The Berenstains' hyperkinetic young bears -- one a he and one a she -- are busy here observing their elders drive dump trucks and trains, fix wires and put out fires, teach, paint, heal, sing, build, knit, perform, etc. -- and imagining themselves in the same roles, all to prove that ""We can do all these things, you see,/ whether we are he OR she."" Mechanical ebullience, obviously manufactured to meet current demand, though just as obviously on the mark.