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Nancy and Linda are five years old. Nancy and Linda are playing “Hide-n-Seek” now. First Nancy is looking for Linda. Where is Linda? She isn’t behind the tree. She isn’t under the chair, too. Nancy can’t find Linda. She is unhappy. So she cries. Linda runs to Nancy and asks: “What’s the matter?” Nancy smiles and says: “I find you.”
1．Nancy and Linda are primary school students. （2．They are playing “Hide-n-Seek”. （
3．First Linda is looking for Nancy. （
4．Linda is under the chair. （
5．Nancy finds Linda by herself. （
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 = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
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 = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
