【正确答案】 A

【答案解析】[听力原文] 17-20
Jenny never wanted to be a national public figure. All she wanted to be was a mother and a homemaker. But her life was turned upside down when a motorist distracted by his cell phone, ran a stop sign and crashed into the side of her car. The impact killed her two-year-old daughter. Four months later, Jenny reluctantly but courageously decided to try to educate the public and to fight for laws to ban drivers from using cell phones while a car is moving. She wanted to save other children from what happened to her daughter. In her first speech, Jenny got off to a shaky start. She was visibly trembling and her voice was soft and uncertain. But as she got into her speech, a dramatic transformation took place. She stopped shaking and spoke with a strong voice. For the rest of her talk, she was a forceful and compelling speaker. She wanted everyone in the audience to know what she knew without having to learn it from a personal tragedy. Many in the audience were moved to tears, and to action. In subsequent presentations, Jenny gained reputation as a highly effective speaker. Her appearance on a talk show was broadcast three times transmitting her message to over 14,000,000 people. Her campaign increased public awareness of the problem and prompted over 300 cities and several states to consider restrictions on cell phone use.
[解析] 细节题。Jenney因为孩子去世而开始了她的演讲生涯，这使她成为了公众人物，所以这是她人生中重要的变化，因此正确答案为A。

【正确答案】 C

【答案解析】[解析] 细节题。文章说由于司机开车时打电话而导致了事故，由此可知他当时没有集中精力开车，因此本题答案为C。

【正确答案】 D

【答案解析】[解析] 细节题。根据对她初次演讲的描写，可知本题答案为D。

【正确答案】 A

【答案解析】[解析] 推断题。文章讲了她希望通过自己的演讲而使同样的悲剧不要重演，由此可以推断出以后可能会禁止开车时打电话，故本题选A。