The first underwater tunnel—Bangabandhu Sheikh Mujibur Rahman Tunnel in South Asia, undertaken by China Communications Construction Company, opened in Bangladesh on Saturday.

    1     (locate) at the mouth of the Karnaphuli River, the tunnel connects the east and west banks of the river. It is 9. 3 kilometers long, has four lanes and is designed for speeds of 80 kilometers per hour. Major technical     2     (difficult) in construction had to be overcome, such as geological structures. To solve the problems, the project team applied the world’s     3     (large) steel casing (框架) , which allowed specialized machinery     4     (enter) and exit the tunnel.

The project, which was designed     5     Chinese standards, built using Chinese equipment and managed by Chinese enterprises,     6     (accomplish) as a successful exploration of China’s complete industrial chain for the construction of tunnels overseas, and will become     7     shining business card abroad.

As part of the Bangladesh-China-India-Myanmar Economic Corridor, the tunnel is an important link in the Belt and Road Initiative. Not only will it     8     (great) improve transportation conditions in Chattogram     9     will drive economic development in Bangladesh. Moreover, it improves the Asian highway network, promotes connectivity between Bangladesh and     10     (neighbor) countries and will encourage the internationalization of Bangladesh’s development.

The Park Hyalt Ningbo drew us to visit this city in China that we may otherwise have not yet discovered. We planned to book a First Class ticket to Ningbo but when     1     tickets for that cabin were sold out, we chose Business Class. We had no knowledge about     2     the train cabins and seats would look like, so we were more than     3     (pleasant) surprised to see that as we boarded the train. Inside, the spacious leather seats     4     (surround) by a hard shell which gives a small feeling of     5     (private).

We enjoyed traveling the CRH in Business so much     6     we decided to book the same class ticket     7     our trip back to Shanghai on our return. This time however when we boarded the train there was a small automatic door to our left and the cabin had only 9 Business Class seats. This     8     (small) cabin felt much more private. The ride was smooth and peaceful. There was also a train attendant     9     came around with water, juice and a light snack. It was great to have so much space for our luggage as well.

This is one of those cases where it really made sense for us to spend a little bit more for a far better experience.

If we find ourselves     10     (board) a CRH train again in the future, I would choose the Business Class ticket again.

About 226 million passenger trips     1     (make) during this year’s week-long Spring Festival holiday, a significant increase from last year     2     still fewer than 2019. This Monday     3     (mark) the peak of the yearly travel rush.     4     the epidemic (疫情) has caused major decreases     5     public traffic, more private cars traveled on expressway networks during the rush.

From Jan 7 to Sunday, small passenger     6     (car) made 744 million trips on expressways, 14.6 percent more than the same period in 2019 and 21.5 percent more     7     that in 2022, according to the     8     (office) statistics.

A “return peak” was seen across the country on Friday as     9     public holiday ended. On that day some 50.92 million trips were made, a year-on-year increase of 83.1 percent from last year,     10     (show) people are getting life back from the year-long epidemic.

Not satisfied with pushing the boundaries of speed, endurance and civil engineering, Chinese companies are among the first in the world     1     (introduce) new technology such as driverless train operation and advanced signaling and control technology.

The driverless bullet trains     2     (connect) Beijing and Zhangjiakou in northern Hebei Province are capable of hitting speeds up to 350 kph, which makes them the world’s     3     (fast) driverless trains. The new route, opened in December 2019 as part of preparations     4     the Beijing 2022 Winter Olympic and Paralympic Games,     5     (reduce) travel time for the 174-kilometer journey from three hours to less than 60 minutes so far.

    6     (build) in just four years, the line has 10 stations serving two of the major Winter Games venues (举办地), plus another at Badaling Changcheng, making the Great Wall of China faster     7     (access) for tourists.     8     latter is the world’s deepest high-speed railway   station, situated 102 meters underground. These stations are like airport     9     (terminal), with acres of spotless polished marble and glass, enormous information screens and lounges     10     passengers are held until their train is called.

At the end of the 19th century, nearly 40 percent of American cars were electric. In cities with early electric systems, battery-powered cars were     1     popular and reliable choice, compared with their gas-powered competitors.     2     early car batteries were expensive and inefficient. At the same time, new     3     (discover) of oil fields lowered the price of gas, and new advances made gas-powered cars more appealing. That's why gas-powered cars     4     (rule) the roads for the next 55 years. Aside from some special-purpose vehicles, electric cars were nowhere to be found.

However, in the 1980s, the tide began to turn. Studies associating car emissions     5     smog(霾) encouraged governments to reconsider electric vehicles. Many companies were developing increasingly efficient batteries at that time. In 2008, Tesla Motors went further,    6     (attract) the attention of the world with its lithium-ion-powered (锂电的) sport cars,     7     could travel more than 320kms on a single charge. Since then, electric vehicles     8     (improve) in cost, performance, efficiency and availability. They can accelerate     9     (fast) than gas powered sports cars. And though some models still have a high upfront cost, they save their drivers money in the long run.

As governments around the world focus on slowing climate change, electric vehicles are now expected     10     (replace) gas-powered ones altogether. Soon, electric cars will reclaim their place on the road.

People need transportation to move from one place to another. As time went by, transportation methods improved. Especially after the invention of airplanes, they made travel more convenient and     1     （easy）.

The airplane     2     （invent）by Orville and Wilbur Wright in 1903.     3     first airplane, Wright Flyer I, flew 36.5 meters in 12 seconds. After that, the two brothers kept     4     （improve）their airplanes. They     5     （fly）in public in France in 1908, and started taking passengers with them. Ever since, many other people made great efforts to improve and develop airplanes. Thanks to their efforts, airplane technology developed     6     （extreme）fast.

Today, airplanes have many different     7     （apply）. People can use airplanes to travel to other countries, send urgent mails and help people     8     danger. They use airplanes to send water, food, medicine, etc. to cities that need help. However, airplanes are not only used in positive ways,       9     they are also used to fight wars.

Many things     10     （change）since the invention of the airplane. Airplanes have made travel or transport faster. Airplanes have really changed our lives.