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第I卷 第一部分 阅读理解 （共两节，满分40分） 第一节（共15小题；每小题2分，满分30分） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。 A 难度：★★ Experts say heavy backpacks are a health risk for kids. Like little turtles with limbs poking（伸出） out from their shells, kids shuffle（拖着脚而走）their way to school every day wearing giant backpacks. Even high school students have to bend forward to carry their heavy books to and from school with a lot of effort. It?s frustrating and looks a little silly, but is it dangerous? Yes, say many experts. “Kids are saying ‘My back hurts, my neck and my shoulders hurt,’” says Dr. Karen Jacobs, a clinical professor at Boston University. “A heavy backpack can also contribute to headaches, slow development and other physical problems.” Jacobs is also a spokesperson for the American Occupational Therapy Association, which sponsors a national school backpack awareness day on September 16. She says that too many textbooks, crowded schools and less locker space are making backpacks bigger. “Since at least 1998, we抳e noticed backpacks getting bigger and heavier, and not in proportion to y（与……成比例）the kids’ sizes,” Jacobs says. | 
