— Hi, Vera, have you checked the account yet?

— Certainly, I ______ it five times even though you told me to do it twice.[ ]

A. checked    

B. will have checked    

C. have been checking    

D. had checked

东亚的居民绝大部分属于（　　）

A．黄色人种

B．白色人种

C．黑色人种

D．混血人种