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B: Oh, 1．
A: And then......?
B: 2．
A: Did you buy some water?
B: 3． Sam carried the watermelon on the bike.
A: Oh. 4．
B: No, Sam fell off his bike. And I bumped my head! Then 5．
A: Ha Ha......
| A．No, we bought a watermelon. |
| B．He took me and the watermelon to the hospital. |
| C．Sam and I went for a bike ride yesterday. |
| D．And then we were hungry and thirsty. |
| E．Did you fall off your bike? |
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
