In the future, everybody will have a Harry Potter invisibility cloak in the closet, said Chu Junhao, 【小题1】 academician of the Chinese Academy of Sciences in Shanghai on Saturday.

At the Super Science Night 【小题2】 (hold) by Bilibili, China’s major video-sharing platform, Chu showed 【小题3】 invisibility can be achieved with special technologies and materials. He asked two staff members to hold a panel in front of him. 【小题4】(initial) , the lower part of his body was visible through the panel. After rotating the panel 90 degrees, his lower half disappeared, 【小题5】 the stage behind him could still be clearly seen.

The magic was realized by a lenticular (透镜的) grating composed 【小题6】 rows of tiny cylindrical (圆柱形的) convex (凸面的) lenses, and each vertical cylindrical convex lens can shrink and thin objects parallel to it, so that light can be refracted (折射的) , according to Chu. When a row of cylindrical convex lenses forms a grating, several images 【小题7】are too small to be noticed by the eye 【小题8】(produce) achieving an invisibility effect. Chu also showed several other ways 【小题9】(invisible) , such as using two substances with similar refractive indices and a plane mirror to create reflection imaging.

“Invisibility in science fiction will become【小题10】(real) as invisibility technology and material develop,” he said. “More invisibility equipment will change our life, such as invisible rooms that can provide better privacy and invisible hearing-aids.”

One of the biggest misunderstandings about China’s tech market is that China is all about copying ideas. But if that ever was the case, it 【小题1】 ( certain) isn’t now. China’s entrepreneurs（企业家）【小题2】 (prove) that they can innovate（创新）. In fact,they’ve become so good at 【小题3】 that the West is now copying their ideas.

Here are a few examples. Facebook borrowed some ideas 【小题4】 China’s popular messaging app—Wechat when 【小题5】 US social media giant Facebook introduced group chats and private messaging. In bike-sharing, a similar transfer occurred. LimeBike copied one of China’s major bike-sharing 【小题6】 (company), Mobike.

China gained an advantage by being able to leapfrog（超越）some older 【小题7】 ( west) technologies and go straight to new tech such as QR codes, electric vehicles, high-speed trains, mobile payment, and super apps that combine all these functions. We are entering a new stage 【小题8】 separate universes are being created. This 【小题9】 (cause) by China’s fast rise, and a 【小题10】 (grow) gap between the US and China on technology innovations that matter for the future.

The wooded hills of New England hide a secret--they weren't always forested. Instead, many were once covered with roads and farms.

This “lost” New England of the colonial era has started to emerge, thanks to archaeologists piercing the forests with their 【小题1】 (late) device called Light Detection and Ranging (LiDAR).

LiDAR reveals farm walls, roads and homesteads hidden within Connecticut’s Pachaug State Forest. From villages 【小题2】 (sink) underwater to cities lost in the rise and fall of mill life, these ghost towns offer 【小题3】 unique look into the rich history of the past.

These archaeological features could not 【小题4】 (see) without the cutting-edge technology that bounces lasers off the ground 【小题5】 then generates precise pictures of surface features. Scientists using the same kind of technology have made new 【小题6】 (discover) while looking at Mayan cities, the plain of Stonehenge, and European palaces.

How did these farms become lost in the first place? 【小题7】 was documented, according to archaeologists, that there had once been extensive farming across New England. But with industrialization, people started to head west and abandoned the farms they once depended 【小题8】 . The forests eventually took over, covering the walls, roads, and homes until the recent findings.

Now 【小题9】 (carry) a strong cultural legacy of past human activity, the woodland has become a quiet monument to 【小题10】 we’ve lost in the development of civilization.