BEIJING -- Chinese-Canadian pop star Kris Wu was arrested Monday on suspicion of rape in a high-profile case that followed an accusation the singer had sex with a 17-year-old while she was drunk and lured young women into sexual relationships.The prosecutor’s office of the Beijing district of Chaoyang said in a one-sentence statement that Wu’s arrest was formally approved but gave no details of the charges.Wu, 30, earlier denied the accusation by a teenager that he had sex with her while she was