实验室里备有天平（含砝码）、刻度尺、量筒、空瓶、烧杯、水和细线，请你设计两种测定一个正方体小金属块的密度的方法（不需写方法），然后按方法要求从上面的器材中选择适当的器材填在对应的方法中。
方法一： 。方法二： 。
分析：首先根据器材和实验目的确定出实验的基本思路．依据公式ρ=
，质量可以通过天平测出．在提供的其它器材中，量筒和刻度尺都是测量体积的工具，我们可以从这两方面进行考虑．
解答：解：分析可知，小金属块的质量用天平测得，测量体积所以我们可以考虑以下两种方案：一是用刻度尺测量出它的体积；二是使用量筒、水、细线，采用排水法来进行测量．
故答案为：方法一：天平、刻度尺。方法二：天平、量筒、水、烧杯 、细线
点评：在有天平的情况下，测固体密度的难点在于如何测出它的体积，规则的物体可以用刻度尺量，不规则的则可以借助量筒和水来量出．
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| A group of graduates, highly established in their careers, got together to visit their old university professor. They talked about the present-day 1 topic-Happiness. But the conversation soon turned into complaints about 2 in work and in life. To offer his guests coffee, the professor went to the kitchen and 3 with a large pot of coffee and different types of 4 -plastic, glass, crystal, some nice-looking, some plain-looking, some expensive, some cheap-telling them to help 5 to the coffee. 6 all the students had a cup of coffee in hand, the professor said, "If you 7 , you might find all the nice-looking, expensive cups are taken up, with the plain and cheap ones 8 . While it is 9 for you to want only the best for yourselves, that is the source of your 10 and stress. In fact, the cup itself adds no 11 to the coffee. What all of you 12 wanted was coffee, not the cup, but you consciously went for the best cups and were 13 each other's cups." "Now 14 this: Life is the coffee and the jobs, money and position in 15 are the cups. They are just tools to 16 and contain life, and the types of cups do not decide or 17 the quality of life we live. Sometimes, focusing on the cup makes us 18 to enjoy the coffee itself. So, don't let the cups drive you. Enjoy the coffee 19 ." The 20 people don't have the best of everything. They just make the best of everything. | ||||
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