A:is; i
B:are; are
C:is; are
D:are; i
选答语。
①What's your name? ____ A. I'm from China.
②Where are you from? ____ B. He's my grandpa.
③Who's that man?____ C. My name is Tutu.
②∠AOC+∠BOD=90°;③若OC平分∠AOB,则OB平分∠COD;④∠AOD的平分线与∠COB的平分线是同一条射线. 其中正确的个数有( )
在阅兵活动中,俄罗斯军人在踏步时要将下巴扬起,彰显自豪感;而中国军人受东方内敛文化影响则不要求扬起下巴,显得更加威严。这使我们认识到( )