MOST COMETS HAVE TWO KINDS OF TAILS, ONE MADE UP OF DUST, ………MADE...

48. - 2000 CAU TRAC NGHIEM ANH A B C
2000 CAU TRAC NGHIEM ANH A B C

48. Most comets have two kinds of tails, one made up of dust, ………

made up of electrically charged particles called plasma.

a. one another

b. the other

c. other ones

d. each other

 b