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It is a nice day. John and Jim go to a nature park. There is a big forest in the park. There is a beautiful lake near the forest and they can see some fishes in the lake. There is a bridge over the river in front of the lake. They take some pictures on the bridge. They want to climb the mountains, but they have no time.
1．Are there any trees in the park?
| A．Yes, there are. | B．No, there aren’t. |
| A．They go fishing. | B．They take some pictures. |
| A．Yes, there is . | B．No, there isn’t. |
| A．Yes, there are. | B．No, there aren’t. |
| A．Yes, they do. | B．No, they don’t. |
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
