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Andy: Really?
Tom: OK!
Andy: Wow! It’s a frog (青蛙)! I like it.
Tom: Thank you! My schoolbag is green.
Andy: It’s orange. It’s very heavy.
Tom: What’s in it?
Andy: Look! I have many books and pens.
Tom:
Andy: One, two, three, four, five, … Sorry, too many.
| A．Can I see it? |
| B．What colour is your schoolbag? |
| C．I have a new schoolbag. |
| D．How many books do you have? |
| E．Here you are. |
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
