(1)莱斯(lái lài )小姐叫全班同学介绍一下各自的国家。
(2)怎么回事?是不是被什么噎(yē yé )住了?
(3)对于学习成绩不够突出的同学,也不要歧视。(zhī qí)
(4)面对亲赴灾区指挥抗震救灾的温家宝总理,汶川的乡亲们感动得热泪盈眶。(kuāng kuàng)
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