Dear Simon,

    How are you? Last week I ____ to Xi'an. It's in the northwest of China. I went there ____ plane. The plane took us to the ____. First, I was a little  ____. Then I looked out of the window.

The plane was above the ____. I ____ some mountains below. I ____ lunch on the plane. Later I arrived in Xi'an. I ____ many interesting places. The trip was great!

Love,

Daming

在平面直角坐标系xOy中，过点A（﹣4，2）向x轴作垂线，垂足为B，连接AO．双曲线y=$\frac{k}{x}$经过斜边AO的中点C，与边AB交于点D．

（1）求反比例函数的解析式；

（2）求△BOD的面积．

①通过了《共同纲领》

②选举***为中央人民政府主席

③确定《义勇军进行曲》为代国歌

④确定五星红旗为国旗

⑤确定国徽

⑥采用公元纪年