If you show you (意识到) cultural differences, most Americans will not worry about answering your questions.

阅读下面的文字，完成下面小题。

材料一：

“我们锐意改革，打造林业产业发展的4.0版。”广东观音山国家森林公园开发有限公司董事长黄淦波介绍，靠“卖山头”“砍树”是林业产业发展的初级阶段，即1.0版；保护森林即“看树”，靠政策补助生存，这是2.0版；通过发展森林旅游，即通过“生态”“景观”获得经济效益，这是3.0版；而观音山通过“文化”“品牌”获得可持续发展，是林业产业转型升级的4.0版。

在我国，近50%的森林公园位于贫困地区或者生态脆弱地区，为当地提供了广阔的就业增收渠道。当地一位退休干部告诉记者：“正是有观音山这么一片大森林，樟木头镇得到了国家生态宜居示范乡镇等不少荣誉称号，吸引了许多人在此投资置业。”

尽管我国森林公园的改革发展取得了令人瞩目的成就，但交通等基础设施条件还比较落后，经营管理水平仍然不高，综合效益没有得到充分发挥。观音山国家森林公园也面临着这些难题。黄淦波说，下一步将充分发挥民营资本灵活、创新的特点，用改革创新践行好“绿水青山就是金山银山”的理念。

（摘编自《从“门票经济”到“文化经济”》）

材料二：

中共中央办公厅和国务院办公厅近日印发《天然林保护修复制度方案》。21日，国新办举行新闻发布会，国家林业和草原局介绍天然林保护工作有关情况。

国家林草局副局长李树铭表示，为贯彻落实好方案的部署和要求，将采取更高级别的保护，加强天然林管护站点、管护网络、灾害预警体系、护林员队伍和共管机制的建设。实行最严格的管制。全面停止天然林商业性采伐，对于纳入保护重点区域的天然林，禁止生产经营活动。开展抚育作业的，必须编制作业设计。严管天然林地占用，严格控制天然林地转为其他用途。

同时实施更全面的修复。根据天然林演替和发育阶段，科学实施修复措施，遏制天然林分退化，提高天然林质量。逐步使天然次生林、退化次生林等生态系统恢复到一定水平。鼓励在废弃的矿山、荒山荒地上逐步恢复天然植被。还要落实更严密的监管。加大天然林保护年度核查力度，将天然林保护修复成效作为地方党委和政府及领导干部综合评价的重要参考。建立天然林资源损害责任终身追究制。

据介绍，我国的天然林保护工作从1998年开始试点，到今年年底，投入天然林保护资金4000多亿元，取得显著成效。天然林资源恢复性增长持续加快，全国天然林面积净增4.28亿亩、蓄积净增37.75亿立方米。

（摘编自《天然林保护－修复更全 监管更严》）

材料三：

20世纪上半叶，受战争和经济开发的影响，波兰的森林受到了巨大的破坏。二战后，波兰开始了森林的恢复工作。从上世纪90年代开始，波兰加强立法以保护森林，通过了《森林法》《保护森林和农业土壤法》《森林再生材料法》《环境保护法》等法案。目前波兰已经建立了1200处自然保护区，其中森林占保护区面积的54%。经过多年的努力，波兰的森林覆盖率已恢复至30%左右，接近全球森林覆盖率的平均水平。

此外，波兰政府鼓励教育、文化部门和新闻媒体参与环境保护的宣传，并在中小学内开设环保课程，每年都进行全国性的中小学生环保知识竞赛，让孩子们从小树立环保意识。各类民间组织也在森林保护中发挥了重要作用。目前波兰国内有1000多个非官方的生态小组对各地的生态情况进行监督，并根据所掌握的情况向有关部门提供咨询。在坎皮诺斯国家森林公园中，不时能看到森林保护团体进行义务环保宣传。

（摘编自《波兰注重平衡森林保护和利用》）

若a_ij表示n×n阶矩阵 中第i行、第j列的元素（i、j=1，2，3，…，n），则a_nn= （结果用含有n的代数式表示）．

阅读理解

Voyages By Neil Waldman Travel with young Abe Lincoln down the Mississippi River, taking his boat down to New Orleans. Along the way, Lincoln finds himself on his own voyage of discovery. It is an amazing experience with risk and excitement.(Chapter book)

