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| Our club warmly welcomes riders（骑手）aged 12-65. Please arrive 15 minutes early for every ride. To learn more about the rides, please visit ride.director@riverriders.org. | |||
2022 Rides | |||
| Rides | Time | Registration（登记） | Price |
| Ride around the town | 31st July, Sunday | 1st June-11th June | $60 |
| High mountain ride | 14th August, Sunday | 7th June-17th June | $75 |
| Ride to Kitsap | 25th September, Sunday | 18th July-28th July | $40 $20 Child |
| A．8-year-old Jack. | B．10-year-old Nancy. |
| C．35-year-old Mandy. | D．66-year-old David. |
| A．On 7th June. | B．On 17th June. | C．On 5th August. | D．On 14th August. |
| A．$40 | B．$60 | C．$80 | D．$100 |
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
