(1)A.thirty B.fifty C.four D.too
(2)A.math B.English C.book D.Chinese
(3)A.blue B.ruler C.green D.purple
(4)A.tall B.sports C.strong D.quiet
(5)A.notebook B.floor C.wall D.door
(6)A.apple B.big C.pear D.orange
(7)A.cake B.car C.bike D.plane
(8)A.crayon B.sharpener C.pen D.picture
(9)A.cat B.peach C.rabbit D.duck
(10)A.friend B.father C.brother D.grandpa
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