1．重点单词：block，worker，stare，disbelief，above，burn，alive，airport，till，west
2．重点短语：arrive at，in disbelief，hear about，the next day，in line with
3．重点句式：
How did the writer end up missing both events?
I was about to go up when I decided to get a coffee first.
We stared in disbelief at the black smoke rising above the burning building.
I felt lucky to be alive.
What bad luck!
