A:到市场上购物,挑选中意的商品
B:旁听一次价格听证会
C:参加学校举办的艺术节活动
D:就道路问题向交通局提出建议
— Mom, I was the first to reach the top of the mountain.— Good job, Charlie. I'm ______ of you.
——Canada is one of the largest______ in the world.
——That is, it is larger than ______ country in Asia.
复数1-1i3(i为虚数单位)的共轭复数在复平面上对应的点的坐标是( )