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1. Polar bears are very big, their ________ is white. (r, f, u)
2. In winter, the arctic hares make ________ under the snow. (n, e, n, l, t, u, s)
3. In ________ it is very cold. (n, t, I, w, r e)
4. Sometimes my friends and I ______ an igloo. (b, d, l, i, u)
5. A: What’s over there?
B: A, big, big ________. (r, b, a, e)
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
