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A: Look at the first (第一幅) picture. Who are they in it?
B: They are Sam and h
A: What are they doing (在做什么) ?
B: They are having p
A: Oh, then what season is it now?
B: It’s autumn. It’s fine and c
A: Look! Who are in the second (第二幅) picture?
B: T
A: Are they also having picnics?
B: N
A: Oh, yes. It’s the best time (最好的时节) to go c
B: Do you l
A: Yes, I like summer too.
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
