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（ ）(1)A. warm B. winter C. skate
（ ）(2)A. black B. duck C. flower
（ ）(3)A. jump B. boating C. river
（ ）(4)A. hot B. tree C. picture
（ ）(5)A. milk B. juice C. hot dog
（ ）(6)A. dinner B. PE C. timetable
（ ）(7)A. Friday B. hill C. school
（ ）(8)A. watch B. lunch C. match
（ ）(9)A. fly B. five C. fine
（ ）(10)A. basketball B. playground C. difficult
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
