China,     1     takes pride in the Four Great Inventions in ancient times, has once again shown its ability to change the world with its “four new great inventions”: high-speed rail, electronic payment, shared bikes and online shopping.

Recently, the “four new great inventions”     2     (improve) the quality of people’s lives. People can buy what they want simply with a tap at the cell phone at home. They are also very happy that high-speed trains and shared bikes have shortened     3     (they) journeys and made public transport more attractive.

It is increasingly clear that China is leading in many new ways. A growing number of foreign     4     (company) hope to promote the development in their home country like China.

5 . One day, when I was going to check in at an airport, I noticed there was a big problem. The counter person was telling everyone that all the planes were having problems and they would not be able to fly! And it was suggested that a bus would be provided to take us to Seattle. Everyone was worried, as we only had an hour and a half to make the connecting flight, and the bus was not even at the airport yet.

Finally, the bus pulled up, and the driver said, “They just pulled me out of bed after an all-night shift, and they expect me to get you to Seattle in time to catch your fight. Good luck!”

Needless to say, everyone was in a really bad mood. I was loading my baggage into the bus and had hung my banjo (班卓琴) over my back when the bus driver said, “What? Are you going to play that on my bus?” “Well, I really did not plan on it,” I replied.“I was only kidding,”said the driver. But I started thinking about it, and I pulled out the banjo. A worried, angry woman said, “Well, what if I don’t like it?” “Then tell me and I’ll stop,” I replied.

We drove off, and the tension made the atmosphere inside the bus horrendous! Then I started performing the old standard Blue Skies. In a few minutes, I noticed everyone was singing along. I started to sing, too, and before long, the whole bus burst into song.

One song led to another. Everyone laughed and sang, with food passed around the bus, and before long, the airport was in sight.

The bus driver called, “We made it! We never would have done it without the help of our banjo player.” Shouts of approval rang through the bus. People exchanged addresses and invitations to visit, and a few even exchanged hugs.

A few weeks later, my mailbox was filled with letters from my new friends. Their letters reminded me of how, by reaching out with just a song or a bit of friendship, you can turn a very tense situation into a peaceful experience.

A warning system to prevent drivers from falling asleep was introduced at the 2020 China International Fair for Trade in Services,     1     was held from September 4 to 9 in Beijing. The system can judge whether the driver is sleepy by monitoring how long the driver's eyes close. If the driver is tired, the system will sound an alarm until the driver's eyes reopen. In the future, other     2     (danger) driving behaviors, such as not wearing a seat belt and making phone calls while     3     (drive), might also be added into this warning system.