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
Legend has it that sometime toward the Civil War (1861 -1865) a government train carrying oxen traveling through the northern pl
Legend has it that sometime toward the Civil War (1861 -1865) a government train carrying oxen traveling through the northern pl
admin
2011-03-01
64
问题
Legend has it that sometime toward the Civil War (1861 -1865) a government train carrying oxen traveling through the northern plains of eastern Wyoming was caught in a snowstorm and had to be abandoned. The driver returned the next spring to see what had become of his cargo. Instead of the skeletons he had expected to find, he saw his oxen, living, fat, and healthy. How had they survived?
The answer lay in a resource that unknowing Americans had trampled underfoot in their haste to cross the "Great American Desert" to reach lands that sometimes proved barren. In the eastern parts of the United States, the preferred grass for forage was as cultivated plant. It grew well with enough rain, then when cut and stored it would cure and become nourishing hay for winter feed. But in the dry grazing lands of the west, that familiar bluejoint grass was often killed by drought. To raise cattle out there seemed risky or even hopeless.
Who could imagine a fairy-tale grass that required no rain and somehow made it possible for cattle to feed themselves all winter? But the surprising western wild grasses did just that. They had wonderfully convenient features that made them superior to the cultivated eastern grasses. Variously known as buffalo, grama grass, or mesquite grass, not only were they immune to drought; but they were actually preserved by the lack of summer and autumn rains. They were not juicy like the cultivated eastern grasses, but had short, hard stems. And they did not need to be cured in a barn, but dried right where they grew on the ground. When they dried in this way, they remained naturally sweet and nourishing through the winter. Cattle were left outdoors to fend for themselves thrived on this hay. And the cattle themselves helped plant the fresh grass year after year, for they trampled the natural seeds firmly into the soil to be watered by the melting snows of winter and the occasional rains of spring. The dry summer air cured them, much as storing in a barn cured the cultivated grasses.
What does the passage mainly discuss?
选项
A、Western migration after the Civil War.
B、The raising of cattle.
C、A type of wild vegetation.
D、The climate of the western United States.
答案
C
解析
文章主题:一种野生植物。其他选项只是提及到的内容而不是主题。
转载请注明原文地址:https://kaotiyun.com/show/6tkd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Whatisthesubjectofthisconversation?
Whatarethespeakerstalkingabout?
WhenhisplanetoucheddownatMontreal’sinternationalairport,DavidLaRochecollectedhisluggageandheadedfortheairport
Ithasalwaysbeenaproblemtodecidewhether"popularmusic"ismusicwhichrepresentsthepeopleorissimplymusicthatthe
Lifelearning(sometimescalledun-schoolingorself-directedlearning)isoneofthoseconceptsthatarealmosteasiertoexpla
TheUnitedStatesisaconfederationofstates.Eachstatehasthe【C1】______tomakelawswithregardtothestate.【C2】______,ba
Geographyisthestudyoftherelationshipbetweenpeopleandtheland.Geographers(地理学家)compareandcontrast【C1】______placeson
Foxesandfarmershavenevergotonwell.Thesesmalldog-likeanimalshavelongbeenaccusedofkillingfarmanimals.Theyare
GeorgeWashingtonwassixfeettall,with【C1】______shoulders,abignose,reddishhairthatwasnowgreyandthat【C2】______ofpo
随机试题
测得信号的频率为0.02340MHz,这数字的有效数字有()。
有避雷线的线路,当土壤电阻率大于500~1000Ω.m时,杆塔的工频接地电阻是下列何值?()
对需重新审核的建设项目的环境影响评价文件,原审批机关应当自收到建设项目环境影响评价文件之日起10日内,将审核意见()建设单位;逾期未通知的,视为审核同意。
某储罐区,储存有正丙醇、乙醇、异丙醇、正丁醇、环己酮、乙二醇、二甘醇、轻柴油和丙二醇,均为内浮顶储罐。罐区储存物主要理化性能见下表。根据以上材料。回答问题:简述建筑灭火器配置。
甲股份有限公司以银行存款回购本公司股票时,应借记的会计科目是股本。()
文件评审的主要目的不包括()。
Whatapity!Consideringhisabilityandexperience,be_____better.
阅读以下文字,完成56~60题。流感病毒侵入呼吸道的纤毛柱状上皮内进行复制,释放后再傻人其他上皮细胞。受染的细胞发生变性、坏死和脱落,局部有炎症反应,一般不发生病毒血症。两周后受感染区域的上皮细胞重新出现或修复。流感病毒偶尔可以进入下呼吸道导致肺
下面错觉与其他三种类型不同的是()。
Whatcanyouknowaboutthemanwhotookallthebillsashecouldfind?Infact,heis______.
最新回复
(
0
)