A.临危不惧 彬彬有礼 焦躁不安 心急如焚 (描写心理) |
B.囊萤夜读 铁杵成针 悬梁刺股 手不释卷 (读书求学) |
C.唇红齿白 眉清目秀 骨瘦如柴 虎头虎脑 (描写外貌) |
D.坚贞不屈 临危不惧 舍己为人 尽职尽责 (人物品质) |
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