【单选题】听力原文:It's amazing what you can see when you don't look. Astronomers often practice a technique known as averted vision to see very faint things. By looking to the side rather than straight on, they av...
A.
The term 'averted vision' refers to the act of looking out of the comers of one's eyes.
B.
If you want to see very faint things, you should better look sideways rather than straight on.
C.
The receptors located in the eye's center are less sensitive to dim light.