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Mike: I’m going to visit my grandpa.
John: How is there now?
Mike:
John:
Mike: It wasn't so nice. There were only some houses, and there were no cars at all.
John:
Mike: I often swam in a river.
John: Will you go swimming this weekend?
Mike:
John: I hope it will be cleaner in a few years.
Mike: I hope so!
| A．No, I won’t. |
| B．He lives in a village. |
| C．What did you often do then? |
| D．How was there before? |
| E．There are a lot of tall buildings. |
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
