如图甲所示，是李辉“探究物质熔化规律”的实验装置，图乙是依据实验数据描绘出的该物质温度随时间变化的图象．

（1）实验中使用的温度计是根据 ____的原理制成的；

（2）由图乙可知，该物质是 ____（选填“晶体”或“非晶体”；

（3）该物质在BC段处于 ____（选填“固体”、“液体”或“固液共存”）状态．此过程中吸收热量，温度不变，内能 ____

①游戏厅   ②公园   ③影剧院   ④贸易集市

阅读理解

    Tom,Bill and Dave lost their backpacks．They are at the lost and found office．The backpacks are the same(相同的),but the things in them are different．Can you help them find the right(正确的)backpack?

    Tom：I have a  maths book and a pencil case in my backpack．There are three pencils,a pen and an eraser in the pencil case．

    Bill：I have a Chinese dictionary,a maths book and two notebooks in my backpack．

    Dave：There are two CDs,three picture books in my backpack．My English book is also in it．

影响生物生活的因素有两类：____因素和____因素，前者如____、____、____、____、后者包括____、____、____．