In the time of Queen Victoria, cholera, a deadly disease, hit London, which often resulted in large numbers of {#blank#}1{#/blank#}(dead). John Snow, a then well-known doctor, became{#blank#}2{#/blank#}(inspire) when he thought about helping ordinary people who {#blank#}3{#/blank#}(expose) to cholera. John Snow thought {#blank#}4{#/blank#}most important was to find its cause. He got interested in two theories {#blank#}5{#/blank#}(explain) how cholera killed people. He believed in the second theory{#blank#}6{#/blank#}suggested people absorbed the disease with their meals. He began to gather information and made a map, on which he marked {#blank#}7{#/blank#}the victims(受害者)had lived. As a result, he found out that the {#blank#}8{#/blank#}(pollute)water was the cause of cholera and suggested that the source of all water supplies{#blank#}9{#/blank#}(examine)immediately. Finally, “King Cholera”{#blank#}10{#/blank#} (defeat).

    Five months ago. I {#blank#}1{#/blank#}(happen) to be upstairs at dusk when the window was open. I didn't go downstairs until the window had to {#blank#}2{#/blank#}(shut). The dark, rainy evening, the wind and the thundering clouds held me {#blank#}3{#/blank#}(entire) in their power.

    It was the first time in one and a half {#blank#}4{#/blank#}(year) since we found shelter here that I'd seen the night face to face. Sadly I am only able to look at nature through dirty curtains {#blank#}5{#/blank#}(hang) before very dusty windows.{#blank#}6{#/blank#}is no pleasure looking through them because nature is one thing{#blank#}7{#/blank#}really must be experienced. One evening when it was so warm. I stayed {#blank#}8{#/blank#}(wake) on purpose until half past eleven in order to have {#blank#}9{#/blank#}good look at the moon by myself. But as the moon gave far too much light, I {#blank#}10{#/blank#}(not dare) to open the window.

    Happiness can be described {#blank#}1{#/blank#} a positive mood and a pleasant state of mind. There are many factors {#blank#}2{#/blank#}(contribute) to happiness.

    A person in an apparently ideal situation is not {#blank#}3{#/blank#}(necessary) happy. The ideal situation may have little to do with his actual feelings.

    A good education and income are usually considered necessary for happiness. Though both may contribute, {#blank#}4{#/blank#} are only chief factors if the person is seriously undereducated or actually suffering from lack of physical needs.

    The rich {#blank#}5{#/blank#}(be) not likely to be happier than the middle-income group or even those with very low incomes. People with college educations are somewhat happier than those who did not graduate from high school, and it {#blank#}6{#/blank#}(believe) that this is mainly.{#blank#}7{#/blank#} they have more opportunity to control their {#blank#}8{#/blank#}(life). Yet people with a high income and a college education may be less happy than those with the same income and no college education.

    Poor health does not rule out happiness except for the severely {#blank#}9{#/blank#}(disable) or those in pain. Learning {#blank#}10{#/blank#}(cope)with a health problem can contribute to happiness.

    Nishit Sharma takes a heavy bag everywhere he goes. Whether he is traveling around the Kerala coastline or hiking in the mountains, he always carries a laptop and four or five cameras with him. {#blank#}1{#/blank#} They have helped him turn his adventures into amazing videos, inspiring people everywhere to get out and explore all that India has to offer.

In only two years, Sharma has produced nearly 100 videos for his web page on YouTube. {#blank#}2{#/blank#}From the thick forests in Meghalaya( a state in northeastern India), to the purple mountains in Tamil Nadu(a state in southeastern India), where he recorded the rare blossoming of the Kurinji flowers,—a phenomenon that happens once every 12 years—Sharma has shown a side if India that many people may never have known existed. Not even himself.

    {#blank#}3{#/blank#}He vividly remembers riding through the south of India on his motorcycle, exploring tree-lined streets in Pondicherry's French district, and being struck by the beauty of the peaceful hill station Munnar.

    {#blank#}4{#/blank#}However, Sharma knows there is no end to his exploration in India. He is so enthusiastic about sharing the lesser-seen side of his homeland, in new and better ways, that he has been known to open his laptop and work even on mountaintops. "{#blank#}5{#/blank#}And I've never stopped," he says. "The driving force for me is to keep learning."

A. Then there was the motorcycle tour in Kerala.

B. I started producing travel videos two years ago.

C. He might be running out of new places to sit.

D. As a travel writer, these are tools of his trade.

E. Up until now, he has already traveled across India.

F. I'm lucky to have been born and brought up in India.

G. Along the way, he has learned a lot about his homeland.

Yungang Grottoes (石窟) in Datong, Shanxi Province, are a world cultural heritage (遗产) site with a history that {#blank#}1{#/blank#} (go) back more than 1,500 years. In Yungang's 45 big grottoes and more than 200 small grottoes, roughly 59,000 figures of the Buddha, {#blank#}2{#/blank#} (be) a priceless treasure of human culture.

{#blank#}3{#/blank#}because of the effects of climate change and natural disasters, the grottoes face damage year after year. Thanks to {#blank#}4{#/blank#} (advance) digital technology, researchers are busy "duplicating" (复制) the Yungang Grottoes in an attempt to preserve the precious cultural relics (遗物). Employing 3D laser scanning technology, the researchers{#blank#}5{#/blank#} (digital) record the shapes, colors and other fine details of the grottoes and later reproduce{#blank#}6{#/blank#}by using 3D printing technology.

The new technology could enable more people{#blank#}7{#/blank#} (access) the cultural relics despite the distance. In June, 2020, the Zhejiang University Cultural Relics Research Institute and Yungang Grottoes Research Institute together "copied and pasted" Cave No. 12 of the Yungang Grottoes for an{#blank#}8{#/blank#} (exhibit) in Hangzhou, in which is the world's first 3D-printed 1:1 "copy" of a grotto.

These Yungang{#blank#}9{#/blank#} (researcher) attempt is a good example of technology helping to preserve cultural heritage. It is hoped{#blank#}10{#/blank#}the new digitalized technologies will facilitate the "rebirth" of the cultural relics, and bring them to more places worldwide.