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The Stonehenge is in Wiltshire in the southwest of 1. __________ (English). People 2. __________ (build) it in the Stone Age. Who 3. __________ (build) it? Why did they 4. __________ (build) it? No one 5. __________ (know). It is a 6. __________ (mystery). Now many people 7. __________ (go) there every year. They 8. __________ (see) the stones and they 9. __________ (want) to 10._________ (find) the answer.
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
