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B: Hello, Lanlan. No, I'm sad.
A: 2．
B: No, I didn't.
A: You helped your grandpa on the farm yesterday. 3．
B: Yes, but I was happy. I helped him do many things.
A: 4．
B: Because there was a basketball game. My class won. But my monitor(班长)hurt his feet.
A: 5． Is he feeling better now?
B: Yes, he is. We hope he will be well soon.
| A．Did you feel tired? |
| B．Why are you feeling sad? |
| C．Jim, what's the matter? |
| D．I'm sorry to hear that. |
| E．Did you fail the exam? |
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
