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Mr Black is a very old man. In the evening he likes walking outside. And he goes to bed at nine o’ clock.
But tonight, a car stops at his house. A policeman helps him get out. He tells Mr Black’s wife, “The old man can’t find his way on the street. He asks me to take him home by car.”
Later, the policeman leaves. Mrs Black asks, “Dear, you go to the street every evening. But today you can’t find the way. What’s the matter?”
The old man smiles and says, “I can’t find my way? I don’t want to walk home today.”
1．Mrs Black usually walks outside in the evening.2．Mr Black goes to bed at nine o’clock at night.
3．Tonight a policeman takes Mr Black back home by car.
4．Mr Black can’t find the way, so he asks the policeman for help.
5．Mr Black doesn’t want to go home on foot tonight.
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
