My name is Richard Terry. I'm a soil scientist and science professor at Brigham Young University, in Provo, Utah.

    I grew up on a farm in Idaho, but I didn't want to become a farmer. Milking cows every morning before school and every afternoon after school forced me to go to university and become a scientist. I enjoyed my science courses at university, but once I saw the application of chemistry, math and physics in soil science, I knew that was what I wanted to focus on in my career.

    In my eyes, working as soil scientists is important. We often do some research on soil and sand, which is very useful for planting and farming. In the field, my students and I use shovels, trowels(泥刀) and drilling devices to collect soil samples. In the laboratory, we use chemicals to collect nutrients that were left on the soil surface by ancient people.

    Since 1997, we've been studying the soils of ancient Maya settlements in what is now Guatemala. We set about looking for ancient waste piles that were left from food processing and waste disposal(废物处理)by the Maya. The organic matter has rotted and been lost from the soil. However, phosphorus(磷), has been adhered to soil, where it has remained for thousands of years. We then used these techniques to determine the locations of ancient kitchens and workshops. One of those workshops was used to make polished mirrors that the King of Aguateca wore when performing ceremonies. Archaeologists found carved stones in that workshop that were once part of the king's crown. We then started to examine the soils of large public shopping centres to find chemical remains of ancient marketplace activities. We are currently examining the organic matter of the soil to find the remains of ancient corn plants. This is of great use to help us to determine where corn was grown.  

2019年国庆前夕，中国女排以十一连胜的成绩成功卫冕世界杯冠军，第十次荣膺世界排球“三大赛”冠军。10月1日，中国女排姑娘们登上“祖国万岁”花车，在庆祝新中国成立70周年群众游行队伍中压轴亮相。

1981年至1986年，中国女排在世界杯、世锦赛和奥运会．上蝉联世界冠军，成为世界女子排球第一支连续五次夺魁的队伍。

中国女排顽强拼搏、为国争光的精神，激励无数国人在中华民族伟大复兴的道路上奉献自己的光和热。

石碑无声

安谅

井冈山云遮雾绕，细雨绵绵。我们从茨坪镇红军南路出发，沿山路逶迤而下，车行约4公里，就到了半山区地势较低，海拔400多米的一个平坦洼地，这就是五井中“小井”了。

云雾缭绕之中，群山环抱之间，满目峰峦叠嶂。有溪水淙淙流过，令这一片天地更显秀美。蓦地，就见到前方一栋古色古香的楼房了，坐北朝南，全木结构，质朴得如同普通山民的居屋，但又有一股子庄重的特质，令人肃然起敬。

那是1928年的秋天，红四军在三湾整编之后，与国民党反动军队的战斗频繁而激烈，伤病员自然也增多。为此，毛泽东决定在小井建造一座医院，经过红四军党代会审议通过后，就开始了兴建工作。红军官兵纷纷倾囊相助，他们的钱款是自己的零用钱，还有从每天菜金结余中分得的本来就微薄的部分，当时就叫做“伙食尾子”。费用不够，大家都投身建设工作，用心出力，就地取材，短短两个月的时间，想方设法，克服困难，把一个大约900平方米，上下共两层的楼房迅速建成了。这就是红军第一家医院，也是我军历史上第一所正规的医院。就是在这样一个狭小、潮湿，条件十分艰苦的地方，成百上千的红军伤病员在此疗伤。

有一张年轻人的相片，挂在屋内的墙壁上，深深地吸引了我们。走近一看，影像虽然略显模糊，但相片的年轻人抿着嘴唇，目光坚定，英气逼人。这活脱脱一个小帅哥！还来不及我们想象，相片下方简短的文字，已让我们屏气凝神，什么话都说不上来了。及至讲解员生动地述说后，我们的眼眶已满含热泪。这位毛泽东极为赏识的红四军第十一师师长，叫张子清。他作战英勇，有才有识。在一次战斗中，脚踝部中了弹，由于毫无医疗条件，子弹不仅没能及时取出，伤口也发生了严重的溃烂，他不得不住进了红军医院，设法治疗。但当时缺医少药，特别是消炎用的药水一滴都找不到了。医生在用竹镊取夹他骨肉深处的子弹，也没有一点麻药，他紧咬着牙，浑身衣裤都被汗水湿透了，但他不吭一声。最终，子弹还是未能取出，伤口仍如刀割一样的痛。有战友来探望，给了他一小包食盐。他舍不得用，把食盐包珍藏在自己的枕头底下。在伤口痛得实在难以忍受时，他才用手去摸一摸盐包，手指象征地再轻抚一下伤口。他知道食盐太宝贵了，他不想自己就这样用掉了。

