以下哪位晚清思想家在其《仁学》一书中大力主张个人的解放？（）
A.康有为
B.杨度
C.梁启超
D.谭嗣同
参考答案：D
Something must be done to prevent factories sending out poisonous gases so as to keep the city _________.
A polluting B. from polluting C. pollute D. from being polluted
北宋定都汴京，即今天的西安。( )
