首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、It helps to produce silk. B、It provides food for human. C、It creates luxurious material. D、It establishes trade routes. A选项有关键
A、It helps to produce silk. B、It provides food for human. C、It creates luxurious material. D、It establishes trade routes. A选项有关键
admin
2023-01-30
94
问题
Moderator:
Hello Ladies and Gentleman, I’m glad to introduce our keynote speaker for today’s session, Dr. Jeffrey Lewis. Dr. Lewis, Professor of botany at Harvard University, has written numerous articles and books on plants for years.
Dr. Lewis:
Thank you for that introduction. Today I’m going to talk about the part that plants have played in our history, something most of us probably never give any thought to. Flowers began changing the way the world looked almost as soon as they appeared on Earth about 130 million years ago. Without those flowering plants, it’s likely we wouldn’t be here. They are fundamental to our existence, forming a vital part of our food supplies.
If we look further on in time, to the year 2737 BC, we arrive at the discovery of tea by a Chinese emperor, when a leaf fell into a cup of hot water. This discovery eventually played a very important part in the history of China and the UK. For Britain, when demand for tea was high there were financial implications when a Chinese emperor declared that it could only be bought with silver which they were then forced to find overseas.
A second influential plant emerged around 202 BC in the form of the White Mulberry. It became extremely sought after and it remained so until 220 AD because white mulberries provide food for the worm that creates silk. This luxurious material was responsible for establishing extremely valuable trade routes. And it was along these same routes that different religions made their way around the world. But, unfortunately, they also caused the spread of previously unknown diseases, as well as weapons of war such as gun powder.
Finally, moving into more recent history, we come to the 16th century and the potato. It originated in Central America but it was the Spanish who introduced it to the European diet. There, it quickly became popular because not only did it cost little to grow, but it was also a food source that was rich in vitamins. However, it is perhaps more famous now for the potato famines of the mid 1800s in Ireland. The Irish people were so dependent on the crop that its widespread failure over this period caused the deaths of over a million people and the emigration of a further million to mainland Britain, Canada and the US.
16.What plant is related with Britain’s overseas finding of silver?
17.What contribution does the White Mulberry make to the mankind?
18.According to the speaker, what made the potato more famous?
选项
A、It helps to produce silk.
B、It provides food for human.
C、It creates luxurious material.
D、It establishes trade routes.
答案
A
解析
选项有关键词helps,provides,creates,establishes,故问题可能问某物的作用。问题问桑树对人类的贡献是什么。讲话人提到桑树为吐丝的蚕提供了食物,故桑树对人类的贡献是帮助人们创造了丝绸,A项正确。录音没有提到人类以桑叶为食,故B项错误。蚕而非桑树创造了蚕丝,故C项错误。录音提到丝绸这种奢华的材料是建立这些贸易航路的缘由,而非桑树创立了贸易航路,故D项错误。
转载请注明原文地址:https://kaotiyun.com/show/EJvD777K
0
大学英语六级
相关试题推荐
WhendidKantbecomeaprofessor?
阅读下面的对话,根据其内容写一篇有关背包客backpackers的说明文。要求:1.所写短文应与对话相关内容意义相符,涵盖其要点。2.用你自己的语言来表达,可以改写对话中的句子,但不可以照抄原句。注意:词数80词左右
Thedoctor________metothedangerofnotgettingenoughrestwhileworkingovertime.
Withtheguide________theway,wesetoffonfootintothedarknight.
Whilenormalfloodsresultingfromusualmonsoonrainfallare________thegrowthofcrops,recentlytherehasbeenanincreasein
Reutersarenotagainst________noteworthyarchitecturebutsuggestsacapontheamounttobeprotectedatanyonetime:ifyou
Acertainamountoftheoreticalfrenziesaboutcomicstodayis(i)________.Afterall,similarfrenzieshavebeenseeninother
据国家药品监督管理局消息,首批国产13价肺炎球菌结合疫苗(Pneumococcal13-valentConjugateVaccine)已准入市场。肺炎球菌疾病是导致5岁以下儿童发病和死亡的主要原因。此疫苗为中国自主研发生产之首例,位居世界第
Nathanisafraidtogoswimmingintheocean.Herefusestoenterthewatereventheseaisperfectlycalmandtherearenowave
那还是几年前的一个早晨,在太阳刚刚升起来的时候,踏着熹微的晨光,到一个离旅馆不远的菜市场去。到了邻近菜市场的地方,市场的气氛就逐渐浓了起来。熙熙攘攘的人群,摩肩擦背,来往往。许多老大娘的菜篮子里装满了蔬菜海味鸡鸭鱼肉。有的篮子里活鱼在摇摆着尾巴,肥鸡在咯咯
随机试题
微增战略
患者腹大胀满,按之如囊裹水,甚则颜面微浮,下肢浮肿,脘腹痞胀,得热则舒,精神困倦,怯寒懒动,小便少,大便溏,舌苔白腻,脉缓。治宜选用
A.脓血便B.鲜血便C.果酱样便D.柏油便E.无血便外痔患者粪便呈
报表软件中,可以唯一标识一个表页的标志是()。
下列不属于证券经纪业务法律风险的是()。
根据市场选择的标准,下列细分市场银行应选择的是()。
定义:①专有名词:表示具体的人,事物,地点或机构的专有名称。②抽象名词:表示动作、状态、品质或其他抽象概念。③具体名词:表示物质或不具备确定形状和大小的个体的物质。典型例证:(1)水(2)北京(3)友情上述典型例证与定义存在对应关系的数目有(
AchangesofNewspapersBservicebyNewspapersCsaleplaceofNewspapersDpopularityofNewspapersETrendofNewspapers
Accordingtotheauthor,abornnaturalistshouldfirstofallbe______.Thefirstparagraphtellsusthattheauthor______.
A—SoldB—ForsaleC—AllsoldouttodayD—BargainsaleE—NotforsaleF—Bew
最新回复
(
0
)