1.空姐面带微笑地问(____)先生(____)我能为您做点儿什么(____)
2.空姐很有礼貌地说(____)先生(____)为了您的安全(____)请稍等片刻(____)等飞机升空平稳飞行后(____)我立刻把水给您送过来(____)好吗(____)
3.空姐小心翼翼地把水送到那位乘客跟前(____)面带微笑地说(____)先生(____)实在对不起(____)
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