What will the future world be like? Many people are glad to give their ______ ．Here are two imaginations about the world of __． When people talk about the future, we like to think that we'll have our own personal flying car. We would fly at 480 kilometres per hour, avoiding traffic lights，___ roads and speeding tickets．___，some people point to the disadvantages of flying cars. One big problem is: what will happen if the flying cars   _____ ? Then there will be problems with traffic control. Also, if____ become popular, there will surely be too much air traffic．__ it seems that flying cars will face more than a few problems if they are to get off the ground! .Imagine you have your own Ironman____ . Several companies are trying to build a practical robot "exoskeleton". This is a suit of robot arms and legs which follows your   movement. It will____ the wearer to lift heavy objects, walk a long way and even punch through walls! It is____ in many ways, especially for people with disabilities. This suit might help people to walk again after____ or injury（受伤）.But the disadvantage at the moment is the____ . Even a simple suit can cost hundreds of thousands of pounds. Another problem is battery life. A suit like this needs a lot of____ and batteries only last about 15 minutes at the moment. One other problem is that a badly programmed robot wearer. You wouldn't want your robot leg or arm bending（弯曲） suit could ____ the   wrong way. car above our heads,

So in the future，___ we might be able to fly to work and lift a there are plenty of problems to solve before this will be possible.