题目

The fans in Chicago admire Michael Jordan ______ he is no longer fighting for the Chicago Bulls. A . since B . however C . even if D . when 答案：C下列做法，利于北京市可持续发展的是(　　)A.利用名胜古迹发展旅游B.在城区大量开采地下水C.山区砍伐林木，增加耕地面积D.鼓励外地人口迁入，扩大城市规模