(2019全国卷I)阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。The polar bear is found in the Arctic Circle and some big land masses as far south as Newfoundland. While they are rare north of 88°,there is evidence _61__ they range all the way across the Arctic, and as far south as James Bay in Canada. It is difficult to figure out a global population of polar bears as much of the range has been _62__ (poor) studied; however, biologists calculate that there are about 20,000-25,000 polar bears worldwide.Modem methods_63__ tracking polar bear populations have been employed only since the mid-1980s, and are expensive _64__ (perform) consistently over a large area. In recent years some Inuit people in Nunayut _65_ (report) increases in bear sightings around human settlements, leading to a _66_ (believe) that populations are increasing. Scientists have responded by _67_ (note) that hungry bears may be congregating(聚集) around human settlements, leading to the illusion(错觉) that populations are_68_ (high) than they actually are. Of _69_ nineteen recognized polar bear subpopulations, three are declining, six _70__ (be) stable, one is increasing, and nine lack enough data.Later, engineers ____68___(manage) to construct railways in a system of deep tunnels (隧道）, which became known to thetube. This development was only possible with the ___69___ (introduce) of electric-powered engines and lifts. The central London Railway was one of the most ___70___(success) of these new lines, and was opened in 1900. It had white-painted tunnels and bright red carriages, and proved extremely popular with the public.6.（2017全国Ⅲ）阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。She looks like any other schoolgirl, fresh-faced and full of life. Sarah Thomas is looking forward to challenge of her new A-level course .But unlike school friends ,16-year-old Sarah is not spending half-term______(rest). Instead, she is earning 6500 a day as______model in New York.Sarah______(tell) that she could be Britain’s new supermodel earning a million dollars in the new year. Her father Peter44,wantsher to give up school to model fulltime But Sarah,______has taken part in shows along with top models wants______(prove) that she has brains as well as beauty. She is determined to carry on with her______(educate).She has turned down several______(invitation) to star at shows in order to concentrate on her studies After school she plans to take a year off to model full time before going to university to get a degree______engineering or architecture.Sarah says, "My dad thinks I should take the offer now. But at the moment, school______(come) first. I don't want to get too absorbed in modeling. It is______(certain) fun but the lifestyle is a little unreal. I don't want to have nothing else to fall back on when I can't model my more."7.（2016全国Ⅰ）阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。Chengdu has dozens of new millionaires, Asia’s biggest building, and fancy new hotels. But for tourists like me, pandas are its top______(attract).So it was a great honour to be invited backstage at the not-for-profit Panda Base, where ticket money helps pay for research, I______（allow）to get up close to these cute animals at the 600-acre centre. From tomorrow, I will be their UK ambassador. The title will be __63______(official) given to me at a ceremony in London. But my connection with pandas goes back ______ my days on a TV show in the mid-1980s, ______I was the first Western TV reporter______ (permit) to film a special unit caring for pandas rescued from starvation in the wild. My ambassadorial duties will include ______(introduce) British visitors to the 120-plus pandas at Chengdu and others at a research in the misty mountains of Bifengxia.On myrecent visit, I help a lively three-month-old twin that had been rejected by______(it) mother. The nursery team switches him every few ______( day) with his sister so that while one is being bottle-fed, ______ other is with mum-she never suspects.8.（2016全国卷Ⅱ）阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。If you feel stressed by responsibilities at work, you should take a step back and identify（识别）those of______(great) and less importance. Then, handle the most important tasks first so you'll feel a real sense of______(achieve). Leaving the less important things until tomorrow______(be) often acceptable.Most of us are more focused______our tasks in the morning than we are later in the day. So get an early start and try to be as productive______possible before lunch. This will give you the confidence you need to get you through the afternoon and go home feeling accomplished.Recent______(study) show that we are far more productive at work if we take short breaks______(regular). Give your body and brain a rest by stepping outside for______while, exercising, or doing something you enjoy.If you find something you love doing outside of the office, you'll be less likely______(bring) your work home. It could be anything, gardening, cooking, music, sports—but whatever it is,______(make )sure it's a relief from daily stress rather than another thing to worry about.9.（2016全国卷Ⅲ）阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。