Through Georgia's Eyes By Rachel Rodriquez and Julie Paschkis Discover the wideness and wonder of deserts and rivers through the eyes of painter Georgia O'Keefe. Deep-colored paper paintings show the artist's imagination and the amazing sightseeing that inspired her work. (Picture book)

A Horn For Louis By Eric A. Kimmel and James Bernardin Louis Armstrong was too poor to have a real music instrument, but he had a horn(喇叭). Jazz and blues music was everywhere in the streets of New Orleans. This is the story of how Louis got his first real "horn", when he was just a boy with a dream of becoming a musician. (Chapter book)

Go, Go America By Alan Barnard 50 states of fun, with interesting facts — in what state the entertainment capital of the world is, where the first hamburgers were served, what the Cereal Festival is, who hosts the Hog Calling Contest and more.(Picture book)

Finally the slave trade was       in 1807.

The practice of law requires (了解)with court procedures.

假定英语课上英语老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（﹨）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1).每处错误及其修改均限一词。

      2).只允许修改10处，多者（从第11处起）不计分。

    I was in the college when my father passed away. One evening, a man visited me and after a while, he asked of my studies. I told him I could not go to college so I did not want to study anymore. He reminded how my father had sent me to the best college in our city. Did I want to fulfill his father's dream or did I want to be calling a failure? I wept and said I do want to do my best and I just couldn't concentrate. He gave me all the encouragements I needed to be able to carry on. His calming, gently voice did wonders and I decided to study harder and complete my graduation early.

阅读下面的文字，完成各题。

中医药作用是此次新冠肺炎疫情防控一大亮点。中医一般指以中国汉族劳动人民     的传统医学为主的医学。2018年10月，世界卫生组织首次将中医纳入其具有全球影响力的医学纲要。

中医治病常用中药，中药的概念讲究“气”。这个“气”是个多义词，常特指“药性”，我们的先祖用寒、热、温、凉来诠释药的特性，是为“四气”。中医还有“补脏气”之说。这个“补”是调理、增强的意思，“气”则指生理功能，“补脏气”即指用药物来调理、增强五脏六腑的生理功能。《神农本草经》中把药分为上、中、下三品，并说：“上药养命，中药养性，下药治病。”所谓“养命”“养性”，都是突出了中药调养人体的____，这就是许多人信奉中药的原因之一。中药的这种特性，一一体现在每一味药中，认识这种特性对于疗疾治病十分重要。对于寒病就要用热性药，对于热病就要用寒性药，这里药性与病性是相逆的，所谓____，就是药文化的一种具体表现。反之，如果“以热益热，以寒增寒”，就会导致“精气内伤，不见于外”，这是治疗上的____。由此可见，(    )

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。  

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的回下划一横线，并在该词下面写出修改后的词。

注意：1）．每处错误及其修改均仅限一词；

2）．只允许修改10处，多者(从第11处起)不计分。

    Trying to come to a decision complete on your own can be risky. Some decisions are very important that they shouldn't made without talking to others first．There have several advantages if you consult the persons you trust．For one thing，they can give you valuable，advice and they may point out some things you may have been overlooked．For another，friends may stop，you making big mistakes.

    When consult others about important decisions，you should keep two things on mind．The first one is that you need to find someone whom you respected enough to trust his or her judgment. The second thing to consider is how to do if you disagree with this person．Maybe turning to a third or fourth person for help is a good choice. In a word，making any big decision alone can lead to problems. Talking to friends or family members first are always a good idea．

Because I have no friends and (亲戚) in London, I don't know whom I should turn to.

图是某有机物分子的比例模型（填充模型），其中“○”表示氢原子，“●”表示碳原子，“ ”表示氧原子，该有机物的结构简式是（　　）

常温常压下，用等质量的CH₄、CO₂、O₂、SO₂分别吹出四个气球，其中气体为CH₄的是（   ）

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    Here, sleep experts clear up some of the biggest misunderstandings about sleep they see with their patients, which could weaken your ability to have a night of good sleep.

