Science is often built on the destruction of existing paradigms and is a continuously evolving process.

A．husband and wife can share housework
B．two adults are always better than one
C．the fundamental importance of mothers can be fully recognized
D．husband and wife can compensate for each other's shortcomings

A．this improve kids' mathematical and verbal abilities
B．the more time spent with kids, the better they speak
C．the more strict the fathers are, the cleverer the kids
D．girls usually do better than boys academically