the professor said to his students.         

• Mark the letter A, B, C or D to Indicate the sentence that in closest in meaning to each of the following questions:

  He started computer programming as soon as he left school.         

• Mark the letter A, B, C or D to Indicate the sentence that in closest in meaning to each of the following questions:

  Twice as many men as women are insurance agents.          .  

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  "How fashionable your dress is!" they said to the lady.         

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  You can never be sure about the accuracy of TV weather reports.  

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  Of the members, half were for the proposal and half were against.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:   

  It’s no use asking her for help.