Hình vẽ nào sau đây vẽ đúng chiều của đường sức từ xung quanh dây dẫn thẳng có dòng điện? 

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose a word that has different stress pattern:

   major              event                  decline               rename

• Choose a word that has different stress pattern:

   marry             program             spirit              perform

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

   teenager                 agree               organize               degrade

• Choose the best answer for the following sentence:

  The water in the lake must be ___________ before you use it.

   

• Choose the best answer for the following sentence:

  Most feminists object  to beauty contests in which contestants are in _____________ 

  swimsuits and ___________ high-heeled shoes.

   

• Choose the best answer for the following sentence:

  Beauty contests increased _________ most in _________ popularity in 1960.

    

• Choose the best answer for the following sentence:

  Beauty contests are very popular__________ teenagers in Venezuela.

   

• Choose the best answer for the following sentence:

  A beauty contest is a competition based largely ______________  the beauty of the

  contestants’ physical appearance.

   

• Choose the best answer for the following sentence:

  You have not participated __________ any of our competitions before, have you?

   

• Choose the best answer for the following sentence:

  _________ a contest requires a good preparation.