Correct: Travel - Straight Line, Reflection, Refraction, Type of Energy, Lens, Medium, Absorb, Bounces Back, Can Bend, Incorrect:  Travel - Curved Line,  Type of Matter,  Total Darkness,  Has mass, Measured with a balance , Measured with a thermometer, Cannot pass through object,

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?