A.Because these high-techs have severely affected our power in the world.
B.Because they only bring us confusing ideas and funny entertainments.
C.Because they are designed to confine our horizons to a certain scope.
D.Because they haven't brought us the effect on our life they are supposed to.
A.will finally lead to a stupid race of human beings
B.has brought an effect opposite to our previous anticipation
C.proves to be effective and efficient for modem people
D.is so popular that we can see them everywhere we go