A．Biologists are conducting research where psychologists have given up.
B．Brain differences point to superiority of one sex over the other.
C．Results of scientific research fail to support popular belief.
D．The structural difference in the brain between the sexes has long been known.

A．Nine out of ten cats have a better chance of survival.
B．What is the significance of the seventh floor
C．What’’s the cats’’ terminal speed
D．Most cats can survive when falling.