How will our continuously growing population affect our way of life, our environment, even our planet? No matter how you look at it, we will face {#blank#}1{#/blank#}extremely serious problem. By the middle of the 21^st century, we {#blank#}2{#/blank#}(use) up all the oil that drives our cars if at the rate we're going. Even if scientists develop some new {#blank#}3{#/blank#}(way)of feeding the human race, the crowded conditions on the earth will make {#blank#}4{#/blank#}necessary for us to look for open space somewhere else. But none of the planets in our solar system are able  {#blank#}5{#/blank#}(support) life at present. One possible solution {#blank#}6{#/blank#}the problem, however, has recently been suggested by an American scientist, Professor Carl Sagan. His idea is {#blank#}7{#/blank#}before the earth's resources are almost exhausted, it will be  {#blank#}8{#/blank#}(total)possible to change the atmosphere of Venus（金星）and so create a new world almost as large as earth itself.

    However, {#blank#}9{#/blank#} his idea is turned into reality, humans have a long way to go. On the one hand, Venus is much {#blank#}10{#/blank#}(hot)than the earth; on the other hand, there is only a tiny amount of water there.

    High-speed railways, electronic payments, shared bicycles and online shopping are China's four new ways of life. They are most appealing to youths from 20 countries participating{#blank#}1{#/blank#}the Belt and Road Initiative. The new four great inventions are all related to China's gigh0tech innovation,{#blank#}2{#/blank#}has improved the quality of people's lives, “my wallet is no longer in use. I can buy and eat whatever I want{#blank#}3{#/blank#}(simple) with a tap of my phone,” said Lin Jinlong, an overseas Chinese student from Cambodia,{#blank#}4{#/blank#} (add) that even pancake sellers are using Alipay (mobile payment).

    In{#blank#}5{#/blank#}word, China is leading in many ways. Bike sharing, for example, is not new itself. But China has made it much more convenient and{#blank#}6{#/blank#}(enjoy) both in China and overseas. Leading Chinese bike-sharing{#blank#}7{#/blank#}(company), Mobike and Ofo are now operating in foreign countries such as Singapore and Britain. Users in the countries{#blank#}8{#/blank#}(feel) excited and posted photos of {#blank#}9{#/blank#}(they) riding the Chinese bikes on social media. A growing number of foreigners hope {#blank#}10{#/blank#}(promote) economic development in their home countries by paying more attention to the achievement of China.

    A toy animal might not matter much to the average person, but for a child, it could mean the world. When 10-year-old Leon Ashworth's mom couldn't afford {#blank#}1{#/blank#}(buy) him a toy panda he badly wanted, he wrote a{#blank#}2{#/blank#}(pity)note on the toy's box begging{#blank#}3{#/blank#}(shopper) not to buy it until his mom could. What happened next {#blank#}4{#/blank#}(be)so heartwarming, it would melt you.

    The boy, Leon Ashworth {#blank#}5{#/blank#}lives in Liverpool, England with his mom, first saw his beloved 'Panda' at an Asda supermarket, the British equivalent of Wal-Mart. Though he was willing to wait with{#blank#}6{#/blank#}(patient) until his mom {#blank#}7{#/blank#}(pay) on June 15th to take the lovely panda home, the store's staff decided to do something extremely thoughtful after they noticed Leon's scribbled letter. They decided to buy it for him.

    In search {#blank#}8{#/blank#} the young author, whom they didn't know at the time, they posted the note on Facebook and eventually attracted the attention of Debbie Ashworth, who{#blank#}9{#/blank#} (immediate) recognized her son's handwriting. The Asda crew invited the mom and her son back to the store, and had a wonderful surprise waiting for them. “This is{#blank#}10{#/blank#}best day of my life.” Leon remarked to his mom.

    Polar bears are suffering in a {#blank#}1{#/blank#} (warm) world than ever before. Polar bears live in environments too cold for most animals. During much of the year, they live and hunt on the{#blank#}2{#/blank#} (freeze) Arctic sea ice. Nature has prepared them for the cold conditions but nothing has prepared the bears for the danger that {#blank#}3{#/blank#} (threat) the only home they know. The scientists have drawn a {#blank#}4{#/blank#} (conclude) that the polar bears' world is melting. Studies show that the polar ice has reduced{#blank#}5{#/blank#}9.8% every 10 years since 1978. Now about 20,000 to 25,000 polar bears live in the Arctic. Polar bears depend on the sea ice for their {#blank#}6{#/blank#} (survive). "The sea ice is more than just this platform that the bears walk over." As Andrew Derocher, a scientist who studies North American polar bear populations puts {#blank#}7{#/blank#}, "Only if polar ice melts quite slowly {#blank#}8{#/blank#}they survive on the earth." Some melting and refreezing of the polar ice is natural. {#blank#}9{#/blank#} in a warmer world, these cycles speed up, and bears have less time to hunt. Normally, they have three months in the spring when they gain more weight. The extra fat is used later, {#blank#}10{#/blank#} the bears are not actively hunting.

    When we read a poem, we often imagine what the poets{#blank#}1{#/blank#} (think) when they wrote or what they were doing at the time. These thoughts let us connect with the words better, as if we'd created the poem{#blank#}2{#/blank#} (we). Will a poem still mean as much if a compute writes it?

    By{#blank#}3{#/blank#} (use) algorithms (算法) , computers can now create all kinds of text, including research papers, books, news, stories and even poems. Computer-generated poems might be correct in both grammar and style, {#blank#}4{#/blank#}some say they still lack {#blank#}5{#/blank#} (create) and true meaning.

    Australian researcher Oscar Schwartz created a website{#blank#}6{#/blank#}(call) "bot or not". On his site, you can read poems and guess whether they{#blank#}7{#/blank#}(write) by a human or a computer. Schwartz recently gave a speech at TedX Sydney, in {#blank#}8{#/blank#}he stated that some of the website's poems were able to{#blank#}9{#/blank#}(foolish) 65 percent of human readers.

    He said that on his website, he hoped people would question the difference between humans and machines—and be able to identify what it is {#blank#}10{#/blank#}makes us human.