Chiết suất tuyệt đối của một môi trường là chiết suất tỉ đối của môi trường đó đối với

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Một số câu hỏi khác có thể bạn quan tâm.

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

  Although he works hard, he gets bad marks.
  
  

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

  She goes to market because she needs some vegetable.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:

  share                rare                   are                   declare

• Choose the word that has the underlined part pronounced differently from the rest:

  cooks                 loves                     joins                   spends

• Choose the word that has the underlined part pronounced differently from the rest:

  advises                raises                 devises                 goes

• Choose the word that has the underlined part pronounced differently from the rest:

  teacher                 children                   chore                     school

• Choose the word that has the underlined part pronounced differently from the rest:

  hurry                under                 pressure                 rush

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

  Stayed strong, family members have to be engaged in each other’s lives.

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

  Sometimes all it takes is a few minutes to help you and your family members feeling more in touch with each other.

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

  Meal time also gives children a chance to learn how some of their favorite dishes making.