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By Jon Schuppe and Jacob Rascon

Colorado theater shooter James Holmes passed up a last chance Wednesday to speak in court and help save himself from execution.

Holmes kept his silence after the jury weighing his fate heard from a final witness, a young woman who lost both her 6-year-old daughter and her unborn child in the July 2012 Aurora massacre.

Asked by Judge Carlos Samour if he wanted to take the stand or make a statement, Holmes said he did not.

Holmes has repeatedly declined to testify at the trial, which began on April 27. He was convicted last month, and the same jury is now considering whether Holmes deserves the death penalty or to spend the rest of his life in prison for killing 12 people and injuring 70 at a midnight screening of "The Dark Knight Rises."

Prosecutors and defense lawyers will deliver their closing arguments in the penalty phase on Thursday.

The penalty phase's testimony culminated on Wednesday with Ashley Moser, who wept on the stand as she described the emptiness of her life since her 6-year-old daughter, Veronica, was killed in the massacre.

Moser, pregnant at the time of the shooting, was critically injured, and also lost her unborn child. She testified from a wheelchair.

"I don't know who I am anymore, 'cause I was a mom when I was 18, and that's all I knew how to be," Mosley said.

Some jurors cried during her testimony, prompting Samour to warn jurors not to be swayed by their emotions.

Associated Press contributed.