一.识字加油站
会认字:
狼(láng) 猩(xīng)猩 白鹤(hè) 鸽(gē)子 羚(líng)羊
蚯(qiū)蚓(yǐn) 螃(páng)蟹(xiè) 虾(xiā) 蚕(cán)
二.日积月累
狼吞虎咽 龙飞凤舞 鸡鸣狗吠 惊弓之鸟 漏网之鱼 害群之马
胆小如鼠 如虎添翼 如鱼得水
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