A．There is a large space for the babies.
B．It is made of break-resistance material.
C．It is quite light.
D．It is painted with clowns.

A．Demonstrate how the product works.
B．Invite a volunteer to try the product.
C．Move on to talk about another product.
D．Ask another person to explain it in detail.

A．The man who has a high opinion of himself.
B．The man who has risen to the top through his own efforts.
C．The college professor who wins great respect from common workers.
D．The leader in business who occupies a higher social position.