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1．You can join in the programs at the Postal Museum any day _______.
| A．from July 17 to 23 | B．from July 29-30 |
| C．from August 7-20 | D．from August 21 to 27 |
| A．965-0400 | B．654-0930 | C．357-3030 | D．272-0560 |
| A．the Building Museum | B．the Postal Museum |
| C．the Air and Space Museum | D．the Science Museum |
| A．create a stamp | B．build a house |
| C．make a paper airplane | D．explore a future city |
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
