If you look at the top of your phone，you'll usually see a little symbol that says 3G or4G． The"G"stands for the"generation"of your mobile network．But these symbols will become things of the past after 5G fully arrives．

On March 30th，2019，Shanghai vice﹣mayor Wu Qing made the first 5G video call on a Huawei Mate X smartphone，CGTN reported．Shanghai has also become the first city in China to start testing 5G networks．

Now，4G takes about 100 to 200 milliseconds（毫秒）to send and receive data（数据）．But 5G will get it down to 1 millisecond or less．This big change will not only make our mobile Internet faster．It can be used in many other ways as well．

For example，5G will help to make self﹣driving cars safer．Today's self﹣driving test cars have one problem﹣lag．When the car"sees"an obstacle（障碍物），it sends this information to a data center and receives instructions．However，it takes time to send and receive this information．With this kind of lag，the cars might crash（撞击）because they don't receive instructions in time．With 5G，this lag will be greatly lowered，making the cars safer，according to CNN．

5G could also be used to power the Internet of Things（IOT）．This refers to a large online network that connects all things and people．Fast Internet speeds will be the key to developing this technology．For example，with IOT under 5G，your refrigerator could automatically（自动地）place an order online for eggs when it finds that there are no eggs left inside．

All in all，5G will shape every type of technology that it touches．And you won't have to wait too long for that to happen．

SIGHTSEEING

Discover the sights of Salt Lake City on one of our open﹣air buses！You can get on and off our buses at any stop，giving you the chance to see the sights at your own pace（节奏）．

Tickets

Adult：﹩33

Student：﹩29  

Child（6﹣12）：﹩17

*Children under 6 are free

Don't Forget！

Don't burden（使负担）yourself with too much to carry．However，a few things will make your tour more comfortable．We suggest：

Sunglasses Hat Camera Bottled Water Snacks

DON'T FORGET TO HUG YOUR DRIVER！

Check us out at facebook．com/USBusUtah．

Prepare for Water Day Zero

Last year，Cape Town said it was facing Water Day Zero．That was the date when the city's taps would go dry．It was first expected to arrive in April，2018． Thanks to hard efforts and a rainy season，it has been put off（推迟）．【小题1】．And it may hit cities all over the world．

How did Cape Town get into a Water Day Zero situation？The city gets its water from six reservoirs（水库）．They usually fill up during the rainy season，from May through August．However，since 2015，the city had been suffering from its worst drought（旱灾）in a century．【小题2】．Even worse，Cape Town's population grew greatly．As a result，the need for water rose．

【小题3】Because of climate change，serious droughts are becoming more and more common．At the same time，people are moving to cities．The United Nations says by 2050，two thirds of the world's population will live in cities．Since 2014，southeastern Brazil has been suffering from its worst water shortage in 80 years．In Mexico City，many of the 21 million people only have running water for half of the day．

Luckily，steps can be taken to avoid water crises（危机）．To start with，all of us can do something to save water and slow down climate change．【小题4】At the same time，water pollution must be stopped．

The world now has a chance to stop a series of Water Day Zero crises． If we don't act，many cities may soon face a time when there isn't a drop to drink．

Review of Teahouse

By Li Daming

This year's school play，Teahouse，was a very good choice．It was easy for us to learn about 【小题1】lives in China about one hundred years ago and see the changes in Chinese society．

Teahouse was【小题2】by Lao She in 1957．It tells a story that takes place in a teahouse in Beijing．The story starts at the end of the nineteenth century and 【小题3】over 50 years later．The play has three acts and shows the lives of common people in China at that time．

The actors' and actresses' clothes and the teahouse 【小题4】were right for the first half of the twentieth century．The actors and actresses all did a very good job．Li Nan，the student playing Wang Lifa，was the 【小题5】．He brought Wang Lifa to life from a young man to an old man．

At the end of the play，the actors and actresses all came out for a curtain call（谢幕）and the whole theatre 【小题6】for them．Seeing Teahouse on the stage was wonderful！

Photographing a Black Hole

The whole world felt excited on the night of April 10th，2019．For the first time in history，people saw an image（图象）of a black hole．The picture became 【小题1】at once．But attention soon turned to a computer scientist，Katie Bouman．Without 【小题2】efforts，the historic image wouldn't have been possible．

Black holes are very far away．It【小题3】easy to photograph one．It's like taking a photo of an orange that is on the moon．Many scientists had tried．However，none of them【小题4】．

These failures didn't stop Bouman from trying．Three years ago，the scientist started working on a special computer programme．Over the years，she has improved the 【小题5】many times．Finally，it turned telescope（望远镜）data into the black hole image．

Bouman has received lots of praise for her work．The young woman，however，is modest（谦虚的）．She says the efforts of her colleagues（同事）were important，too．"None of us could do it 【小题6】，"she told reporters．

Do you want to make history as Bouman did？Set yourself a goal and work towards it．One day，you will make the impossible possible，too．

Kids love to run here，there and everywhere．But as we age，we seem to lose the enjoyment of running．This form of exercise，though，offers great benefits（好处）to everyone．It helps with weight control，and it slows down the effects of aging．It helps us relax and increase confidence．Running keeps the heart healthy and muscles and bones strong．It reduces the risk of heart diseases．In addition to health，running has other benefits．You can run almost anywhere： You don't need a gym membership or expensive equipment（器械）．For that reason and others， running is a favourite form of exercise for many people．

If you want to run，how can you get started？It is not wise to start exercising when you are not feeling well．If you haven't exercised in awhile，you should check with your doctor．He or she will let you know if you're healthy enough to try running．If your doctor says OK，you're ready to go！ What's next？ Choose a good pair of running shoes．They don't need to be expensive；they just need to give your feet good support（支撑）．

Find a running partner．On days when you don't feel like exercising，he or she can help encourage you．If you can't find anyone who enjoys running，take your dog along．It is always ready to go outside，and the exercise makes it healthier，too．

　  　Be careful with the traffic and run facing the cars coming towards you．Don't wear headphones while running outside．They stop you from hearing cars，stray dogs（流浪狗），etc．Wear bright clothing in order to be seen easily．

If you're ready to start，why not take part in the next"Let's Run"？The event is to raise money for the children and parents in need．It's a great way to experience the pleasure of running while giving a helping hand to the poor．

Thanks for your message．Yes，I'm having a great time on my student exchange（交流）programme in France．I was a bit______before I arrived here，but there was no need to be．My host family is really nice．

They try to make me______at home．The grandmother knows that I miss Chinese food a lot．So she actually learned how to______Chinese food！She also has a teenage granddaughter about my age who is really______．She always talks to me in French to help me practise．You wouldn't______how quickly my French has improved．______I still make lots of mistakes，it doesn't worry me as it used to．

My biggest______is learning how to act at the dinner table．As you can imagine，things are very different from the way they are at home．For example，you shouldn't put your elbows（胳膊肘）on the table．______，I thought that was pretty strange，but now I'm used to（习惯于）it．Another example is that you shouldn't eat anything with your______except bread，not even fruit．You have to cut it up and eat it with a fork．Another thing is that it's impolite to say you're full．If you don't want any more _______，you should just say，"That was delicious．"I have to say that I find it difficult to _______everything，but I'm gradually（逐渐地）getting used to it．I don't find French customs so_______any more．

I'll write again soon and tell you more about my life in France． |Hope you're having a good school year．

Yours

Lin Yue