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Old Peter is a very, very, very old man. He knows everything-he thinks. One day, a boy called Sam asked him where China was. Old Peter told Sam it was in the east of Asia (亚洲). Sam asked him where Loulan State was. Old Peter told Sam it was in the west of China. Sam asked him where Loulan Garden was. Old Peter told Sam it was in the middle of Loulan. But Sam told Old Peter there was no garden in Loulan. Old Peter said, “Then it's in my heart.”
1．China is2．Loulan State was
3．There
4．Old Peter
5．Sam
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
