升降机底板上放一质量为10kg的物体，物体随升降机由静止开始竖直上升6m时，速度达到10m/s，则此过程中（重力加速度g取10m/s²）（   ）

    It's September 13th today. It's my birthday. I get up early at 5:30 in the morning. After breakfast, I go to the park with my parents. We take many photos. In the afternoon, my father buys a big birthday cake for me. My friends make many beautiful cards for me. We eat the birthday cake together. I am very happy.

如图，点E在BC的延长线上，则下列条件中，能判定AD∥BC的是（   ）

用长是35米的篱笆靠墙围成如图所示的苗圃，苗圃面积是____平方米。