题目

  Mary will never forget the the first time she saw him. He suddenly appeared in class one day, ____41____(wear) sun glasses. He walked in as if he ___42___(buy) the school. And the word quickly got around that he was from the New York City.   For some reason he sat beside Mary. Mary felt ___43___(please), because there were many empty seats in the room. But she quickly realized that it wasn’t because of her, and it was probably the fact that she sat in __44___ last row.   ___45__ he thought he could escape attention by sitting at the back, he was wrong. It might have made it a lit下列过程中人对物体做了功的是A．人提着水桶水平移动10mB．人推铅球，铅球在空中飞行10m的过程C．人用10N的水平推力推着物体在光滑水平面上移动10mD．人举起杠铃在空中保持不动的过程