问题
选择题
I want _____ a policeman because it is an exciting ______. [ ]
A. to be; job
B. doing; work
C. to do; job
D. be; work
答案
答案：A
搜题请搜索小程序“爱下问搜题”
I want _____ a policeman because it is an exciting ______. [ ]
A. to be; job
B. doing; work
C. to do; job
D. be; work
答案：A
某物理实验小组的同学在探究“物体所受重力大小与物体质量的关系”的实验记录如右表：
（1）在实验过程中，需要的测量工具有：______．
（2）根据实验测得的数据可知：物体所受重力G与物体质量m的比值为______N/kg．
（3）分析表中试验数据，得出的结论是：______．
| 实测物体 | 物体质量m/kg | 重力G/N |
| 物体1 | 0.5 | 4.9 |
| 物体2 | 1 | 9.9 |
| 物体3 | 2 | 19.4 |