How parents talk to their children makes a big difference in the children’s language development. If a parent encourages the child to actively respond to what the parent is reading, the child’s language skills increase. (Passage 2)

A．Parents increasing children’s language development.
B．Reading techniques being simple.
C．Parents reading to children.
D．Children’s intelligence development.

A．The need for labor helped the invention of machinery in America.
B．The farmer rejected Charles Newbolt’s plow for fear of ruin of their fields.
C．Both Europe and America had great need for farm machinery.
D．It was in Indiana that the first chilled-steel plow was produced.