( )(1)A.spring B.summer C.fall
( )(2)A.March B.May C.April
( )(3)A.eat breakfast B.eat lunch C.eat dinner
( )(4)A.7:30 B.8:30 C.9:30
( )(5)A.drinking B.eating C.having
( )(6)A.fly kites B.plant trees C.make a snowman
( )(7)A.nice B.sweet C.good
( )(8)A.go hiking B.go shopping C.go fishing
( )(9)A.go to bed B.go to school C.go to work
( )(10)A.first B.second C.third
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