问题
选择题
─Where can I find Jack?
─He _____ the post office. [ ]
A. has been to
B. had been to
C. has gone to
D. had gone to
答案
答案：C
搜题请搜索小程序“爱下问搜题”
─Where can I find Jack?
─He _____ the post office. [ ]
A. has been to
B. had been to
C. has gone to
D. had gone to
答案：C
下表是李明在做“研究液体的压强”实验时得到的数据．
| 序号 | 液体 | 深度/cm | 橡皮膜方向 | 压强计 | ||
| 左液面/mm | 右液面/mm | 液面高度差/mm | ||||
| 1 | 水 | 3 | 朝上 | 186 | 214 | 28 |
| 2 | 3 | 朝下 | 186 | 214 | 28 | |
| 3 | 3 | 朝侧面 | 186 | 214 | 28 | |
| 4 | 6 | 173 | 227 | 54 | ||
| 5 | 9 | 160 | 240 | 80 | ||
| 6 | 盐水 | 9 | 157 | 243 | 86 | |