如图所示,在电场中,一个负电荷从C点分别沿直线移到A点和B点,在这两个过程中,均需克服电场力做功,且做功的值相同,有可能满足这种做功情况的电场是 ( ) ①正y方向的匀强电场 ②正x方向的匀强电场 ③在第Ⅰ象限内有负点电荷 ④在第Ⅳ象限内有负点电荷 A.①③④ B.①② C.③④ 根据所给情境,补全对话。【1】A:Can they ______ table tennis?B:No, they ______.【2】A:Can the boy swim?B:Yes. He can swim very ______.A:______ can the girl do?B:She ______ run.