• 2022-06-09
    Prof. Hoffmann told Dr. Pan that Carl Sagan, who wasa professor of astronomy at Cornell University, would be the most important scientist in modern America, not because he was _____________, but because he taught Americans to be interested in space.
    A: the best astrophysicist
    B: the best quantum physicists
    C: the best nuclear physicist
    D: the best theoretical physicist