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There are many things on Peter’s desk. Look! A green pencil. It’s one yuan. The blue basketball is forty yuan. The black pen is twenty yuan. The ten crayons are fifteen yuan. The white ruler is three yuan. The story book is seven yuan. Where is his schoolbag? Oh, it’s under the desk. It’s sixty-eight yuan.
1．This is _______ desk. ( )| A．Linda’s | B．Peter’s | C．Mary’s |
| A．green | B．white | C．blue |
| A．twenty | B．ten | C．fifteen |
| A．seven | B．three | C．fifteen |
| A．on the desk | B．in the desk | C．under the desk |
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
