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
2024-02-22
50
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/3472519.html
相关试题推荐
[originaltext]Howdothebirdsmanagetofindtheirway?Thereseemstobe
[originaltext](29)Somepeopledon’tlikeanythingtobeoutofplace.They
[originaltext]Anoldfriendfrom"abroad,whomIwasexpectingtostaywit
[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
--Thethreadofkitebrokeanditflewaway.Itoldyouitwouldeasilybreak___
Itisreportedthattotestwhetherafriendisatrueone,askhimorhert
ThereareseveralwaysinwhichAmericandiningcustomsaredifferentfromt
C
绘制太阳系构成示意图,按距日的远近注明八大行星及小行星带,并说明其在教学中的作用
下列有关格里高利圣咏的描述,正确的是()。A.以拉丁文演唱 B.结构强调对
新生儿肺透明膜病胸部X线片表现较特异,可见A.两肺透光度增强 B.两侧肺纹理增
基金销售机构从事基金销售活动,存在( )情形时,中国证券监督管理委员会将依据《
发电厂和变电所的控制电缆和绝缘导线按机械强度要求。 弱电控制回路导体截面(铜
1lOkV及以下变电所电气设备的绝缘水平应以避雷器标称放电电流()下的残压为
最新回复
(
0
)