A 14-year-old Chinese boy overcame two of humankind's most dreaded fears—getting stuck in an elevator and getting homework {#blank#}1{#/blank#} (do), in a single night {#blank#}2{#/blank#}(owe) to his calm-witted character.

    Sun Yixiao was on his way up on Tuesday evening after school,  {#blank#}3{#/blank#} the lift suddenly came to a stop. A moment of panic followed before the  {#blank#}4{#/blank#}(teenage) could find a way out.

    Sun said he tried to open the elevator door, {#blank#}5{#/blank#}(press) all the buttons in the hope to get the elevator to work again, but it didn't work.

    Without a cell phone at hand, Sun tried yelling to get attention of people outside, but no one responded as time passed by. He slipped a note through the door  {#blank#}6{#/blank#} the message "people stuck inside, please ask the property management for help," and hoped someone  {#blank#}7{#/blank#}(pick) it up and act on it.

    After exhausting all his options without knowing how long it would take before someone found him, he took out his textbooks and started to do his homework {#blank#}8{#/blank#}(patient).

    Soon after he finished his duties, Sun heard loud {#blank#}9{#/blank#}(voice) outside. A large crowd including his teachers and other parents had come to the rescue, by which time he {#blank#}10{#/blank#}(trap) in the elevator for over five hours.

    Nowadays, the life of many people in the world is{#blank#}1{#/blank#}(affect) by globle warming. For example, greenhouse gas has a bad effect{#blank#}2{#/blank#}both people and environment. The earth's surface temperature{#blank#}3{#/blank#}(go) up by about 1 degrees centigrade in the past100 years. As a matter of fact, we may feel that we can hardly put up with the extremely hot summer and we can't get accustomed to warm winter. The rise of the earth's surface temperature has made much {#blank#}4{#/blank#}(different) to human health, the existence of creatures {#blank#}5{#/blank#} the balance of ecosystems. There is no doubt that it is human activities that result{#blank#}6{#/blank#}the bad environment. As a {#blank#}7{#/blank#}(consequent), conditions permitting, all countries in the world should try their best {#blank#}8{#/blank#}(improve) our environment. Even if our effect is limited, it will{#blank#}9{#/blank#}(eventual) make a great difference if we keep on{#blank#}10{#/blank#}(work) together to deal with global warming. Without all people's joint efforts, what would our future be like?

    Throughout modern history, perhaps there has never been a scientist as iconic (偶像的) as Stephen Hawking.

    Whether he{#blank#}1{#/blank#}(educate) the world with his knowledge of the universe, or making fun of himself in TV shows, it is hard to imagine what the world will be like now Hawking is no longer in.

    On March 14, 2018, the British physicist passed away in Cambridge. Since then, many people have expressed their condolences (哀悼) on social media, including British computer scientist Tim Berners-Lee{#blank#}2{#/blank#}invented the World Wide Web. “We have lost a great mind and a wonderful spirit,” Berners-Lee wrote.

    Hawking was an icon for many reasons, but he will be best remembered {#blank#}3{#/blank#} his work in the field of science.

    Building on German scientist Albert Einstein's work, Hawking explained his belief that space{#blank#}4{#/blank#} (start) with the Big Bang, and will end with black holes.

“This complete set of laws can give us the {#blank#}5{#/blank#} (answer) to questions like 'How did the universe begin?'” Hawking wrote in his 2010 work The Grand Design. “Where is it going and will it have an end? If so, how will it end?”

    Besides his work in science, he also managed to overcome many difficulties in his personal life. While{#blank#}6{#/blank#} (study) at Cambridge University, he was diagnosed with motor neuron (运动神经元) disease at the age of 21. His {#blank#}7{#/blank#} (ill) left him paralyzed and he was told he only had a short time to live. However, he went on to become one of the{#blank#}8{#/blank#} (great) minds the world has ever known.

    “I felt it was unfair. Why should this happen to me?” he once recalled. “At the time, I thought my life was over and that I would never realize the potential I felt I had. But now, 50 years later, I can be satisfied with my life.”

Hawking left behind a great legacy (遗产). His signature book A Brief History of Time: From the Big Bang to Black Holes{#blank#}9{#/blank#}(publish) in 1988, became one of the world's best-selling science publications. And in 2014, UK actor Eddie Redmayne played Hawking in the movie The Theory of Everything, which tells the tale of the physicist's life.

    He may no longer be with us{#blank#}10{#/blank#} Hawking will continue to inspire the world for generations to come. As he once said himself, “Look up at the stars and not down at your feet!”

    Last month I took the bus back to my hometown. I carried a big piece of luggage with me and put it beside my leg on the bus. As usual, I closed my eyes and {#blank#}1{#/blank#} （try）to take a rest. Suddenly, I felt someone {#blank#}2{#/blank#} (move) my luggage. I opened my eyes and looked up. It was the driver {#blank#}3{#/blank#} carried my luggage away, saying "you will be more comfortable if you put the luggage at the first row {#blank#}4{#/blank#} no one takes the seat". As a salesperson, I have taken these buses many times, and never have I {#blank#}5{#/blank#} (meet) such a considerate driver who cared so much about the passengers before. This simple act touched my soft heart and will always {#blank#}6{#/blank#} (keep) in my memory.

    I think we have to learn from him and serve our clients（客户） much {#blank#}7{#/blank#} (well). We have to be more considerate and offer more attentive service to our clients during {#blank#}8{#/blank#} (they) visit to us. Sometimes one little thing may make people happy or angry, {#blank#}9{#/blank#} make the clients decide whether {#blank#}10{#/blank#} (do) business with us or not.