补全短文。
nervous visited by clouds went sky had saw |
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
的值的一个流
断框内应填入的条件是
应中氧化剂与还原剂的物质的量之比为1∶2的反应是