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（1）A. Sunday B. Monday C. Saturday
（2）A. listen B. lesson C. learn
（3）A. headache B backache C. toothache
（4）A Social B.Social Science C. Computer Studies
（5）A. Chinese B. Japanese C. Australian
（6）A. exercise B. every day C. everybody
（7）A. dragonfly B. butterfly C. firefly
（8）A.have breakfast B. have lunch C. have dinner
（9）A. 10:10 B. 9:50 C. 10:50
（10）A、dance beautifully B. speak loudly C. sit quietly
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
