搜索
Bob:
Eric: What’s it like?
Bob: There are more and more factories.
Eric:
Bob: It was so nice. Before, there were no cars or factories at all.
Eric: What did you do then?
Bob: There was a small river near our house.
Eric: That was so fun. Will you go fishing this Mid-Autumn Festival?
Bob: No. The river is not clean (清澈的).
Eric: The countryside changed a lot.
Bob: Yes. If we protect the environment (保护环境) now, the countryside will be better.
| A．I’m going to visit my grandparents. |
| B．There is no fish in the river. |
| C．There are many cars, too. |
| D．I went to visit my grandparents. |
| E．How was there before? |
| F．I went fishing with my father. |
| G．I picked apples on the farm. |
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
