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 suit could _______ the wearer. You wouldn’t want your robot leg or arm bending（弯曲）the wrong way.

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

When I was about 12, I had a classmate, a girl who liked to point out my shortcomings（缺点）. Sometimes she said I was lazy. Sometimes she said I wasn’t a good student. Sometimes she said I talked too much. I tried to put up with her as long as I could. At last, I became very angry. I ran to my father with tears in my eyes.

My father listened to me quietly, and then he asked, “Are the things she said true or not? Go and make a list of everything she said and mark the points that are true. Pay no attention to the other things she said.”

I did as he told me. To my surprise, I discovered that about half of the things were true. I brought the list back to my dad. He refused to take it. “That’s just for you,” he said, “When something said about you is true, you’ll find it will be helpful to you. Listen to them all, but hear the truth and do what you think is right.”

Many years have passed. The situation often appears in my mind. In our life we often meet with some trouble and we often go to someone and ask for advice. For some advice you will remember all your life!