题目

Psychiatrists（精神病专家），who work with older parents say that maturity can be an asset（资产） in child raising----older parents are more thoughtful, use less physical discipline and spend more time with children. But raising kids takes money and energy, many older parents find themselves balancing their limited financial resources, declining energy and failing health against the growing demands of an active child．Dying and leaving young children is probably the older parents’ biggest and often unspoken fear. Having late-life children, says an economics professor, often mea方程是含有未知数的等式等式，求方程中未知数的解解的过程，叫做解方程．