70．Madagascar's unique biodiversity is due to________.

　　A.the ongoing ecological process of the island

　　B.the geological history of the island

　　C.the rare and threatened animals on the island

　　D.the unique plants on the island

　　E

　　(2017·济南二月月考)

　　Almost 20 years ago, a few days before Christmas, Roni Austin's 6­year­old daughter, Lauren, went to a Jack in the Box in Carlsbad and ate a hamburger. She got sick, was rushed to a hospital and never came home. Lauren was the first to die in a multi­state E._coli outbreak that killed three other children and sickened 700 people.

　　Like many people, Austin had never heard of E. coli before. At first bewildered, and then angry, Austin soon became the face of food­safety reform in California and beyond. She co­founded a nonprofit group, Safe Tables Our Priority(STOP), and pushed successfully for legislation (立法) requiring E. coli to be a reportable illness, so outbreaks could be followed and stopped sooner.

　　Nervous initially to be in the spotlight, she learned not to fear politicians for the beef and fast­food industries. She was in the Oval Office when President Clinton signed the most sweeping changes to federal food­inspection law in the 1990s. She was in Sacramento when a state measure named after her daughter passed, indicating minimum cooking temperatures in restaurants.

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