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 1432

_____ to nuclear radiation, even for a short time, may produce variants (变异体) of genes in bodies.

A.Being exposed
B.Having exposed
C.Exposed
D.After being exposed
登录免费查看答案和解析

tonuclearradiation,evenforasho