【简答题】1) ______ A) A host of City Center Talk B) An employee at the City Center C) An ordinary person who did something great D) An amazing nurse who saved a patient’s life 2) _______ A) Because the girl wa...
【单选题】A 30-kg girl steps to shore from a 60-kg boat, giving the boat an acceleration of 2 m/s2. If water resistance is neglected, the girl receives an acceleration of