1.(4) ponderosity spends mental development arrearage: Intelligence quotient is in 20 the following, scarcer, occupy the 1% less than of mental development arrearage about.
(4)极重度精神发育迟滞:智商在20以下,较少见,约占精神发育迟滞的1%以内。
2.The classic case is someone on the brink of foreclosure . some investors check court records of divorces arrearages ,upcoming bankruptcy proceedings to find such people .