柔性版溶剂型颜料油墨，一般可分为纸张油墨、聚（）薄膜油墨和聚氯乙烯薄膜油墨等。
A.酯
B.酰胺
C.烯烃
D.四氟
参考答案：C
Many lifestyle patterns do such _____ great harm to health that they actually speed up _____ weakening
of the human body.[ ]
A. a；/
B. /；the
C. a；the
D. /；/