果然不久，有重伤员被送进了医院，手术时急需食盐消毒。张子清二话没说，就从枕头底下掏出了这包食盐，坚决地塞进了医生的手里。医生看着他已严重感染的伤腿，不忍接受。他沉下了脸：“抢救重伤员要紧！”执意让医生拿走了食盐。

张子清的伤口进一步大面积感染，最终危及生命，停止了呼吸。那一年他还不到而立之年。面对他安详的面容，被抢救过来的重伤员哭了，医生护士们哭了，红军战士们都哭了……而此刻，面对他年轻英俊的面容，我们在新中国长大的这些人，怎能不心有触动，心怀感动呢？他还只是一个半大的小伙子呀，却为了信仰和事业，早早地献出了生命！人和人，究竟怎么比，人的生命，究竟又用什么来衡量？

步子沉重，心更沉重，站在这不足20平米的墓地前，我又一次经受了心灵的震撼。这墓地80多年前还是一片稻田，这里面竟埋葬了130多位红军战士的忠魂，虽然，遗骨并不完全，130多位战士，也只有18人如今还有名有姓。大多数人，无名，甚至无骨，永远长眠在这片红土地上。其中有一位只有14岁！

事发1929年1月29日。在黄洋界战斗中失败的敌军，买通一位当地游民，由他作向导，偷偷绕过哨口，直奔小井进行突袭。红军医院的重伤员和医护人员手无寸铁，仍进行了顽强的抵抗。但敌我力量过于悬殊，伤员们被驱赶到了这片稻田里，敌军烧了医院，还对伤员们严刑拷打，威逼利诱，让他们说出红军的去向。寒风凛冽刺骨，敌军的蹂躏也无所不用其极，但红军战士昂首挺胸，像一尊尊不倒的铜像，怒视着敌人。敌军气急败坏，竟然架起了机枪，向他们拼命扫射。在这最后关头，战士们还用尽全身力气，齐声高喊：“中国共产党万岁！”鲜血染红了小溪，染红了大地，映红了树木，也映红了天空。

讲解员娓娓讲述着，哽咽着，晶莹的泪水在脸上流淌。我们的热泪也从眼眶溢出，滚落在双颊。我想起了来小井之前读到的一首当地歌谣：“要吃辣椒不怕辣，我当红军不怕杀，茅草过火不断根，春风一吹万万千。”想起了仅仅两年多时间，在井冈山牺牲的4万多位共产党人和红军战士。还有那位令人可敬可亲的母亲曾志，她最早就在红军医院工作。她一生历经磨难，但从未失去过对党的忠诚。她说：“我对我选择的信仰至死不渝，我对我走过的路无怨无悔！”临终前，她还再三叮嘱：“我的遗体送医院解剖，有用的留下，没用的火化……”她的坟墓就在小井红军医院附近的山坳上，她是魂归小井呀！

我们站在墓前，向先烈们充满崇敬地行了三鞠躬，又缓缓走近墓地，虔诚地献上了一支支洁白的花朵。

同行中有人问这位名叫姚王珍的讲解员：“你天天在这里讲解，天天这样动情吗？”

她扬起脸，坚决地说道：“是的！因为他们是最有信仰的人，我也是红军的后代！”

苍松挺立，烈士无名，石碑无声。

小井是多么安宁和平静。我听得见自己的心脏在怦怦跳动。从山涧里蜿蜒奔泻的小溪，仿佛在述说着什么，是的，它告诉了我们许多许多。

阳光乍现，云雾正在散去，雄伟奇峻的井冈山愈显峥嵘……

（2）在标准状况下，8.96L的H₂X气体含有a个氢原子，则阿伏加德罗常数可表示为　 　（用含a的式子表示）；若其质量为13.6g，则X的相对原子质量为　 　．

（3）含13.8g Na⁺的Na₃PO₄溶液100mL，PO₄^3﹣的物质的量浓度为　 ，取出1mL，Na₃PO₄的物质的量浓度为 

    While driving home after work, Jane Hodgson noticed a car pulled over at the side of the road and a crowd beginning to gather around someone who was lying on the ground.

