渔夫说着,把网拖进屋里,坐在炉子旁边。
“我?”桑娜脸色发白,说,“我……缝缝补补……风吼得这么凶,真叫人害怕。我可替你担心呢!”
“是啊,是啊,”丈夫喃喃地说,“这天气真是活见鬼!可是有什么办法呢!”
两个人沉默了一阵。
桑娜沉默的原因是:
桑娜的丈夫沉默的原因是:
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