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
A、It can prevent global warming. B、It can catch blowing sand. C、It can stop desertification. D、It forces farmers leave cropland.
A、It can prevent global warming. B、It can catch blowing sand. C、It can stop desertification. D、It forces farmers leave cropland.
admin
2014-10-08
31
问题
Desertification is a process. It changes productive land into useless land. One example of desertification is when a desert spreads into nearby cropland. In time, the cropland becomes an extension of the desert. But that is not the only way farmers lose fertile soil. Long dry periods, warmer temperatures and the removal of trees can all lead to the loss of good cropland. Floods can remove fertile topsoil and begin a process resulting in the loss of planting areas.
Another danger to good land is poor farming methods. Farmers should avoid continually planting crops in the same places, or letting animals feed year after year on the same lands.
Countries from Guatemala to Greece to Vietnam are working against the loss of cropland. Africa especially faces the risk of desertification.
When cropland turns to desert, people move to other places for better land and better jobs. This migration can cause political and social tensions. A nonprofit organization in Nigeria is working to bring public attention to the problem. The group is called Fighting Against Desert Encroachment, or FADE. Newton Jibunoh who started this group in 2000 is currently leading a delegation to thirteen African countries to discuss the dangers of losing farmlands. In northern Nigeria, the group organized a competition between schools in seven areas. The goal was to see who could plant the most trees.
Trees are often cut down for fuel wood. But lines of trees around cropland can catch blowing sand. In addition, tree roots can hold soil in place. Even within a desert, trees can be planted as borders around grassy areas.
Questions 20 to 22 are based on the passage you have just heard.
19. What does the speaker say about desertification?
20. What is mentioned as one of the poor farming methods?
21. For what purpose is FADE founded?
22. What is said about the trees around cropland?
选项
A、It can prevent global warming.
B、It can catch blowing sand.
C、It can stop desertification.
D、It forces farmers leave cropland.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/Sxm7777K
0
大学英语六级
相关试题推荐
A、Theymightgetagoodpositionintheirnation’sarmedforces.B、Theygettoknowdifferentpeoplefromdifferentbackgrounds.
AlmosteveryonewhoworriesaboutAmerica’s"competitiveness"intheworldsighsforthesorrystateofU.S.K-12education.Fr
A、Heworkedinaconsultantcompany.B、Heworkedinagovernmentlawoffice.C、Heworkedasadoctor.D、Heworkedasanofficial
Itistruethatthegroupinteractionshavebothpositiveandnegativesides.Whenwe【B1】______,conflictcannotbegottenrid
ItsaysHTV-relateddeathsappeartohavereachedtheirhighestpointin2004.Sincethe【B1】______,deathshavefallenbyaround
Worldleadersneedtotakeactionontheenergycrisisthatistakingshapebeforeoureyes.Oilpricesare【C1】______anditlook
A、Thekidscouldn’thidethingsperfectly.B、Thehider’sbodylanguagetellsthelocationunconsciously.C、Thepressureforcedt
A、Itisasignofhumanintelligence.B、Itimproveswithconstantpractice.C、Itissomethingwearebornwith.D、Itvariesfrom
A、Drawingupabusinessplan.B、Finalizingacontract.C、Reviewingaco-authoredarticle.D、Discussingatermpaper.B
Howmenfirstlearnttoinventwordsisunknown;inotherwords,theoriginoflanguageisamystery.Allwereallyknowisthat
随机试题
孕中期保健的重点是
患者,男,70岁,高血压三十余年。突然剧烈头痛、呕吐、意识不清。护理体检发现左侧周围性面瘫,右侧肢体瘫痪,巴氏征阳性,考虑为脑出血收入院。此时首要的护理措施是
关于数据与信息的关系,下列说法错误的是()。
行政行为合法的有效成立条件是()。①行为主体合法;②行为客体合法;③行为内容合法;④行为程序合法;⑤行为中介合法;⑥形式合法;⑦结果合法
与衬铅设备相比,搪铅设备使用的不同点有()。
下列各项中,属于债务重组日债务人应计入重组后负债账面价值的有()。
下列对哲学家及其思想的认定不正确的是()。
软件详细设计的方框图方法常用两个盒子:数据盒和过程盒,在数据盒中包含四种描述,它们是【】、局部数据、数据结构和调用参数描述。
A、Wivesandhusbandsdoingexactlythesamething.B、Equalityofthesexes.C、Husbandsearningenoughmoneytosupporttheirfam
A、Theyrefusedtoapologizeforhavingfollowedherthroughthetown.B、Theyregrettedhavingwronglyaccusedherofstealing.C
最新回复
(
0
)