Myth:

    The latest research shows that the right amount of sleep may vary from person to person and should leave you feeling energized the next day. I'm a sleep doctor. Take myself for example. .

Myth: Don't fall asleep with the TV on.

    I've cured more people suffering from sleep problems than you can imagine by telling  people it's OK to fall asleep with the TV on. Control the watching time so it doesn't affect your sleep later in the night.

Myth: You can catch up on lost sleep on the weekend.

    A Harvard study found that even if you sleep for an extra 10 hours on the weekend to make up for only sleeping six hours a night for two weeks, those extra hours won't improve  your reaction times or ability to focus. Plus, sleeping late throws off your biological clock, which can lead to obesity, diabetes, and heart disease.

Myth: Alcohol can help you rest easy.

    Alcohol may relax you so you nod off quicker, but studies show you'll wake up more and get less of deep sleep you need to feel rested.

A. You need 8 hours' sleep a night. B. A lack of sleep can cause anxiety. C. We take unscheduled naps during the weekend. D. I've been a 6.5-hour sleeper my entire adult life. E. Many people can't turn off their brains, but watching TV helps. F. People commonly use alcohol to fall asleep, but it doesn't work. G. You can't make up for too little sleep by sleeping more at weekends.

阅读理解

    Check out some fun weekend activities from our friends at Arizona Parenting.

    Walk in the Wild: Walk or run for wildlife at the Phoenix Zoo's Walk in the Wild 2016. Put on your favorite animal dress and take part in the one mile or 5K,enjoying the sights and sounds of the Zoo. Walk in the Wild includes a morning full of unique activities you won't find at any other valley walk, including all-day zoo admission and a lakeside after-party. Register online. 6-10 am. Phoenix Zoo, 455 North Galvin Parkway, Phoenix. 602-286-3800.

    Free Museum Day: It is hosted by Sesame Street and HBO at the Children's Museum of Phoenix. Kids can participate in activities, enjoy a performance by the Sesame Street Muppets and get to join the Everyday Heroes Club. An act of kindness is all it takes to become a member. Performances and activities will take place at 10:30—11:30 am and 1:30—2:30 pm.9 am—4 pm. Children's Museum of Phoenix, 215 N. 7th street, Phoenix. 602-253-0501.

    Sunday A'Fair: Sunday A'Fair features free outdoor concerts in Scottsdale Civic Center Park by top Arizona musicians, along with an arts-and-crafts market, fun activities for children and families, guided tours of the sculptures in the park and free admission to Scottsdale Museum of Contemporary Art (SMoCA). Guests are invited to bring blankets, lawn chairs or picnic baskets, and enjoy a relaxing afternoon of great entertainment. Delicious foods, snacks, beer, wine and soft drinks are also available for purchase.12-4 pm. Scottsdale Center for the Performing Arts, 7380 E. 2^nd St., Scottsdale. 480-994-ARTS (2787).

You may have one of these；in other words，you may have ________you choose.

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(\)划掉。

修改：在错的词下划一横线, 并在该词下面写出修改后的词。

注意:1）每处错误及其修改均仅限一词;

2）只允许修改10处，多者(从第11处起)不计分。

    Recently, our school has held the meaningful discussion on whether it is necessary for middle school students to have classes on weekends. Some of our classmates believe we should have classes on weekends, because we can make fully use of the free time to review the lessons we had learnt. Some others are against the opinion, saying we had better to have a good rest on weekends so that we can work effective during the weekdays. The rest agree with neither of the opinion. Keep the balance between work and play are both important for us. They suggest one day of the weekend should used to learn our lessons and during the other day we do something interested or have a rest.

如图所示，一密闭气缸被一不漏气但可滑动的活塞隔开分成两部分。反应前，左边充有N₂ ， 右边充有H₂、O₂的混合气体；20℃时，将右边混合气体点燃，反应后冷却到20℃，若活塞最终静置于气缸的中央（液体体积忽略不计）。则反应前容器中N₂和O₂的物质的量之比可能为（   ）

She had no money ________ a birthday present for her children.

用N_A表示阿伏加德罗常数，下列说法中正确的有（   ）

根据问题进行计算：