15.
如图,a∥b,∠1=70°,则∠2等于( )
0 297011 297019 297025 297029 297035 297037 297041 297047 297049 297055 297061 297065 297067 297071 297077 297079 297085 297089 297091 297095 297097 297101 297103 297105 297106 297107 297109 297110 297111 297113 297115 297119 297121 297125 297127 297131 297137 297139 297145 297149 297151 297155 297161 297167 297169 297175 297179 297181 297187 297191 297197 297205 366461
| A. | 20° | B. | 35° | C. | 70° | D. | 110° |