阅读理解。 Liz Murray was only three years old when she realized her parents were hooked (吸毒成瘾的) on drugs. In 1996, just before Christmas, Liz's mother died and her father moved to a homeless shelter (收容所). Her mother's death inspired Liz to change her life. She decided go to high school, even though she was still homeless. At the age of 15, Liz was beginning high school at a time most teenagers were graduating, but she promised herself to become a 'straight-A student'. As she neared the end of her high school education, and with her straight-A grades, Murray graduated in only two years. She was awarded (被授予) a New York Times scholarship (奖学金) - $12,000 every year for four years for needy students and was accepted into Harvard (哈佛) University in the fall in 2000. With the scholarship money coming her way, Liz started her studies. While she was there, she began public speaking-helping people who, like herself, had an almost impossible mountain to climb to succeed in life. She left Harvard in 2001 to care for her sick father and to start motivational (励志的) speaking, she resumed (重新开始) her education at Columbia University to be closer to him. In late 2006, her father died of AIDS. And then she returned to Harvard in 2006 and graduated in June 2009. Liz says she took some comfort in knowing that her father had died a sober (清醒的) man. 'When someone gets sober, it's almost like meeting them for the first time. Just before he passed away, he wrote me this card. He wrote in the card, 'Liz, I left my dreams behind a long time ago. But I know now they're safe with you. Now we're a family again.' 1. Did Liz's parents take drugs? _______________________________________________________ 2. What made Liz change her life? _______________________________________________________ 3. How old was Liz Murray when she graduated from high school? _______________________________________________________ 4. Why did Liz Murray leave Harvard in 2001? _______________________________________________________ 5. What's the best title about the passage? _______________________________________________________