A.他神情有点儿紧张,勇敢地开口了:“同志,买,买,买……” |
B.它决定要出去玩玩,就会出走一天一夜,任凭谁怎么呼唤?它也不肯回来。 |
C.“这是琥珀,孩子。”他高兴地说,“有两个东西关在里面呢。” |
D.它的旧主人告诉我:养鹅等于养狗,它也能看守门户。 |
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