Few people believed the dam had been burst because there had been too many false alarms.

A．adults showed less concern for children than we do now
B．adults were smaller and thinner at that time; but they still had a lot of work to do
C．children looked and acted like adults at that time
D．children were not permitted to appear in family paintings at that time

A．It is very difficult for the middle-aged to live in America.
B．America is Kids' Country because the majority of its people are young and vigorous.
C．Kids' Country was taking shape in America when immigrants poured into the country.
D．America is more of Kids' Country than any other countries in the world.