按照北京的老规矩,春节差不多从腊月初旬开始,一直到正(zhēng zhèng)月的十九才结束,这期间的除夕夜分(fēn fèn)外热闹,家家户户都灯火通宵,不许间(jiān jiàn)断,鞭炮声日夜不绝,初一我们到西城外的白云观(guàn guān)玩了一天,心情特别高兴。
仆役(pú pū) 奄奄一息( yǎn yān)
挑剔(tī tì) 搅和( he huo)
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