下图人物的主要功绩是
A、建立元朝
B、定都大都
C、统一蒙古
D、创制蒙古文字
C
The moment 2011 BWF Super Series Masters Finals________ open, all the fans and the viewers cheered.
A．declared
B．were declared
C．had declared
D．have been declared
其他放射性元素、同位素及其化合
