D

    When I was a child，I often dreamed of the time when I could leave home and go to the city．We lived on a farm，and especially in winter，we were quite out off from the outside world．As soon as I left school，I packed my bags and moved to the city．However，I soon discovered that my life has its disadvantages，too．

    One big disadvantage is money．It costs so much to go out，not to mention basics like food and housing．Another disadvantage is pollution．①空气是如此的脏以至于我害怕出去。 Then there is the problem of traveling round．Although I have a car, I seldom use it because of the traffic jams．One choice is to go by bike，but that can be dangerous

    Of course there are advantages．First，there is so much to do in the city．And there are wonderful jobs and more chances of moving to a more important job or position．Finally，if you like shopping，the kind of goods is very surprising．②What's more，there are many shops that are not far from your home．

    Is life better in the city then? Perhaps it is，when you are in your teens or twenties．However，as you get older，and especially if you have small children，the peace of the countryside may be a better choice．I certainly hope to move back there soon．

    Do you like walking? Walking is a good activity and {#blank#}1{#/blank#}.

    You can start with short walks around your house if it's safe (安全的) enough to do that. So you can try walking from your house to your nearby friends' houses. And if your school isn't too far from your home, {#blank#}2{#/blank#}.

    When you are hiking(徒步旅行) in the mountains, forests, or other beautiful places, {#blank#}3{#/blank#}.

    It's a good way to run away from them and you will be happier. Also, {#blank#}4{#/blank#}. What's more, you can also do all kinds of things, like having a picnic, singing songs or taking pictures. And I think {#blank#}5{#/blank#}.

    I recently gave up driving. I passed my test last year, but I stopped voluntarily when I turned 90, I thought that it was finally the right time. Needless to say, my family was relieved--they didn't have to have "that talk" with me. My doctor was relieved too. Compared to a serious illness, taking away a senior driving license is one of the hardest things to do. Since my wife passed away years ago, I made this decision alone, although I'm sure my wife would have supported me. I knew I couldn't move as well as I used to, and my eyesight was getting worse. It hurt to turn my head when backing up the car, and, after long shopping trips, I was always tired.

    As I handed over the keys of the car to my son, I thought of all the cars my wife and I had owned over the years. A car is freedom, independence, and an extension of your personality. Without one, you feel like less of a person.

    I have a son who lives close by and we shop together at least once a week. My neighbors also offer me rides, but the idea of being dependent on other people after a lifetime of independent is hard to get used to.

    I have learned to adapt and change. With my own car, I could go anywhere at a moment's notice. But now, my life is different and I must plan ahead for everything. No more going out for mill or bread or last minute afternoon drives. However, I found a solution to some of those problems. Last month, I decided to buy a nice new four-wheel electric motorbike. At the top speed of 12km/h, it takes 20 minutes to get from my house to the store. But now, my ride is free from traffic and noise, with trees and greenery replacing cars and street signs.

    Giving up driving is hard, and some of us never accept the loss. For me, however, it was just the end result of a long and lucky life. Life in the slow lane turned out to be so much fun-and so much cheaper.

{#blank#}1{#/blank#}Sam wants to have fun playing in the water and he likes playing beach volleyball.

{#blank#}2{#/blank#}Jim likes watching dolphin shows and he also wants to ride on the roller coaster.

{#blank#}3{#/blank#}Kate would like to go to a theme park. Micky Mouse is her favorite.

{#blank#}4{#/blank#}William decides to visit a museum，he wants to see an IMAX film there.

{#blank#}5{#/blank#}Nancy is a nature lover. She prefers to watch wild animals.

    Don't be surprised if you see a car going down the road without a driver in Beijing these days. In March, 2018, Baidu was given a license to test its self-driving cars in Beijing, China Daily reported.

    Self-driving cars have been in development since 2010, when Google announced that it was making such cars. Since then, companies like Tesla, Uber and Baidu have been working to produce and test their own self-driving cars.

    Self-driving cars are expected to change the way we get around. They are safer and more environmentally friendly than regular cars. They can remove the stress(压力) of driving and allow disabled or blind people to get around more easily.

    But self-driving cars have their own disadvantages as well. In one test, researchers pointed a laser pointer (激光棒) at the car's sensors (感应器) while it was moving. The car mistakenly thought that the laser beam (波束) was in its way and slowed down or changed directions.

    The software (软件) that is used to direct the cars may not be safe enough. Reported Live science. Sometimes, without any reasons, it may break down when we use out computers or smart phones. If the software in a self-driving car happened to crash, the results could be deadly. Maybe improvements to the software could solve this problem.

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