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
40
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.
Which of the following can be inferred about the cultivated grass mentioned in Para. 2?
选项
A、It had to be imported into the United States.
B、Cattle raised in the western United States refused to eat it.
C、It was difficult for cattle to digest.
D、It would probably not grow in the western United States.
答案
D
解析
参见第二段倒数第二句:was often killed by drought,暗示了这种草并不适宜在西部那种恶劣的环境下生存。
转载请注明原文地址:https://jikaoti.com/ti/XzdsFFFM
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
Whendoestheconversationprobablytakeplace?
Whatarethespeakerstalkingabout?
Whatarethespeakerstalkingabout?
TheUnitedStatesisaconfederationofstates.Eachstatehasthe【C1】______tomakelawswithregardtothestate.【C2】______,ba
TheUnitedStatesisaconfederationofstates.Eachstatehasthe【C1】______tomakelawswithregardtothestate.【C2】______,ba
TheUnitedStatesisaconfederationofstates.Eachstatehasthe【C1】______tomakelawswithregardtothestate.【C2】______,ba
Wheredoestheconversationtakeplace?
WhatdowemeanbyaperfectEnglishpronunciation?Inone【C1】______thereareasmanydifferentkindsofEnglishastherearesp
Foxesandfarmershavenevergotonwell.Thesesmalldog-likeanimalshavelongbeenaccusedofkillingfarmanimals.Theyare
随机试题
下列对事业单位属性表述不正确的是()。
A、1B、3C、4D、10B该题中SQL查询的含义是利用GROUPBY子句按部门统计销售商品总价最小值,因为表中列出3个部门,故统计结果应有3个,所以选项B)正确。
Aftertheflood,thevillagersaretryingtheirbesttogetthingbackto______.
患者女性,47岁。碘过敏试验阴性,护士在做膀胱造影前还必须准备急救药物的目的是
信号传输分配系统是一个信号电平的有限分配网络,它由( )组成。
分析20世纪前期美国教育改革的主要内容及特征。
下列矩阵中能相似于对角阵的矩阵是()
The(71)definesthephasesthatconnectthebeginningofaprojecttoitsend.
Whentheymarry,husbandsandwiveshavewell-developedhealthhistoriesandwell-establishedinbornanddevelopmentalhabitsto
PeopleinalargeareaanypossessthesameDNAthreadbecause______.Thepossibleresearchoffamilytreesisbasedonthefac
最新回复
(
0
)