Rescue robots (1)____ hi-tech toys, but we are now using more robotic planes, helicopters. We can use them after storms, earthquakes, or fires to provide us with important (2)____ . they have cameras and microphones that help res workers understand how much damage(3) __ and (4)__ where the victims are. these planeswork(5) ___ between 30 and 120 metres in the air and they can rescue people in houses or somewhere very dangerous. GIÚP MIK NHA, THANKS, AI NHANH MIK TICK CHO![]()
1. is
2. problem
3. on what
4. ( ko điền gì cả )
5. about