More people than ever pay for items with their mobile phones, whether they’re having their rewards card 【小题1】(scan) by a salesperson for the first time or they’ve gone “all in” by loading their Visa debit and credit card on their phone.

But as 【小题2】(rapid) as mobile payments have grown, the technology is still in its infancy. By 2025, many people could be leaving their wallets 【小题3】 and paying for almost everything using their mobile phones.

A survey discusses the 【小题4】(grow) of mobile payments since 1997 when vending machines that took payments by text 【小题5】(introduce) for the first time. Since 2010, the amount of money 【小题6】 has passed from consumers to merchants via smartphones 【小题7】(go) up nine-fold. By 2027, more than $721 billion will change hands via mobile one.

More importantly, though, more people and more merchants will feel 【小题8】(easy) to use mobile than before, whether it’s those NFC chips in your phones that let you hold your phone up to 【小题9】 scanner or via transaction apps. By 2030, Visa believes mobile payments could become the 【小题10】(prefer) method of both consumers and merchants.

China’s AI development reached a symbolic moment in May 2017 during a match of Go (围棋),【小题1】 (consider) to be the world’s most complex game. Ke Jie, a Chinese player known as 【小题2】world’s best, competed against a program from Google parent company Alphabet in a three-game match. The young 【小题3】 (profession) player lost all three games.

Less than two months after the defeat, China’s central government announced 【小题4】(it) ambitious plans to build the AI abilities of the country, where it aims to create “a next generation artificial intelligence development plan”.

China has several advantages 【小题5】 it comes to the artificial intelligence field, but chief among them is Chinese companies’ access to a huge amount of data. In recent years, China【小题6】(do) a fantastic job of moving its economy to cashless and when you can pay everything with your phone, you collect a huge amount of data.

When you can get these giant data【小题7】(collection), and then apply artificial intelligence to them, you’re going to see better and better and 【小题8】(many) deep insight patterns than anyone else and it'll be a great advantage for China. Apart 【小题9】that, China has the most netizens and the number is growing fast, 【小题10】 (make) it practical for companies to develop and apply the technology.

Taking a closer look at the sun

There is an ancient Chinese story about a giant man named Kua Fu who chases the sun. He drains the Yellow and Wei Rivers during his race and finally dies of dehydration (脱水). His failure has reminded people of the 【小题1】 (stop) power of the sun for centuries. And yet, scientists throughout history 【小题2】 (try) to better understand the most important star in our sky. On Aug. 12, NASA punched the Parker Solar Probe (探测器), marking 【小题3】 start of its trip to the sun.

The probe itself is as big as a car and needs the help of a powerful rocket 【小题4】 (escape) Earth’s orbit, change direction and reach the sun. In order to reach the sun, the probe must complete seven flybys (探测飞行) of Venus, using the power of the planet’s gravity to change 【小题5】 (it) path, sending it towards the sun. But that’s not the only difficult part of the journey. As the probe 【小题6】 (approach) the sun’s corona (日冕), it will have to bear temperatures reaching 1,400 ℃, as well as deal with serious radiation.

If everything goes well 【小题7】 planned. the probe will reach a speed of 692,018 kilometers per hour as it orbits the sun, setting a new record for the 【小题8】 (fast) man-made object ever in history, NBC noted.

The “mission to touch the sun” will “not only make history by answering question 【小题9】have puzzled scientists for decades, but it may also lead to the 【小题10】 (discover) of new phenomena that are completely unknown to us now,” Raouafi told CNN reporters. “This mission has the potential to push solar research into a new direction,” he added.