题目

看图片，回答问题。1. Where is the pen? ______________________________________2. Where is the ball? ______________________________________ 3. Is the ball on the chair? ______________________________________ 答案：【答案】1. It's on the desk. 2. It's under the box. 3. Yes, it is. 【解析】略铜的比热是0.39×103J/（kg?℃），表示的意思是______；已知水、沙子质量相等，水的比热较大，若将它们升高相同温度，______吸收的热量多；如果放出相同的热量，______降低的温度多．