首页 / 高中英语 / 试题详细
  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 324

Not until the early years of the 19th century ________ what heat was.

A.man did know B.did man knew
C.didn't man know D.did man know
登录免费查看答案和解析

Notuntiltheearlyyearsofthe19th