Chen Jie: Really? 1 Amy: It’s black and white. Look! It’s so heavy. Chen Jie: 2 Amy: Some English books, some story-books, and many picture books. Chen Jie: 3 Amy: Let me count. 1, 2, 3, 4…15. I have 15 picture books. Chen Jie: 4 Amy: Sure. Here you are. Chen Jie: Wow! A fat panda! 5 抱歉,您未登录!暂时无法查看答案与解析!
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同类型试题y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴 y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴 我要答疑
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