题型:判断题 看图选择正确的对话内容。( ) 1. A. How many birds can you see? I can see eight.( ) 2. B. How many elephants can you see? Three.( ) 3. C. I have a new skirt. It's beautiful! 查看答案
题型:判断题 质量是10kg的冰,全部化成水后,水的质量是______kg,体积是______m3,其密度将比冰要______;当这些水又全部汽化成水蒸气后,其质量是______kg,体积将变得更大,其密度将______.这说明质量不随物质______的改变而改变,但密度将可能发生变化. 查看答案