四、方框选词。

（亮点原创）Robot dogs play an important role in many areas. During the 19th Asian Games in Hangzhou in 2023, robot dogs helped find and return thrown discuses（铁饼）. They can move as 1 as a person jogging. Without the robots, people would have needed to cover over 7,000 metres in a single competition. Robot dogs can also be “lifesavers”. Some robot dogs can also “see” clearly 2 smoke when there's a fire thanks to their special cameras.
Chinese soldiers are now welcoming some new “teammates”—robot dogs. These China-made robots recently showed their 3 skills at the China-Cambodia “Golden Dragon 2024” joint exercise（联合演习）in May. During the joint exercise, Chinese team members were able 4 a robot dog called Go2 remotely（远程地）. It quickly checked for obstacles（障碍）like fences and old tyres（轮胎）. “With cameras on its head, Go2 can send live videos back to headquarters（指挥部）,” Yang Shengzhi, a Chinese member who 5 the joint exercise, told CCTV.
Go2 is also very small, 6 only 15 kilograms. It can do things like jumping, moving backwards（向后）and even lying down—just like a real dog. It can work for two to four hours at a time before it needs a “rest”.
A heavier robot dog, B1, can not only check areas but also attack. It carries a gun on its back and can shoot when 7 to. It can carry things as heavy as 80 kilograms on its back.
“It's our new teammate,” another exercise member, Chen Wei, told CCTV. The robot dogs can help soldiers in 8 tasks, such as going through rainforests or other unclear environments, said *The EurAsian Times*. Their help can also stop more soldiers from getting hurt.
Apart from 9 best “robot friends”, the drills also showed many other types of smart equipment, such as drones. Instead of 10 in a war, these smart machines are used to solve common threats（威胁）like terrorism and natural disasters, said CCTV.