Once upon a time, there was a man from the State of Chu who loved his sword very much. One day, he was sitting in a boat preparing {#blank#}1{#/blank#}(cross) a river, when he accidentally {#blank#}2{#/blank#}(drop) his sword into the water. The people on board reminded him that he should go into the water to find his beloved sword back. The man felt {#blank#}3{#/blank#}(anxiety), too.{#blank#}4{#/blank#}, he turned a deaf ear to that. And instead, he {#blank#}5{#/blank#}(immediate) took out a knife and made a notch(刻痕) on the side of the boat {#blank#}6{#/blank#}his dear sword fell. The people wondered why he did so. He said proudly the notch could help get his sword back. Shortly after the {#blank#}7{#/blank#}(arrive) at the shore, he entered the water just beneath the notch he made. After rather a long time, he returned empty-handed. Without doubt, he was laughed at in public and his story became {#blank#}8{#/blank#}well-known joke in China.

    Today the idiom {#blank#}9{#/blank#}(relate) to the story is used to describe a person who stick {#blank#}10{#/blank#}strict rules without considering a changing environment.

—Not yet. It {#blank#}1{#/blank#}(paint)at present.

    What can keep your brain young and active? Marie Pasinski{#blank#}1{#/blank#} doctor from Massachusetts General Hospital, says, “New experiences as well as a good snack.”

    The next time you feel{#blank#}2{#/blank#} (bore) at the pool, play a board game or cards. Exercising your mind with a challenging game that requires brainpower,{#blank#}3{#/blank#} chess or bridge (桥牌), is more than just fun. These types of games are so interesting{#blank#}4{#/blank#} they can build up working memory. Traveling, especially in the places where English isn't spoken, can make you{#blank#}5{#/blank#} (smart) and more intelligent. There is a great deal of recent research proving its benefits.

    {#blank#}6{#/blank#} the other hand, eat more nuts! Not only are nuts the perfect snack for a summer road trip, they also keep your mind sharp. Some nuts are rich in magnesium(镁),{#blank#}7{#/blank#}can improve learning skills and memory of mice. The research{#blank#}8{#/blank#} (publish) in the Journal Neuron last month. Another study at New York State Institute also proved the point{#blank#}9{#/blank#} (show) that mice who ate nuts made improvements in learning, memory, emotional regulation and movements, compared with{#blank#}10{#/blank#} who didn't eat nuts.

    Pollution takes away all the beauty of the beaches of Hawaii. I hate to go to the beaches on {#blank#}1{#/blank#}(sun) weekends and see rubbish bags{#blank#}2{#/blank#}(lie) on the sand, cigarette butts(烟头）{#blank#}3{#/blank#}(bury) in the sand, and soda cans floating in the ocean.

    One thing that really annoys me is that I see tourists who visit Hawaii leave their rubbish on the beaches. I was always taught after drinking soda to throw the can into the place {#blank#}4{#/blank#}it should stay at --the trash can. Another thing that annoys me is that some people walk right by rubbish {#blank#}5{#/blank#}pretend that it's not there.

    The dogs or the fish are not to blame for it. It's our fault and we must blame {#blank#}6{#/blank#}(we).Everyone has to do his or her part{#blank#}7{#/blank#} (solve) this problem. It can't be difficult to do the job. There are a lot of things that we can do. First of all, we can help pick {#blank#}8{#/blank#}rubbish along the beaches. We could also form organizations that help clean up our beaches, More{#blank#}9{#/blank#}(important),we need to start now before the beaches{#blank#}10{#/blank#}(damage) beyond repair.

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.