单选题 The editors said they must report to the world how Beijing has ______ pollution and improved the quality of the environment.
A. cut up B. cut off C. cut down D. cut out

【正确答案】 C

【答案解析】cut down砍倒，削减；cut down pollution减少污染；cut up 抨击，歼灭；cut off切断，断绝；cut out切掉，取代。