问题
选择题
More than half of the workers in this factory _____ from the south. [ ]
A. are coming
B. is coming
C. have come
D. has come
答案
答案：C
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More than half of the workers in this factory _____ from the south. [ ]
A. are coming
B. is coming
C. have come
D. has come
答案：C
某同学在研究温度不变时压强与体积关系的实验中，测出了几组P和V的值，如下表所示：
| 组别 物理量 | 1 | 2 | 3 | 4 | 5 | 6 |
| P（×104pa） | 14.6 | 5 | 5.8 | 11.5 | 14.3 | 17.0 |
| V（×10-4m3） | 120 | 350 | 300 | 150 | 120 | 100 |
| Pv（pam3） |