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Lily: 1．
Lucy: I was sad because I was ill, 2．
Li1y: Well, look at this picture. You’re in bed too, 3．
Lucy: I was happy because Andy came to see me and helped me with my maths.
Lily: Oh, 4． What happened?
Lucy: I was worried because I wasn't good at maths. I didn't like maths tests.
Lily: 5．
Lucy: Yes, Look, I got an A. I was so proud.
Lily: Congratulations!
Lucy: Thank you!
| A．Did you do well in the maths test? |
| B．I had to stay in bed. |
| C．You look worried in this picture. |
| D．You look sad in this picture. Why? |
| E．but you Look happy. Why? |
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
