1) What do we call an object that gives off its own light? a) A reflector b) A shadow c) A light source 2) What do we see when something blocks light? a) A rainbow b) A shadow c) A mirror 3) What happens to the sky when the Sun goes down? a) It becomes dark b) It gets brighter c) It rains 4) Why does the Sun look like it moves in the sky? a) Because the clouds move b) Because the Earth spins c) Because the Sun moves

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?