当发现电气起火时,首先应立即切断电源。
参考答案:对
---Do you live in Athens?
---No, we ___ it for the Olympics as well as holidays.
A.just visit
B.have already visited
C.just visited
D.are just visiting
淮海战役中,人民解放军解放的最大城市是[ ]
A.济南
B.郑州
C.徐州
D.开封