Bob, an exchange student from the UK, is at Li Ming’s home in Chengdu. They are talking about the photos on the wall.
B-Bob L-Li Ming
B: What are you picking in the photo?
L: Mulberries. Mulberries like these taste delicious.
B: Oh, really? Are mulberries
L: Yes, there are a lot every May. You know Sichuan has a long history of silk culture. Silk from Chengdu became famous
B: I see. Where did you pick the mulberries?
L: Inside an ecological(生态的)park in Chengdu.
B: Wow! The ecological park
L: You can rent(租)a piece of land and grow crops or vegetables. Some experts will give you help if necessary. This way, you can learn more about
B: That’s a good way to
L: That’s true. It has many
B: Could you
L: No problem.
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