如图，在平面直角坐标系中，每个小正方形边长都为1个单位长度．

①画出将△ABC向下平移4个单位得到的△A₁B₁C₁；

②画出△ABC关于原点O的中心对称图形△A₂B₂C₂；

③画出△A₁B₁C₁绕着点A₁顺时针方向旋转90°后得到的△A₃B₃C₃．

    Yuki Bhambri is one of the best tennis players in India. He was born (出生) in New Delhi in July, 1992. Yuki has a sporty family.____two sisters and a cousin are all good tennis players. Maybe because of that, Yuki started playing tennis young -- at the ____of six. It was soon clear that Yuki was more ____than many other players of his age.

    In 2008, Yuki played in the four Junior Grand Slam Tournaments (青少年大满贯锦标赛). They are quite important tennis games____ juniors He didn't win any of those games,____the world got to know the talented young tennis player. In the same year, Yuki won the Orange Bowl, another important tennis game in the world. He was the ____ Indian player to win that game. In 2009, Yuki won the Junior Australian Open. Then in 2010 he played in the first Youth Olympic  Games in Singapore and ____ the silver medal (银牌).

    There are not always happy and exciting moments (时光) in the tennis star' s life. Once Yuki had to stop ____an important game because of an injury. He felt sad. However, his love for tennis never ____ He takes every game seriously and ____the world that he is a really good tennis player.

在测量额定电压为2.5V的小灯泡额定功率的过程中，当小灯泡两端的电压为2.5V时，用电流表测量通过小灯泡的电流，其量程选择和指针的位置如图所示，则此时通过小灯泡电流的测量值为____ A，小灯泡额定功率的测量值为____ W。