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There are many students in our class. Twenty students live near the school and they come to school on foot. I go to school by bike. Ten students come to school by bus. The buses are always crowed every day. Seven students come to school by car. Their parents drive them to school. Five students take the metro to school. The metro station is five minutes away from the school, so they have to walk for a while.
| How many (students) | How |
| 1. | 2. |
| One | By bike |
| Ten | 3. |
| 4. | By car |
| Five | 5. |
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
