题目

I got an email this morning. It's ___________________ my best friend, John. A . in B . of C . at D . from 答案：D如图，AB是⊙O的直径，点C，D在⊙O上，=，OD∥AC，下列结论错误的是（ ）A．∠BOD=∠BACB．∠BOD=∠CODC．∠BAD=∠CADD．∠C=∠D