问题
选择题
| _____ many failures, I have the courage to meet all challenges. |
| A. Having experienced B. To experience C. Experienced D. Experience |
答案
答案：A
搜题请搜索小程序“爱下问搜题”
| _____ many failures, I have the courage to meet all challenges. |
| A. Having experienced B. To experience C. Experienced D. Experience |
答案：A
做“观察水的沸腾”的实验时，在使用温度计以前，应该观察它的______；认清它的______．
实验中，记录的数据如表：
| 时间（分） | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | … |
| 温度（℃） | 92 | 94 | 96 | 97 | 98 | 98 | 98 | 98 | … |