会计学RegularRuleofGrowth&DevelopmentAffectingFactorsofPhysicalGrowth身高(shēnɡāo)（长）BodyHeight(BH)＜3yrs(crown-rumplength)Criterionofskull&spinegrowthSH/BHatbirth0.6714years0.53下肢(xiàzhī)增长速度随年龄增长而加快指距fingerdistance胸围(xiōnɡwéi)ChestCircumference(CC)上臂(shàngbì)围UpperArmCircumference长骨(chánggǔ)的发育GrowthofLongLone神经反射(fǎnshè)的发育NerveReflexesnotexistingbybirthbutappearinggraduallyafter4-6monsnotexistingbybirthbutappearinggraduallyafter4-6mons一哭二笑三咿呀四月哈哈望妈妈(māmā)五抓六坐握足玩七翻八爬九叫爸十站对指十二走看图说话在十八两岁能用勺吃饭喜怒分明命令发三岁学穿鞋和袜长成大娃别娇他谢谢(xièxie)