搜索
Bert: Hi, Carl! 1． was your April Fool's Day?
Carl: It was terrible. One of my friends 2． me to a costume party.
Bert: That sounds good. Why do you say it was terrible?
Carl: Well, after I received the invitation, I went to the party on time. But by the time I got there, I realized I had been fooled because I was the only one that was 3． a costume.
Bert: Oh, I see. That was really terrible. I was so tired on April Fool's Day
Carl: What was wrong with you?
Bert: My friends told me that we were going to have a math test the next day. I studied the 4． night and was tired out.
Carl: What happened next?
Bert: Then the next day I found they had fooled me. We didn't have a test.
Carl: Haha! We 5． had a real April Fool's Day!
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
