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John: Good morning, Jack! 1．
Jack: I usually go to school by bike. 2． I like walking.
John: Walking is good. Look at the sun. It’s a fine day for walking today.
Jack: 3． And the air is nice and clean today. 4． Do you often go to school by bike?
John: Yes, but not today.
Jack: 5．
John: My bike is broken（坏了）.
| A．But sometimes I go on foot. |
| B．That’s right. |
| C．Why not? |
| D．How do you usually go to school? |
| E．What about you? |
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
