听力原文:M: Hold the body of the camera with your right hand, and the lens with your left.
W: OK. The view is blurry. How do I focus the camera?
M: Turn the ring in the lens in one direction until whatever you're pointing at looks sharp. If that doesn' t work, try turning it the opposite way.
W: Right. I' ve got it. That' s pretty neat. What else can you teach me?
What is the man teaching the woman?
A.How to clean a camera
B.How to buy a camera
C.How to store a camera
D.How to use a camera