首页
登录
职称英语
[originaltext] (30) "Marginal" lands might have low quality soil. Or they mi
[originaltext] (30) "Marginal" lands might have low quality soil. Or they mi
游客
2023-07-21
78
管理
问题
(30) "Marginal" lands might have low quality soil. Or they might be on a hillside that rises sharply. Or they might be in an area that gets limited rainfall. In any case, they are the last to be planted under good conditions and the first to be abandoned under bad conditions.:
But there are uses for marginal lands. Most often they are used as grasslands for cattle, sheep or goats. A farmer might use native grasses or non native seeds. Either way, it is important to establish good ground cover to avoid the loss of soil through erosion. But using marginal land for grazing is not as simple as it might sound. Cattle can damage forage(草料) crops by eating down to the roots. Their weight also crushes the soil. That can make the ground too hard for growing. (31) A way to reduce the damage from overgrazing is to move animals from one field to another. Experts say rotational grazing like this is extremely important for marginal land.
Another use for marginal land is for tree crops. Trees help support the soil. They reduce the damaging effects of wind and rain. And they can provide grazing animals with shade from the sun. Studies have shown that white pines grow well on marginal land. They grow fast and provide good quality wood. There are slower-growing trees like the black walnut that provide a nut crop as well as wood. Marginal lands need care. Failing to take care of them might only make a bad situation worse. But good planning can turn a marginal resource into a highly productive one.
Questions:30. Which of the following is a marginal land?
31.According to the speaker, how to reduce the damage on marginal lands from overgrazing?
32.Which of the following is NOT the advantage of planting trees on marginal land?
选项
A、Grassland for animals.
B、A land covered with trees.
C、A steep slope of a hill.
D、A land with fertile soil.
答案
C
解析
短文开头提到边缘性土地土质差,一般位于陡坡处或雨水稀缺处,故选C)项。
转载请注明原文地址:https://tihaiku.com/zcyy/2856255.html
相关试题推荐
[originaltext]Howdothebirdsmanagetofindtheirway?Thereseemstobe
[originaltext](29)Somepeopledon’tlikeanythingtobeoutofplace.They
[originaltext](29)Somepeopledon’tlikeanythingtobeoutofplace.They
[originaltext]Anoldfriendfrom"abroad,whomIwasexpectingtostaywit
[originaltext]Anoldfriendfrom"abroad,whomIwasexpectingtostaywit
[originaltext]M:Hello,(19)CampusDaily,advertisingdepartment.ThisisMark
[originaltext]M:Hello,(19)CampusDaily,advertisingdepartment.ThisisMark
[originaltext]M:Hello,(19)CampusDaily,advertisingdepartment.ThisisMark
[originaltext]Atonetimeitwasthedreamofmanylittlegirlstobecomea
[originaltext]Atonetimeitwasthedreamofmanylittlegirlstobecomea
随机试题
EnglishBusinessLetterFormatI.Demandsofstationery—the
()市场营销()公司财务学[br]()系统设计与分析()农业经济学W、A
Facebook—withitsrequirementthatusers(1)_____atleast13—andTwitterar
[originaltext]W:(19)Youareanexpertonurbanproblem.Mr.Cross.Iwonderho
机械通气治疗的适应证除外A.心肺复苏后期治疗 B.通气功能不全或衰竭 C.呼
惊厥伴高血压可见于A.脑炎 B.急性肾炎 C.脑膜炎 D.脑出血 E.脑
某企业根据人力资源需求与供给状况及相关资料,制定2017年人力资源总体规划和人员
根据我国《民事诉讼法》以及相关司法解释,下列关于国际司法协助的说法中,正确的有哪
深龋的垫底材料不应选用A.氢氧化钙制剂 B.磷酸锌粘固粉 C.聚羧酸锌粘固粉
大鼠亚慢性毒性试验染毒期为( )。A.1天 B.14天 C.90天 D.
最新回复
(
0
)