搜索
A
Lost&Found (失物招领)
—
—What colour is it?
—It’s red and yellow.
—
—Three pencils and an eraser.
—
—Thank you so much.
B
—I have a good friend.
—Really?
—A boy.
—
—No. He is tall and strong.
—
—His name is Tom.
—Oh. he is my friend, too
| A．Here it is. |
| B．What’s in it? |
| C．Excuse me. |
| D．What’s his name? |
| E．A boy or girl? |
| F．Is he Jack? |
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
