Austin, 64, is not sure she has much choice. Every time she thinks she's handed off the baton(指挥棒) to others, though, something brings her back. A phone call from a parent who has lost a child to a food­borne illness. A news story about another outbreak. An event at La Costa Heights Elementary School, where redheaded Lauren was in first grade and where a memorial garden was planted in her honor.

　　Fixing food safety meant putting her career as a fashion designer on hold and flying 10 times to Washington DC to testify. It meant going to Sacramento to speak a half­dozen times. She's not fond of the legislative process. Asked what she's proudest of in making her way through all that, she said, “That I didn't give up.”

　　文章大意：Roni Austin六岁的女儿因为食品问题而丧生，这激起了一位母亲的斗志。从此，Roni Austin就开始了为食品安全而奔波的道路。

　　71．What does the underlined word “E. coli” in Paragraph 1 refer to?

　　A. A fast­food restaurant.

　　B. A special person.

　　C. A reportable illness.

　　D. A state of America.

　　72．The third Paragraph is mainly about________.

　　A. the great changes in food inspection

　　B. Austin's efforts to achieve food safety

　　C. the standards and practices of safe food

　　D. the federal plan to monitor food production

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