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（1）_____Can trees protect the soil?
（2）_____Is the surface of the Earth flat?
（3）_______Are there living things on the Earth?
（4）_______Does air have smell?
（5）_______Does the Earth look like a ball?
（6）______Is there water on the surface of the Earth?
（7）_______Does water exert pressure in all directions?
（8）_______Can trees make the air fresh?
（9）_______Is the climate（气候） of the four seasons the same in different parts of the Earth?
（10）_______ Does water exert an upward push on all objects in the water.
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
