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Ed: Hi, Shelley!
Shelley: I can’t find my school bag! It’s got all my books in!
Ed: Oh, no!
Shelley: Umm, I went to the sports center with my friends. After that, we went to buy a drink, and then we went to the park.
Ed:
Shelley: I’m not sure. I was on my way home when I realized I didn’t have it. I went back to the park to look for it.
Ed: Don’t worry! Perhaps a friend saw it and took it home.
Shelley: No, I don’t think so.
Ed: Well, maybe you left it in the shop. Let’s go and ask if it’s there.
Shelley: OK. I hope so!
| A．But I couldn’t find it! |
| B．Sounds interesting. |
| C．Where did you go after school? |
| D．You look upset. |
| E．Did you leave it in the park? |
| F．No one called me. |
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
