mèn jiàn yǜ
1、 A. 纳闷 B. 关键 C.鹬蚌相争 (________)
B.èn pō jīn
2.A. 笨蛋 B. 剖开 C.筋疲力尽 (________)
fèi jī fù
3.A. 浪费 B. 充饥 C. 郑人买履 (________)
fó fēnɡ qián
4.A. 仿佛 B. 疯长 C. 黔驴技穷 (________)
rùn yà hǎo
5.A. 红润 B. 揠苗助长 C. 叶公好龙 (________)
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