Every day, the sun rises up and goes down. Then the moon rises up and goes down. We can see the sun, the moon and the stars every day, and all of them are in the universe(宇宙). The sun is much bigger than the earth and the earth is much bigger than the moon. But sometimes we may feel that they are in the same size. It’s because the sun is far away from us, and the moon is our nearest neighbor.
At night, when you look up into the sky, you will see the moon. There is no water or air on it and nobody can live there. You may find the moon is bigger than the stars. But actually, some of the stars are even bigger than the sun.
1.The earth is smaller than the sun.2.The sun and the moon look in the same size because the sun is far and the moon is near.
3.The moon is much bigger than the sun.
4.There is no water or air on the moon and nobody can live there.
5.The sun is the biggest star in the universe.

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

