大自然是伟大的,它创造了人间,还安排了无数美景。三峡群山万壑,江轮在危岩绝壁间穿行,眼看要撞在迎面横过来的陡壁上,却灵巧地一闪,辟出一片别有洞天的景象。“山塞疑无路,湾回别有天”,真是巧夺天工,令人赞不绝口。
A.危岩绝壁 | B.别有洞天 | C.巧夺天工 | D.赞不绝口 |

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

