南昌宏宇学校
  首页 / 试题 / 高中英语 / 试题详细
  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:2001

The invention of artificial hearts marked a turning point in the battle       heart disease.

A.among B.for C.against D.between
登录并查看解析

The invention of artificial he