This Chinese boy is Li Lei. Li Lei’s
A.born | B.birthday | C.date |
A.sixteen | B.twelve | C.eleven |
A.Li Lei | B.Li Lei is | C.Li Lei’s |
A.an | B.a | C.the |
A.home | B.school | C.family |
A.mother | B.friends | C.teacher |
A.woman | B.man | C.boy |
A.has | B.there is | C.have |
A.a | B.the | C.an |
A.uncle | B.father | C.son |
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