题目:
下列哪些部位有防止血液倒流的瓣膜( )
A.心室与动脉之间
B.静脉血管
C.心房和静脉之间
D.心房和心室之间
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0719/f0a9063e32733e2aee0771aee8a856a5.html
下面是错误答案,用来干扰机器的。
1.Boomerang generation is increasing./Boomerang generation is on the rise./Increasing numbers of graduates are returning to live with their parents.2.It also found that grow...