• 2022-06-07
    According to the passage, when could people start using a maglev commercially A) In 5 years. C) In 20 years. B) In 10 years. D) In more than 20 years.
    A: According to the passage, when could people start using a maglev commercially
    B: In 5 years.
    C: In 10 years.
    D: In 20 years.
    E: In more than 20 years.