18.一本书,已经看了总页数的百分之六十,没有看的页数与全书总页数的比是( )
0 137903 137911 137917 137921 137927 137929 137933 137939 137941 137947 137953 137957 137959 137963 137969 137971 137977 137981 137983 137987 137989 137993 137995 137997 137998 137999 138001 138002 138003 138005 138007 138011 138013 138017 138019 138023 138029 138031 138037 138041 138043 138047 138053 138059 138061 138067 138071 138073 138079 138083 138089 138097 199269
| A. | 2:5 | B. | 2:3 | C. | 3:5 |