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Sarah: Hello, Chen Jie!
Chen Jie: Hello, Sarah!
Sarah:
Chen Jie: I’m doing my homework. What about you?
Sarah:
Chen Jie: Season? That’s interesting!
Sarah: Spring. Because we can see many flowers.
Chen Jie: What do you usually do in spring?
Sarah:
Chen Jie: Let’s fly kites this afternoon!
Sarah: Good idea!
| A．I’m reading a book. |
| B．I usually go on a picnic. |
| C．This is Sarah. |
| D．What’s your favorite season? |
| E．What are you doing? |
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
