I had to visit my sister in another town because her husband {#blank#}1{#/blank#} (be) very ill. My children stayed back in {#blank#}2{#/blank#} (they) father's care, except for the youngest. I was nervous taking a train journey alone with my one-year-old daughter. However, I gathered all my courage and boarded the train.

    It was {#blank#}3{#/blank#} (surprise) that there were only three other passengers in that carriage, two old ladies and a young man. My daughter was crying, missing her dad. I tried to comfort her, {#blank#}4{#/blank#} her crying wouldn't stop.

    Just then the young man offered {#blank#}5{#/blank#} (take) my baby into his arms. He stood with her near the window and started talking to her in a soft voice. My daughter stopped crying {#blank#}6{#/blank#} (slow). I was both surprised and relieved. {#blank#}7{#/blank#} stranger handed my daughter back once she was asleep. During the long train journey this young man continuously helped me. He fed my baby, sang to her and told her countless {#blank#}8{#/blank#} (story). I was grateful for this man {#blank#}9{#/blank#} had come to my rescue.

    After so many years, I still remember this stranger on the train with a {#blank#}10{#/blank#} (thank) heart.

    Polar bears are suffering in a much {#blank#}1{#/blank#} (warm) world.

    Polar bears live in environments too cold for most animals. During much of the year, they live and hunt on the frozen Arctic sea ice. Nature has {#blank#}2{#/blank#} （prepare）them for the cold conditions. But nothing has prepared the bears for the danger {#blank#}3{#/blank#} threatens the only home they know.

    The polar bears' world is melting. Studies show that the amount of the polar ice {#blank#}4{#/blank#}（have）decreased by 9.8% every 10 years since 1978. Now about 20,000 to 25,000 polar bears live in the Arctic. Polar bears rely {#blank#}5{#/blank#} the sea ice for their survival. “The sea ice is more {#blank#}6{#/blank#} just this platform that the bears walk over,” says Andrew Derocher, {#blank#}7{#/blank#} scientist who studies North American polar bear populations. “{#blank#}8{#/blank#} it, they can't exist.”

    Some melting and refreezing of the polar ice is natural. But in a warmer world, these cycles speed up, and bears have less time {#blank#}9{#/blank#} (hunt). Normally, they have three months in the spring when they gain more weight. The extra fat is used later, when the bears are not {#blank#}10{#/blank#}(active) hunting.

    Last night was the last game for my eight-year-old son's soccer team. It was the final quarter. The score was two {#blank#}1{#/blank#} one, my son's team in the lead. Parents surrounded the playground, offering encouragement.

    With less than ten {#blank#}2{#/blank#} (remain) seconds, the ball suddenly rolled in front of my son's teammate, Mickey O' Donnel. With shouts of “Kick it!” echoing across the playground, Mickey turned around and gave {#blank#}3{#/blank#} everything he had. All around me the crowd erupted (沸腾). O' Donnel had scored!

    Then there was {#blank#}4{#/blank#} (silent). Mickey had scored all right, {#blank#}5{#/blank#} in the wrong goal, ending the game in a tie. For a moment there was a total hush. You see, Mickey has Down Syndrome（综合症）and for him there is {#blank#}6{#/blank#} such thing as a wrong goal. All goals were celebrated by a joyous hug from Mickey. He had even been known to hug the opposing players when they scored.

    The silence was finally broken when Mickey, his face filled with joy, hugged my son {#blank#}7{#/blank#} (tight) and shouted, “I scored! I scored. Everybody won! Everybody won!” For a moment I held my breath, not sure how my son {#blank#}8{#/blank#} (react). I need not have worried. I watched, through tears, as my son threw up his hand in the classic high-five salute and started chanting, “Way to go Mickey!” Within moments both teams surrounded Mickey, joining in the chant and congratulating him on his goal.

    {#blank#}9{#/blank#} (late) that night, when my daughter asked {#blank#}10{#/blank#} had won, I smiled as I replied, “It was a tie. Everybody won.”

    China, which takes pride in inventions in ancient times, has once again shown its ability {#blank#}1{#/blank#}(change)the world with its “new four great inventions”: high-speed railways, electronic payments, shared bicycles and online shopping. The “new four great inventions” are all related to China's high-tech innovation(创新), {#blank#}2{#/blank#}improved the quality of people's lives. “My wallet is no longer in use. I can buy and eat {#blank#}3{#/blank#}I want simply with a tap of my phone,” said Lin Jinlong, {#blank#}4{#/blank#}overseas Chinese student from Cambodia,{#blank#}5{#/blank#}(add) that “even pancake sellers are using Alipay (mobile payment). We can also order food at home, and it is of great {#blank#}6{#/blank#}(convenient). If I were at home in Cambodia, I would have to go outdoors.” The bikes themselves are not new, but the operating model of bike-sharing is based {#blank#}7{#/blank#}satellite navigation system, mobile payment, big data and other high technologies. It is{#blank#}8{#/blank#}(increase) clear that China is innovating and no longer copying Western ideas. This is partly because China skipped over the PC age and went directly to mobile. China has the{#blank#}9{#/blank#}(large) mobile use in the world.

    In terms of the “new four great inventions”, Charlie Dai, principal analyst of American market research company Forrester, said, “These products and service{#blank#}10{#/blank#}(improve) customer experience so far, improving national and global economy at the same time”.

    China's first artificial intelligence (Al) textbook for high school students {#blank#}1{#/blank#}(bring) out last week, following a plan by central government {#blank#}2{#/blank#}(include) Al courses in primary and secondary school.

    The nine - chapter textbook, {#blank#}3{#/blank#}(name) " Fundamentals of Artificial Intelligence" , was written by outstanding {#blank#}4{#/blank#}(scholar) from well - known schools nationwide, under the joint efforts by the research center for MOOC at East China Normal University and Al startup SenseTime. It includes the history of Al and how the technology can be applied in areas such as facial recognition, auto driving and public security.

    "The textbook focuses not only on basics of Al, but on {#blank#}5{#/blank#}(practice) use of Al in daily life," said Chen Yukun, a professor at East China Normal University, {#blank#}6{#/blank#} is also a contributor to the book.

    Up till now, about 40 high schools across the country {#blank#}7{#/blank#}(undertake) the task of being the first group of Al high education pilot program {#blank#}8{#/blank#} introducing the textbook in the curriculum. "The Al sector is facing a talent shortage {#blank#}9{#/blank#}(global). The publication of the book is {#blank#}10{#/blank#}breakthrough as it takes Al technology out of the 'Ivory tower' and makes it part of high school learning," said Lin Dahua, a professor at the Chinese University of Hong Kong.