A: What are you doing, Mike?
B:
A: Why are you doing that?
B:
A:
B: It’s on 22nd April.
A:
B: Of course. And it’s very important.
A: Oh, the poster is ready. Where can we put it?
B:
A: Good idea!
B: Miss Green. She was the only teacher of English in our school, you know.
A.How about putting it at the school gate? |
B.I’m reading a book about Earth Day. |
C.When’s Earth Day then? |
D.I’m making a poster. |
E.Because Earth day is coming. |
F.Is it popular in China? |
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同类型试题
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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
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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
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