2021届高考英语大一轮复习Unit22EnvironmentalProtection课时作业22a北师大版选修8 练习

课时作业22　Environmental ProtectionⅠ.课标单词写作词汇——————————————明其义1．recycle vt.回收利用2．threaten vt.威胁3．substitute n．代替品，代用品4．seize vt.依法没收；(用武力)夺取5．means n．方法6．trap vt.使困住7．carve vt. & vi.雕刻8．slide vi.滑行9．potential n．可能性，潜在性10．roll vi.(平稳地)移动，滚动11．politics n．政治(活动)12．behalf n．代表13．flee vt. & vi.逃走14．mountainous adj.多山的15．arm vt.武装阅读词汇——————————————悉其用1．advocate vt. 主张，提倡2．botanical  adj. 植物的3．consultant n. 顾问4．boycott n. (联合)抵制5．rough adj. 艰难的6．ecology n. 生态7．principle n. 原则；道德准则8．catastrophe n. 巨大的灾难9．coincidence n. 巧合10．sacrifice vt. & vi. 牺牲；献出11．negative adj. 消极的，负面的12．considerate adj. 想得周到的，体贴的13．finance n. 资金14．allocate vt. 分配，配给15．evolution n. (生物)进化拓展词汇———————————————————通其变1．dust n．灰尘，尘土→dusty adj.多灰尘的2．coincidence n．巧合→coincident adj.一致的，巧合的3．separation n．分离，分开→separate vt.分离，分开 adj.分开的→separately adv.分开地4．adopt vt.采用；收养→adoption n．采用；采纳；收养5．reserve n．保护区→reservation n．保护6．agriculture n．农业→agricultural adj.农业的7．relevant adj.有关的→irrelevant (反义词)adj.不相干的8．construct vt.建造→construction n．建造；建筑9．considerate adj.想得周到的，体贴的→consideration n．考虑；思考→consider vt.思考，考虑→considering prep.考虑到；鉴于10．sharpen vt. & vi.削尖→sharpener n．卷笔刀→sharp adj.锋利的；尖锐的；敏锐的11．change vt.改变→changeable adj.多变的12．irrigation n. 灌溉→irrigate vt.灌溉语境活用———————————(用所给单词的适当形式填空)1．The senator urged against the adoption (adopt) of the measure.2．The world is changeable,_and everything is changing.(change)3．Henry was forced to leave his motherland for political (politics) reasons.4．A new bridge is being constructed over the river and its construction will be finished next year.(construct)5．It is not safe to let the child sharpen (sharp) his pencil.6．My calculation (calculate) is based on notional figures, since the actual figures are not yet available.7．Considering his young age, it is quite considerate of him to consider other people before making decisions.(consider)8．After a long separation,_they separated peacefully.(separate)9．Even in advanced agricultural (agriculture) societies, it took about ninety­five people on farms to feed five people in cities.10．Some members of the committee expressed reservations (reserve) about the proposal. 
Ⅱ.课标短语短语速记——————————————1．earn_one's_living 谋生2．as_a_matter_of_fact 实际上3．look_ahead 展望未来，向前看4．result_in 导致5．break_away_from 摆脱；脱离6．a_number_of 一些7．beyond_one's_control 超出某人的控制8．take_action 采取行动9.sum up  总结，概括10．on somebody's behalf 代表……11．lead to 引起，导致12．ahead of time 提前13．answer for (对已产生的不良后果)负责任14．carry off 掠去，夺走15．in turn  依次，轮流16．all in all 总之17．apart from 除……之外语境活用—————————————(选用上面的短语填空)1．Your attitude affects others which in_turn affects you.2．Look_ahead in the distance, and you can see the lights of the village.3．It was his carelessness that led_to his failure in the exam.4．Apart_from the injuries to his face and hands, he broke both legs.5．Thieves carried_off the farmer's sheep during the night.6．I was encouraged to break_away_from old forms and rules.7．If you go on doing this, we won't answer_for the consequence.8．I thought we'd be late for the concert, but we ended up getting there ahead_of_time.9．A_number_of students were absent from the meeting for various reasons.10．All_in_all,_every road leads to Rome, but I do believe hard work pays off. Ⅲ.重点句型教材还原————————————————1．Looking_ahead,_scientists believe that global warming could be one of the biggest environmental problems facing the 21st century.展望未来，科学家们认为全球变暖是21世纪所面临的最大的环境问题之一。2．Without these naturally occurring gases, the sun's rays would_bounce back into space leaving the Earth cold and impossible to live on.如果没有这些自然产生的气体，太阳光将会被反射回太空中去，使地球处于寒冷之中，而且不适合居住。3．Given_this_data,_it seems that the link between human activities and rising global  temperatures is not merely a coincidence.鉴于这些数据，人类活动与正在升高的地球温度之间的联系好像并不仅仅只是巧合而已。4．The_last_few_years_have_seenenvironmental disasters on a grand scale, and experts are predicting far worse to come.近几年一些环境灾难大规模地出现，专家们预测更坏的局面即将来临。5．If we add up all these small changes made_by_everyone_worldwide,_they won't be such small changes.如果我们把全世界每个人所创造的小改变叠加起来，那将不再是小变化。 写作运用——————————————1．Looking_ahead，he decided to stick to his present job.展望未来，他决定坚持做目前的工作。2．Without the air to hold some of the sun's heat, the earth at night would_be_freezing_cold,_too cold for us to live on.如果没有大气保持太阳的热量，夜晚的地球将会非常寒冷，冷得让我们无法生存。3．Given_their_inexperience,_the Chinese women's synchronized swimming team has done well.考虑到她们缺乏经验，中国女子花样游泳队已经做得很好了。4．The_last_ten_years_have_seen the rapid development of China.过去10年见证了中国的快速发展。5．The sandwiches made_by_my_mother are very delicious.我妈妈做的三明治很好吃。  
Ⅳ.语篇整合话题与语篇填空——————————————In the last few decades, scientists have reported that human beings are causing changes in the Earth's climate, which was considered 1.beyond our control. But what exactly is global warming, and how is it relevant 2.to our lives? Global warming 3.refers (refer) to an average increase in the Earth's temperature that, in turn, leads to climate change. Scientists found that the temperature of the Earth is controlled by greenhouse gases. Without these naturally occurring gases, the sun's rays 4.would_bounce (bounce) back into space leaving the Earth cold. The global average temperature has increased by 1 over the last 100 years. Many experts insist that the blame for this global warming can mostly 5.be_pinned (pin) on human activities. If we continue to produce more carbon dioxide and other gases，we 6.are_condemning (condemn) life on Earth and should face terrible climate changes, serious diseases and bad effects on some industries as well as the 7.rising (rise) sea levels. How can we stop these disasters happening? Governments all over the world have a responsibility 8.to_reduce (reduce) carbon dioxide. Even every average person can play their part. They can make small changes like taking public transport, 9.recycling (recycle), using low­flow shower heads, 10.which can be added up to save our future. After all, there's no substitute for our Earth.话题与短文改错————————————