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 is a rare phenomenon. B、It changes useless land into productive land. C、It changes cropland into desert. D、It helps farmers
A、It is a rare phenomenon. B、It changes useless land into productive land. C、It changes cropland into desert. D、It helps farmers
admin
2013-08-12
79
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.[31]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.
29. What does the speaker say about desertification?
30. What is mentioned as one of the poor farming methods?
31. For what purpose is FADE founded?
32. What is said about the trees around cropland?
选项
A、It is a rare phenomenon.
B、It changes useless land into productive land.
C、It changes cropland into desert.
D、It helps farmers remove fertile topsoil.
答案
C
解析
短文开篇便举出了一个沙漠化的例子:当沙漠延伸到邻近的农田时,农田便成了沙漠的一部分。故选C。
转载请注明原文地址:https://kaotiyun.com/show/6W97777K
0
大学英语六级
相关试题推荐
Thepassageismainlyaboutwhyandhowtoplantmoretreestomakeuniversitiesbecomegreen.The"MountTrashmore"programha
Thepassageismainlyaboutwhyandhowtoplantmoretreestomakeuniversitiesbecomegreen.StudentsinHarvardareencourag
Deathcomesquicklyinthemountains.Eachwinterholidaymakersarecaughtunawareastheyhappilyskiawayfromthefixedruns
A、Forhiswedding.B、Forameal.C、Tohisnewhouse.D、Tohisgirlfriend’shome.BForwhatCollininvitedAllenandBob?
Aproblemmorespecifictoschoolsthemselvesispervasivestudentpassivity—alackofactiveparticipationinlearning.Thispr
A、PublicBusesarefastandcheaptransportationtools.B、Parkingisbecomingabigproblem.C、Subwaytrainsareevensaferthan
A、They’rewillingtotakerisks.B、Theyhavelong-termfinancialplans.C、Theyseldomgooninstinct.D、Theybuyfewstocks.A对话
Manybelievethatmanisnotsolvingtheseproblemsofpollutionquicklyenough__________________(是只顾为了谋求私自。在充分认识到这种损害之后,却为时已晚)
A、Tobeamathematician.B、Towritehisownbooks.C、Toteachinhighschool.D、Tobeamedicaldoctor.DWhatwashisoriginalg
Postgraduatedilemmas[A]Decidingwhetherornottobecomeapostgraduatecanbeadaunting(令人畏缩的prospect.Evenifyouaresur
随机试题
Giemsa改良染色法的结果是
A.耳前淋巴结B.下颌下淋巴结C.颌上淋巴结D.颏下淋巴结E.耳后淋巴结前牙及口底炎症主要引流至
关于沥青碎石路面的说法,正确的有()。[2013年真题]
建筑高度110m的外墙保温材料的燃烧性能等级应为()。
关于库存现金日记账,下列说法中,正确的有()。
全国股份转让系统的服务对象主要为创新型、创业型、成长型()。
导游讲解要做到形象生动,具有幽默感,必须()。
随着社会适应性逐渐提高,区分外部自我和内部自我的能力逐渐增强,儿童渐渐能够比较实际地判断社会交往情境,并根据这些判断而表现出复杂的社会自我。同时,儿童自我结构的日趋稳定,使儿童能够根据自己的内部价值标准和信念体系。以及外部情境的需要调整自己的行为。
Thefitnessmovementthatbeganinthelate1960sandearly1970scentered(31)aerobicexercise.Millionsofindividualsbecame
Theyadmittedthattheysharedthesame______onthematter.(清华大学2007年试题)
最新回复
(
0
)