问题
选择题
The leaves are _________ the tree.[ ]
A. on
B. in
C. at
答案
答案:A
The leaves are _________ the tree.[ ]
A. on
B. in
C. at
答案:A
小刚在做“观察水的沸腾”实验时,记录数据如下:
时间/min | 0 | 2 | 4 | 6 | 8 | 10 | 12 |
温度/℃ | 90 | 92 | 94 | 96 | 98 | 98 | 98 |
(2)通过分析实验数据,还可得出结论______.
(3)小刚测得水的沸点不是100℃,两种可能的原因:
①______②______.