搜索
Jack：Hi, Mike. How many toy cars do you have?
Mike：I have four.
Jack：How many toy bears do you have，Amy?
Amy：I have seven.
Jack：Hello, John! How many crayons do you have?
John：I have twelve.
Jack：Do you have toy boats，Sally?
Sally：Yes. I have nine.
Jack：I have sixteen books.
⑴
________ A．Amy a.  ⑵  ________ | B．John b.  ⑶  ________ | C．Mike c.  ⑷  ________ | D．Jack d.  ⑸  ________ | E．Sally e.  |
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
