• 2022-06-19
    What is the finding of the new study?
    A: Quick-cooking microwave ovens have become more popular.
    B: The frequent use of microwaves may do harm to our health.
    C: CO₂ emissions constitute a major threat to the environment.
    D: The use of microwaves emits more CO₂ than people think.
  • 举一反三