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Sam:
Mary: Thank you!
Sam: Wow! Your schoolbag is very heavy.
Mary: An English book, a maths book and ten storybooks.
Sam: Ten?
Mary: Yes. They’re my friend’s books.
Sam:
Mary: Can you guess?
Sam: I know. She’s Amy.
Mary: No, she’s tall. She has short hair and big eyes.
Sam: I don’t know.
Mary: Sandy White, our English teacher.
Sam: Ah!
| A．What’s his name? |
| B．What’s her name? |
| C．Who’s your friend? |
| D．Let me help you. |
| E．She’s friendly and her English is very good. |
| F．What’s in it? |
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
