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（ ）(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
