—So you missed the meeting yesterday.
—________.I got there five minutes before it was finished.
A:All right
B:No problem
C:Not exactly
D:Never mind
如图,△ABC中,BO,CO分别是∠ABC,∠ACB的平分线,∠A=50°,则∠BOC等于( )
下列关于观察与实验的叙述,正确的是( )
下列各句中,没有病句的一句是 ( )