1.鲜为人知:A.新鲜 B.鲜美 C.鲜明 D.少 (____)
2.漫山遍野:A.水满外溢 B.到处都是 C.不受约束 D.广阔 (____)
3.微不足道:A.细小;轻微 B.计量单位 C.精深奥妙 D.衰落 (____)
4.无所不晓:A.天亮时分 B.知道 C.使人知道 (____)
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