搜索
Jack is a school boy. He doesn’t like going to school. He always wants to have more holidays. One day he makes a telephone call to his teacher and says in a voice. The voice sounds like his father’s. “I am sorry to say that Jack is ill in bed. He won’t go to school for three or four days.” “Oh,” says the teacher, “I’m sorry to hear that, but I want to know who is speaking.” “My father, sir.” says Jack. The teacher gets very angry.
1．Jack doesn’t like more holidays.2．Jack isn’t ill in bed.
3．The teacher is sorry to hear that Jack’s father is ill.
4．The teacher knows Jack’s father calls him at last.
5．The teacher is very angry with Jack.
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
