Which detail from the passage allows the reader to predict that Alice has stepped into an unusual place? The very first thing she did was to look whether there was a fire in the fireplace, and she was quite pleased to find that there was a real one
“So I shall be as warm here as I was in the old room,” thought Alice: “warmer, in fact, because there'll be no one here to scold me away from the fire.
Then she began looking about, and noticed that what could be seen from the old room was quite common and uninteresting . . .
. . . and the very clock on the chimney-piece (you know you can only see the back of it in the Looking-glass) had got the face of a little old man, and grinned at her.