Answer:
I am the first you ever saw, what greets you every morning and what goes out in the end.
You are on an electric train. Which direction will the smoke fly in?
I am the yellow hem of the sea's blue skirt.
Mountains will crumble and temples will fall, and no man can survive its endless call. What is it?
Often wandering the streets, this group of people cannot afford to be choosers.
Before Google, we actually had to physically look things up in this building full of knowledge.