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It’s half past seven in the morning. Dick is still asleep. Mum wakes him up: “Dick, it’s seven. Get up right now.” Dick puts on his clothes and then comes into the living room. Mum says: “Dick, here’s your breakfast.” Dick answers: “Bread and eggs again! I don’t like bread. And I don’t want any breast. May I have an egg, please? Bye, Mum. I’m going to school.” Dick runs to school. But there are no teachers or students in the school. “How silly I am! It’s Saturday today.”
1．It’s2．Dick
3．Dick
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
