What does "refurbished smart phone" mean in the third paragraph? ( )

(单选题)Anyone may borrow books, and it cost nothing to borrow them. (单选题)Hardly had the thief seen the policeman than he ran away. ( (单选题)I think it’s time that she makes up her mind. ( ) (单选题)Could you tell me something what I haven’t known? ( ) (单选题)Up till now, nothing ( ) Betty. I want to know the reason (单选题)-I should have gone to see the film with you. - ( ). (单选题)- ( ) have you been in Guilin?-Three weeks. (单选题)Eating better and eating less could be the ( ) not only t (单选题)So you have to leave. How nice it ( ) if you ( ) a bit (单选题)Don’t forget the day ( ) you were received into the Youth