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The world's first underground railway
London Underground was
In 2004-2005, London Underground trains ran a
| A．from | B．formed | C．forming | D．forms |
| A．it's | B．it | C．its | D．its' |
| A．what | B．where | C．when | D．who |
| A．world | B．worlds' | C．worlds | D．world's |
| A．the | B．that | C．a | D．an |
| A．with | B．Of | C．by | D．in |
| A．week | B．day | C．month | D．season |
| A．of | B．by | C．with | D．in |
| A．sum | B．group | C．total | D．team |
| A．millions | B．thousand | C．million | D．Thousands |
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
