问题
选择题
—I called you last night, but you didn’t answer it.
—I’m terribly sorry. I ______ a meeting at that time.[ ]
A. had
B. was having
C. am having
答案
答案:B
—I called you last night, but you didn’t answer it.
—I’m terribly sorry. I ______ a meeting at that time.[ ]
A. had
B. was having
C. am having
答案:B
探究影响物质吸热多少的因素的实验时,得到如下的数据表:
物质 | 实验 次数 | 质量/kg | 升高的 温度/℃ | 吸收的 热量/J |
水 | 1 | 0.05 | 10 | 2100 |
2 | 0.10 | 10 | 4200 | |
3 | ______ | ______ | ______ | |
煤油 | 4 | 0.05 | 10 | 1050 |
5 | 0.10 | 10 | 2100 |
(2)分析第1、4或2、5次实验数据,可得出的结论是:______.
(3)为了研究物质吸热多少与升高温度的关系,请设计一组数据,填入表中空格内.
(4)综上所述,物质吸热多少与______、______、______有关.