試題詳解

23. We speak of hearing as if it were something that we do, an action that we perform.
(A) Actually, hearing is not so much something that we do as it is something that happens to us.
(B) It is some system in which signals are telegraphed to the brain.
(C) Whenever we hear something, the air around us is disturbed.
(D) Something causes particles of air to move and push against other particles of air. ¯