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A: Hi, Alex. How are you doing today?
B: As busy as a bee.
A: A project?
B: Yes. It’s my English homework.
A: Sounds interesting.
B: It is about my great hometown. We are going to make an introduction to Henan. We hope people will get to know more about my hometown.
A: How special your homework is!
B: But I don’t know how to make it more creative.
A: No problem. Please tell me what you are going to talk about in your project.
B: Hmm, let me see ...
A: Great! Why not go to our school library to find more information?
B: Good idea.
A: Sure, I’d love to. Let’s go.
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
