1) Light passes easily through matter? a) Transparent b) Opeaque c) Semi transparent 2) Color spectrum? a) 9 b) 10 c) 7 3) Magnetic has ...... Poles? a) 4 b) 2 c) 3 4) Red and blue give color? a) Yellow b) Red c) Crimson

science

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?