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
2016-03-31
24
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/HDL7777K
0
大学英语六级
相关试题推荐
A、Sheisarrogant.B、Sheisinexperienced.C、Sheisconfident.D、Sheisoffensive.C当男士听完女士的对自己工作经验的介绍后评价说:“你看起来十分A信。”可见女士在面试中很有
A、Impatient.B、Serious.C、Enthusiastic.D、Nervous.B关键是听到女士说I’llpointoutyourlimitations(短处)aswellasyourstrengths(长处),即写出
Livingnearairportsmightnotonlyleadtoresidentssufferingsleeplessnights—theycouldalsohaveterribleweather,scientis
Thecomplicationsfrequentlyaccompanyingdiabetes,suchasimpairmentofvisionandofkidneyfunction,arenowthoughttoresu
TakingVacationsExperiencesan82PercentIncreaseinJobPerformanceA)Thistimeofyear,manyEuropeansarelookingforwardt
"Iwanttocriticizethesocialsystem,andtoshowitatwork,atitsmostintense."VirginiaWoolf’sprovocativestatementab
A、Atabookstore.B、Atthedentist’s.C、Inarestaurant.D、Inthelibrary.B对话中男士提到doanothertooth(补另一颗牙)和filltheothercavity
A、Heistherightmantogetthejobdone.B、Heisamanwithprofessionalexpertise.C、Heisnoteasytogetalongwith.D、Hei
A、Keeptheminfamily-baseddaycarecenters.B、Letthemstaywiththeirparentsorteachers.C、Askelderlyadultstoattendthe
A、He’snotplanningtomove.B、Hehasfoundanewapartment.C、He’slookingforanewroommate.D、He’salsohavingtroublewith
随机试题
在我国,标准规定分度圆上的压力角为()。
"孤腑"是指
政府通过定额制度限制新汽车登记,以保证每年固定的汽车增长数量,以此来控制汽车的需求。这是因为目前市场对汽车的需求属于()。
某国有企业总经理张某欲将一套自有住房以200万元出售。某报记者李某找到张某,出价100万元,张某拒绝。李某对张某说:“我有你受贿的证据,答应我就把证据还给你;不答应我就举报你。”张某无奈签订了以100万元将该房卖与李某的合同。合同签订后,李某将张某在办公楼
仓库空间的评价指标有哪些?
教学设计包括以下哪几个方面()
黄老师在研究学生的课堂学习时,发现有几种不同的形式。其中,()学习是个人主义的,其最大特征是个人目标的独立性。
公安工作的群众路线是公安工作实行的一切为了群众,一切依靠群众,从群众中来,到群众中去的工作路线。()
A、 B、 C、 D、 C根据第一组图可知规律为:前两个图去异存同得到第三个图。故正确答案为C。
求函数F(x)=的间断点,并判断它们的类型.
最新回复
(
0
)