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
16
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://www.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
Economistsusuallystudymarkets.Now,twoAmericanshavewontheNobelPriz
I’minterestedinthecriminal【B1】______systemofourcountry.Itseemstom
月饼是我国各族人民喜爱的传统节日特色食品(specialty)。中秋节那天,人们一边赏月,一边吃月饼。一个圆圆的月饼全家分着吃,代表着家人团圆。吃月饼的
当单位灭火人员不能接近火场时,应根据着火对象及火灾现场实际,果断地在蔓延方向采取
A.元气耗损,脏腑功能减退,抗病力下降 B.气机不畅,流通受阻,脏腑经络功能障
在半强有效市场下,以下信息中,没有被反映在证券价格中的是()。A.上市公司去年
对外周血涂片进行镜检,观察200个中性粒细胞,其中含有中毒颗粒的细胞数为75个,
类风湿关节炎缓解期最重要的护理措施是A、避免疲劳 B、避免精神刺激 C、避免
体检时体征不明显的阑尾炎是 A.小儿阑尾炎B.成人阑尾炎C.老年阑尾炎D
下列关于子公司法人资格和民事责任承担的表述中,符合公司法律制度规定的是()。A.
最新回复
(
0
)