    Jane, who had completed a first aid at work course, pulled over to see if she could offer any help — and it turned out to be lucky for the young injured girl that she did.

    Describing the scene she came across, Jane says: "The onlookers were ashen-faced and looking lost. They were so shocked that they hadn't even thought to call for an ambulance yet."

    After speaking to the emergency services, Jane started finding out what had happened and what injuries the young girl called Jenny had. The girl had been hit by a car and gone over the handlebars of her bike, landing on her head and shoulder. Her shoulder and arm were twisted underneath her.

    "She hadn't been wearing a helmet when she got knocked down, and I thought that she should not be moved as I couldn't be sure about a spinal injury (脊椎损伤), but after looking her over and checking the circulation in her injured arm I did feel fairly confident that she had escaped relatively unhurt.

    "As we were waiting for an ambulance, the amount of pain the girl was in was increasing. To distract (分散注意力) her and minimize the risk of her going into shock I kept her talking. She held my hand tightly when the pain got too much and this helped. I told her I could handle it — we laughed about that," describes Jane.

    Later, a doctor from the local hospital's ICU stopped at the scene too. The ICU doctor decided that Jenny should lie on her back, making her much more comfortable until the emergency services arrived.

    Thinking back, Jane says: "For me, knowing that in a small way I helped that girl through what was a frightening experience is all the reward I need. I felt great to know I'd made a difference and I'd do it again."

京剧与连环画表现手法不同、创作风格各异、受众对象也不尽相同，①。比如，在艺术选材上，都高度重视对中国传统历史、故事、传说、轶事的发掘和演绎一连环画中的很多故事也是京剧的经典曲目。再比如，② ， 京剧和连环画几乎都以褒扬真善美、鞭策假丑恶为思想基调；③ ， 但对纷繁世事、人心善恶、是非曲直的看法是一致的。

    When we read books we seem to enter a new world. This new world can be similar to the one we are living in, or it can be very1. Some stories are told 2 they were true. Real people who live in a 3 world do real things; in other words, the stories are about people just like us doing what we do. Other stories, such as the Harry Potter books, are not 4 . They are characters and creatures that are very different from us and do things that would be 5for us.

But there is more to books and writing than this. If we think about it, even realistic writing is only 6. How can we tell the difference between what is real and what is not real? For example, when we read about Harry Potter, we7 seem to learn something about the real world. And when Harry studies magic at Hogwarts, he also learns more about his real life than8. Reading, like writing, is an action. It is a way of 9 . When we read or write something, we do much more than simple look at words on a page. We use our 10--which is real—and our imagination—which is real in a different way — to make the words come to life in our minds.

    Both realism and fantasy(幻想) 11 the imagination and the “magic” of reading and writing to make us think. When we read 12realistic, we have to imagine that the people we are reading about are just like us, even though we13   that we are real and they are14. It sounds 15 , but it works. When we read, we fill in missing information and16 about the causes and effects of what a character does. We help the writer by 17 that what we read is like real life. In a way, we are writing the book, too.

    Most of us probably don't think about what is going on in our18 when we are reading. We pick up a book and lose 19   in a good story, eager to find out what will happen next. Knowing how we feel20 we read can help us become better readers, and it will help us discover more about the real magic of books.

—The (移民入境).

60％的同学认为

1）不应该收门票

2）公园是公众休闲的地方

3）如收门票，需建大门、围墙，会影响城市形象

40％的同学认为

1）应收门票，但票价不要太高

2）支付园林工人工资

3）购新花木

注意：1）信的开头已为你写好。

2）词数：100左右。

3）参考词汇：门票—entrance fee

Dear Editor,

    I'm writing to tell you about the discussion we have had about whether an entrance fee should be charged for parks. ……

 1）.回复他的要求；

 2）.询问他到达的具体时间，呆多久，以便你作具体安排。

注意：

①词数100左右；

②可适当添加细节，使行文连贯；

③开头和结尾已经给出，不计入总词数。

Dear Mark,

    ……

 Yours

  Li Hua

大禹梳理百川，班超投笔从戎，李时珍悬壶济世，林则徐虎门销烟……每当中华民族处于艰难之际，总有一大批志士仁人挺身而出，   ▲   ， 解民众于水火，挽狂澜于既倒。野火沃土，   ▲   ， 中华五千年文明史就是一部   ▲   ， 的奋斗史。