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Dear Miss Tu,

Yours sincerely,

Li Hua

So rapidly does the technology develop that no one can predict what may happen in the future. The number of 5G users in China has reached 20 percent, which leaves the people in the world  (amaze). In China, operators are quick to provide constant nationwide coverage, (ensure) users a consistent experience. They also offer flexible service packages that delivers a beneficial result for both users and  (they).

High-quality 5G networks (drive) rapid growth of mobile data traffic so far, according to Ding Yun, Huawei's executive director. As is estimated, the average data traffic per user per month will reach 600 GB by 2030. As a consequence this, the energy consumption of wireless networks will (definite) increase a lot if energy efficiency of existing networks remains unchanged. However, it is confirmed that Huawei has offered a comprehensive range of products and measures, will deal with the power consumption issues of wireless networks.

Huawei has already employed low-carbon  (strategy) in more than 100 countries, including Saudi Arabia, Greece, Pakistan and Switzerland, helping operators reduce carbon dioxide emissions by 40 million tons. As  important player in the communications industry, Huawei will continue to put green development at the center of everything it does and develop innovative ways to build  (green) 5G networks worldwide than before. 

A teenager from New York has invented a low-cost tool to spot elephant poachers(偷猎者) in real time.

Anika Puri, 17, won the 2022 Peggy Scripps Award for Science Communication for her model of a machine-learning-driven software that 41  movement patterns in thermal infrared(热红外线) videos of humans and elephants. 

"I'm very excited by the 42 focusing on endangered species and environmental science," Puri said.

During a recent trip to India, Puri realized that elephants were still being 43 for their tusks."I was quite shocked." Puri said. "Because I always thought. ‘Well, poaching is 44 : how come it really is still such a big 45 ?"

Over the next two years, Puri 46  the software EISa (short for elephant savior). This wildlife poacher detection solution is based on a 47  process: an EISa camera attached to an iPhone 48  over a park on a drone(无人机) and 49  the movements of elephants or humans.

Puri says the software is four times more 50  than existing state-of-the-art detection methods. It also removes the 51  for expensive high-resolution(高分辨率的) thermal cameras.

The 17-year-old's invention has earned 52 from notable scientists. "Puri's software is quts admirable", says Jasper Eikelboom, an ecologist. "It's quite 53 that a senior high school student has been able to 54 such a solution like this. Not only the research and the analysis but also being able to 55 it in the models."

Research from Harvard University's Wyss Institute have made "robotic shorts" that can help people use less energy when they walk or run.

A motor on the user's back pulls cables connected to the laps.

In the past, such devices have focused only on helping people walk or run, but not both, since walking and running use different hip(臀部) movements. But a computer on the shorts can tell which way the user is moving, 

The researchers found that the main benefit of the shorts was reducing the energy people needed to walk or run. In tests, the energy needed for walking was reduced by 9.3 percent.  Less energy was needed both on flat ground and on hills.

The researchers said that while the shorts weigh about 5 kilograms, moving with them makes users feel lighter. The tests showed that a person walking with the device would feel 4 kilograms lighter, 

The team now also wants to make the device itself 40 percent lighter. They hope the shorts can help people in danger of injury at work and those who want to improve their physical performance, 

Conor Walsh, who helped lead the study, says he hopes such devices will be available to everyone in the future.

A. as well as those with disabilities.

B. Are you eager to possess such kind of shorts?

C. and someone running would feel 5.7 kilograms lighter.

D. For running, people needed about 4 percent less energy.

E. but those excellent athletes are also able to benefit from running.

F. The shorts are made of soft material and are designed to be easy to move in.

G. allowing the device to provide the right kind of assistance for both movements. 

ChatGPT, designed by OpenAI to carry on conversations just like humans, has become a viral excitement. The AI-powered tool went from zero to a million users in just five days! It is capable of providing in-depth answers to user questions, which has even drawn the attention of distinguished technology companies. 

The intelligent robot understands what the user says or types and then responds in a way that makes sense. Its vast body of knowledge has been gathered from the internet and archived books, making ChatGPT a useful tool for researching almost any topic. 

"We have a lot of information on the internet, but you normally have to Google it, then read it and then do something with it," says Ricardo, chief science officer and co-founder of AI company Erudit. "Now you'll have this resource that can process the whole internet and all of the information it contains for you to answer your question."

ChatGPT cannot think on its own. It depends on the information that it has been trained on. As a consequence, the AI tool works well for things that have accurate data available. However, when unsure, ChatGPT can get creative and flow out incorrect responses. OpenAI warns users to check the information no matter how logical it sounds. Also, ChatGPT has only been trained with information till 2021. Hence, it cannot be relied upon for anything that happened after that. 

Experts believe ChatGPT has limitless potential to solve real-world problems. It can translate long texts into different languages, create content on almost any topic, and even summarize books. 

Nevertheless, ChatGPT has received mixed reactions from educators. Some believe it could serve as a valuable tool to help build literacy skills in the classroom and could also be used to teach students difficult science or math concepts. But other educators, who fear this will prevent them from building critical thinking and problem-solving skills, think ChatGPT will encourage students to cheat. Consequently, many districts are starting to cease using it in schools.