形成髓质高渗梯度的重要结构是
A．近曲小管B．髓襻C．直小血管D．远曲小管E．集合管
参考答案：B
—Whom would you rather have ____ with you, Mary or Jane?
—___.
A．to go; Either
B．go; Either
C．gone; Neither
D．going; Anyone
在市场上供应的灯泡中，甲厂产品占70%，乙厂占30%，甲厂产品的合格率是95%，乙厂的合格率是80%，则从市场上买到一个甲厂生产的合格灯泡的概率是______．
