人的排尿反射是简单的反射还是复杂的反射？胸部脊髓断裂的病人为什么大脑不能控制排尿？
简单反射；神经冲动不能从大脑传到脊髓
资料：在同温同压下，气体的体积之比等于分子个数之比．
Women are so accustomed to decades of __________ and to __________ histories of women whose contributions went unnoticed that they assume these conditions still exist today.
填空题
谈谈《过零丁洋》颈联的“惶恐”“零丁”的双层含义。
