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(Rita and Jim come to China. They are in a big library now. )
Rita: Jim, come here. Look! It’s a book about a special festival in China.
Jim: What festival is it?
Rita: Dragon Boat Festival.
Jim:
Rita: It’s usually in June.
Jim: Zongzi? Is it delicious?
Rita: Oh, I don’t know. But there are some pictures. Let’s have a look.
Librarian: Excuse me.
Rita and Jim: Oh, sorry. We’ll keep quiet.
Librarian: Yes. Of course.
Rita and Jim: Anything else?
Librarian: Yes.
Rita and Jim: OK, we will. Thanks.
| A．keep your desk clean. |
| B．Can we read books here? |
| C．When is the festival? |
| D．People can eat zongzi on that day. |
| E．Please talk quietly in the library. |
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
