Our science teacher always enjoys giving out challenging assignments to our Grade 10 science class. Unlike other teachers who hand out page upon page of textbook questions, Mr. Hussey seems to prefer having the students learn science through a more hands- on, do- it- yourself approach.
"Today," said Mr. Hussey, "everyone will be making an icebox!" As we sat in awe, trying to imagine what kind of device he was referring to, Mr. Hussey handed out the project instructions. In groups of two, we would design a storage (贮藏) device that was capable of keeping its contents at a constant temperature for a certain period of time, regardless of the outside temperature. The competition was quite straightforward: every contestant would receive a cube (立方体) of ice. The team that had the biggest piece left the next day would win!
As always, I partnered with my best friend, Vlad. That afternoon we went straight to the library. After an intense discussion, we agreed on the basic idea of having the ice cube inside a box, which would be put inside another bigger box. Between the two boxes would be the heat insulator(绝缘体).
The first test of the icebox was extremely disappointing. Since this was our first experiment, we both wanted good results to build our confidence. Before I went to bed that night, I carefully picked out a huge block of ice from our refrigerator and placed it inside the icebox. When I woke up the next morning and looked into the icebox, there wasn't even a bit of ice left. Reflecting on this failure, we were determined to find a better insulating material. Then we tried the same experiment again. This time, we made it. There was 70 percent of the ice left.
注意：
1.续写词数应为 150左右；
2.请按如下格式在答题卡的相应位置作答。
The day of the competition came very fast.
……
The next day, everybody rushed towards these works of art.
微信扫码预览、分享更方便
