1.如果$\frac{a}{b}$的分子加上2a,要使分数的大小不变,分母应该是( )
0 157816 157824 157830 157834 157840 157842 157846 157852 157854 157860 157866 157870 157872 157876 157882 157884 157890 157894 157896 157900 157902 157906 157908 157910 157911 157912 157914 157915 157916 157918 157920 157924 157926 157930 157932 157936 157942 157944 157950 157954 157956 157960 157966 157972 157974 157980 157984 157986 157992 157996 158002 158010 199269
A. | 2a+b | B. | 2ab | C. | 3b |