In much of Asia, especially the so-called “rice bowl” cultures of China, Japan, Korea,______Vietnam, food is usually eaten with chopsticks.Chopsticks are usually two long, thin pieces of wood or bamboo. They can also be made of plastic, animal bone or metal. Sometimes chopsticks are quite artistic. Truly elegant chopsticks might______(make)of gold and silver with Chinese characters. Skilled workers also combine various hardwoods and metal______(create)special designs.The Chinese have used chopsticks for five thousand years. People probably cooked their food in large pots,______(use) twigs(树枝) to remove it. Over time,______the population grew, people began cutting food into small pieces so it would cook more quickly. Food in smallpieces could be eaten easily with twigs which______(gradual)turned into chopsticks.Some people think that the great Chinese scholar Confucius,______lived from roughly 551 to 479 B.C., influenced the______(develop) of chopsticks. Confucius believed knives would remind people of killings and______(be) too violent for use at the table.Chopsticks are not used everywhere in Asia. In India, for example, most people traditionally eat______0______their hands.10.（2015全国Ⅰ）阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。将答案填写在答题卡的相应位置。Yangshuo, ChinaIt was raining lightly when I______(arrive) in Yangshuo just before dawn. But I didn’t care. A few hours______, I’d been at home in Hong Kong, with______(it) choking smog. Here, the air was clean and fresh, even with the rain.I’d skipped nearby Guilin, a dream place for tourists seeking the limestone mountain tops and dark waters of the Li River______are pictured by artists in so many Chinese______(painting). Instead, I’d headed straight for Yangshuo. For those who fly to Guilin, it’s only an hour away______car and offers all the scenery of the better-known city.Yangshuo______(be) really beautiful. A study of travelers______(conduct) by the website TripAdvisor names Yangshuo as one of the top 10 destinations in the world. And the town is fast becoming a popular weekend destination for people in Asia. Abercrombie & Kent, a travel company in Hong Kong, says it______(regular) arranges quick getaways here for people______(live) in Shanghai and Hong Kong.11.（2015全国卷Ⅱ）阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。The adobe dwellings (土坯房)______（build）by the Pueblo Indians of the American Southwest are admired by even______most modern of architects and engineers. In addition to their simple beauty, what makes the adobe dwellings admirable is their______(able) to “air condition” a house without______( use) electric equipment. Walls made of adobe take in the heat from the sun on hot days and give out that heat______( slow) during cool nights, thus warming the house. When a new day breaks, the walls have given up their heat and are now cold enough______(cool) the house during the hot day;______the same time, they warm up again for the night. This cycle______(go) day after day: The walls warm up during the day and cool off during the night and are thus always a timely offset(抵消) for the outside temperatures. As______(nature) architects, the Pueblo Indians figured out exactly______thick the adobe walls needed to be to make the cycle work on most days.12.（2014全国卷Ⅰ）阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。Are you facing a situation that looks impossible to fix?In 1969,the pollution was terrible along the Cuyahoga River Cleveland, Ohio. It__61____（be）unimaginable that it could ever be cleaned up. The river was so polluted that it ____62____(actual)caught fire and burned. Now, ears later, this river is one of _63___most outstanding examples of environmental cleanup.But the river wasn’t changed in a few days __64____even a few months. It took years of work__65______(reduce ) the industrial pollution and clean the water. Finally, that hard work paidoff and now the water in the river is___66_____(clean) than ever.Maybe you are facing an impossible situation. Maybe you leave a habit __67___is driving your family crazy. Possibly you drink too much or don’t know how to control your credit card use. When you face such an impossible situation ,don’t you want a quick fix and something to change immediately?While there are ___68_______(amaze) stories of instant transformation, for most of us the___69_______(change) are gradual and require a lot of effort and work, like cleaning up a polluted river. Just be______(patience)13.（2014全国Ⅱ）阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。One morning, I was waiting at the bus stop, worried about __41___ (be) late for school.There were many people waiting at the bus stop, ___42____ some of them looked very anxious and ___43__(disappoint) . when the bus finally came, we all hurried on board. I got a place next ____44___ the window, so I had a good view of the sidewalk. A boy on a bike ____45___ (catch ) my attention. He was riding beside the bus and waving his arms. I heard a passenger behind me shouting to the driver, but he refused ____46___(stop) until we reached the next stop. Still, the boy kept ____47___(ride). He was carrying something over his shoulder and shouting. Finally, when we came to the next stop, the boy ran up the door of the bus. I heard an excited conversation. Then the driver stood up and asked,“____48___ anyone lose a suitcase at the last stop?” A woman on the bus shouted, “Oh, dear! It ‘s ____49___ (I )”. She pushed her way to the driver and took the suitcase thankfully. Five others on the bus began talking about what the boy had done and the crowd of strangers______(sudden) became friendly to one another.