4.( ) Only the deaf appreciate hearing, only the blind realize many benefits that lie in sight.
举一反三
- Which of the following statements about communication by hearing is true（） A: Communication by hearing is more important than communication by sight. B: Whistling and applauding are the only two forms of communication by hearing. C: Handshaking, as well as hand-stroking, has enabled the blind to communicate by hearing. D: It is possible to communicate intelligently by hearing.
- People are likely to repond to a policy change A: only if they think the policy is a good one B: only if the policy change changes the benefits of their behavior C: only if the policy change changes the costs of their behavior D: only if the policy change changes either the costs or benefits of their behavior
- thinking in black-and-white terms. A: only if they think the policy is a good one. B: only if the policy change changes the costs of their behavior. C: only if the policy change changes the benefits of their behavior. D: if the policy changes either the costs or benefits of their behavior.
- Only in this way___ that you made a mistake. A: Youcan realize B: did you realize C: can you realize D: before you realize
- Only when he returned home____he realize what had happened.