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（_____）(1) Why do you always get up so early?
A．Let me think. Oh, I give them seats on the bus.
（_____） (2) Do you always help others?
B．Why? My office is very far from my home.
（_____） (3) How do you help old people?
C．It’s eleven now. They’ll meet in an hour.
（_____） (4) Why should I call the police?
D．Not really. I should help others more.
（_____） (5) When will they meet at the airport?
E．Use your mind! Only the police can help you!
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
