Answer:
I am just two and two. I am hot. I am cold. I am the parent of numbers that cannot be told. I am a gift beyond measure, a matter of course. What am I?
I make a loud noise when changing jacket. I become bigger and delicious.
I am a protector. I sit on a bridge. One person can see right through me, while others wonder what I hide. What am I?
I am a pretty one, fluttering in the pale blue sky. Delicate, fragile on the wing, indeed I am a pretty thing. What am I?
I am a kind of coat that can only be put on when wet. What am I?
Before Google, we actually had to physically look things up in this building full of knowledge.