[听力原文]
W: John, how are you I heard you were sick.
M: They must have confused me with somebody else. I’ve never felt upset.

How does John feel（）

A．the gravity on the earth is 80 times as big as that on the moon
B．the weight of the earth equals the weight of 18 moons
C．a stone can be thrown far away very easily on the moon
D．the moon is a good place to play golf