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Wu Yifan | 3 | 16 | 5 | 7 |
Sarah | 0 | 12 | 13 | 18 |
Mike | 7 | 17 | 4 | 9 |
Amy | 1 | 11 | 10 | 20 |
1．—How many kites do you have, Wu Yifan?
—I have
2．—How many books do you have, Sarah?
—I have
3．—How many balls do you have, Mike?
—I have
4．—How many toy cars do you have, Amy?
— I have
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
