Jason:
David: No, I didn’t. What was it about?
Jason: It was about animals. There are only some left now. I feel sorry for them.
David: Why don’t we make some posters about these animals? We can put them on the notice boards in our school.
Jason:
David: How many South China tigers now in China?
Jason: I have no idea. We should do some researches (调查) first.
David:
Jason: OK.
David: Yes, I’d like to.
A.That’s a good idea. |
B.We can surf the Internet for it. |
C.I really want to help them. |
D.Would you like to come to my home? |
E.Did you watch the Help-Needed programme? |
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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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