彩虹由红、橙、黄、绿、蓝、靛、紫七种颜色,说明阳光是____
猜猜下面说的是哪种小动物。
Its ears are long. Its eyes are small. Its mouth is small. Its tail is short. What is it?
____
蚯蚓的运动是仅靠刚毛完成的 ( )
在三位数abc中,已知a+b=9,b+c=10,则 abc÷c=____ .
火眼金睛辨对错.
被除数和除数同时增加相同的倍数,商不变.