[单选题]

29． When it thunders, we always see the light before we hear the sound．______ It’s because
A． our eyes are in front of our ears
B． our eyes are cleverer than our ears
C． our eyes can see but our ears can-t
D．light goes faster than sound

29． When it thunders, we always see the light before we hear the sound．______ It’s becauseA． our eyes are in front of our earsB． our eyes are cleverer than our earsC． our eyes can see but our ears can-tD．light goes faster than sound