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 405

It is said that sixty percent of all energy ________ in the world today is being lost as waste heat.

A.produced B.producing
C.to produce D.having produced
登录免费查看答案和解析

Itissaidthatsixtypercentofalle