【推荐1】I live in Delhi, India. It is a very old city   ______   a history of more than 2,000 years. It is also a very large city with two parts — Old Delhi and New Delhi.

Delhi is a big business (商业) center. There are lots of stores and supermarkets. And a lot of ______ from all over the world come here to do business. Delhi is also a(n)______ center. There are many great schools with quite a few students studying in them.

New people come here every day, ______ Delhi becomes bigger and bigger. Traffic jams (交通拥堵) are very ______ in Delhi because the roads are not wide (宽阔的) enough for so many people and cars. There are always lots of people ______ the buses at bus stops.

The houses are very ______ there. Many people live in the neighborhood around the city. Most of them have to get up very early in the morning, and ______ get home very late in the evening. It is really hard for them to live such a life.

Now people in Delhi ______ to make more roads and houses. They are trying to make the city a ______ place to live in.

Lamu is a 12-year-old Tibetan (西藏的) girl. She wants to visit Beijing. But some years ago, Tibetans still thought it would be _________.

Tibet had no railroad. If Lamu took a bus, she would spend a long time reaching Beijing. However, a _______ ticket would cost lots of money.

Some years ago, things changed for Tibetans. They could _______ on the world’s highest railroad. The Qinghai-Tibet Railway was completed after four years! The 1,142-kilometre railroad runs on the Qinghai-Tibet Plateau（高原）. Now Lamu can get to Beijing by train in 48 hours!

“The new railroad greatly helps Tibet’s tourism,” says Lin Yueqin, an expert at the Chinese Academy of Social Sciences（中国社会科学院）.

As more _______ take trains to Tibet, there is more money for Tibetans. With the money, more kids can go to school.

With the new railroad, shopping can be more convenient (方便的) and faster. The railroad also makes things _______ in Tibet. In the past, one could buy a TV set for about 800 yuan in Beijing, but in Tibet, the same set cost 1,500. Without the railroad, it was difficult to _______ things in and out of Tibet.

【推荐3】Imagine you are living in a moving house. Inside the house, there is a kitchen, bathroom and bedroom. ________ they are much smaller than those at your home, they are easy for you to use.

In the US, you can see these moving houses on the road. They are called recreational vehicles (RVs,房车). People call them houses on ________. When it’s holiday time, the whole family will get into these small homes and hit the road for a ________ across the country.

Compared to (与…相比) a real house, this home on the road is a bit ________ for a family who has to spend every hour of every day together. But the best thing about it is that you can do everything you like ________. You can drive as long as you like ________ worrying about finding hotels and restaurants. Or you can just ________ somewhere nice and stay for a few weeks. You may also come across other ________ that are on road trips. Together, you ________ your tents. It’s camping time with a lot of talk and laughter.

________, RVs are not always convenient (便利的). They can sometimes break down and you have to spend time fixing them. But people still like this kind of road trip because they can go where they want whenever they want.

【推荐1】Shanghai Renji Hospital broadcast(直播) a cancer(癌症) operation, using 5G technology first in China with the Da Vinci Robotics System. It is the ________ robotic system for difficult operations. It uses a minimally invasive approach(微创方法).

The broadcast ________ doctors in Renji Hospital’s Ningbo branch(分院) in Zhejiang and their workmates in Shanghai to watch each step of the operation ________ at the same time. It was just like being the surgeon(外科医生) in the operation room.

The patient was a 65-year- old woman ________ from cancer. The degree of ________ for the operation was high. The ________ was performed by Zhong Ming, a pioneer surgeon.

The hospital’s Ningbo branch was in ________ in 2018. But Zhong Ming, who works in both hospitals, soon found that the doctors in Ningbo did not have enough ________ to watch difficult cases and master medical technology. The hospital came up with the ________ to broadcast a live operation.

Doctors in Ningbo are able to ________ the details of the difficult operation with a wider view. The doctors can see clearly ________ Zhong operated on the blood vessels(血管) and nerves(神经). One of the doctors in Ningbo said that in the past they had tried to use other technologies during such broadcasts, but none of them is clear or ________ enough. The 5G network helps the medical circle ________ the problem. This was the ________ time he had watched such a clear broadcast of an operation, and it was impressive(令人印象深刻的).

Maybe one day, we’ll be able to watch a (n) ________ broadcast of an operation in Shanghai through our phones with 5G network. Such broadcasts are good for young doctors to learn the most modern technology to treat more patients.

These days, more and more people are beginning to learn about robots. The robots in films are usually stronger, ________ and cleverer than people. How about them in our daily lives? They often do ________ jobs over and over again. Fewer people will do such boring jobs, ________ robots will never get bored. What’s more, they also help people in need. For example, we often used a guide ________ to help the blind (盲人) travel around. Now, scientists are making robots to help them. One day, the robots may ________ guide dogs’ place. In the future, there will be more robots and they’ll help us in many other different fields.

【推荐3】Have you ever asked your relatives or friends if there is Wi-Fi in their houses? Have you ever ________ Wi-Fi when you are at restaurants? The answers will probably be “Yes”. Most of us ________ Wi-Fi everywhere as if we can’t live without it. But we can only use free Wi-Fi in some personal ________ like hotels and movie theaters. We still have to spend some money ________ the Internet at most time. Here comes a piece of good news.

A very big company called Super Media has decided to change the way of online model completely by giving free Wi-Fi to every ________ on the earth. They have ________ hundreds of satellites (卫星) into space and more in the future. They made this decision for several ________.

One is because they have made a ________ and found that only 66% of the world’s population have been able to get connected on the Internet. Another is because many countries are unable to ________ the necessary service to connect the website for their people.

We can expect to use ________ Wi-Fi everywhere in the near future. We believe that technology will serve more and better.