【题目】读下列图文资料回答问题。
黑土是大量枯枝落叶或草本植物难以腐化、分解，历经长时间演化形成的肥沃土壤。下图示意某优质黑士区。20世纪30年代以来，该区域农作物种植面积不断扩大，黑土侵蚀严重。60年代起，该区域采取了滴灌等一系列措施，黑土侵蚀明显减少。
（1）说明该地区气候条件对黑土形成的影响。
（2）分析20世纪30年代以来该地区黑土侵蚀严重的原因。
（3）说明滴灌对减轻该地区黑土侵蚀的作用。
（4）简述该地区土壤侵蚀减轻所产生的生态效益。
【答案】
（1）夏季雨热同期，利于植被生长，冬季较长，寒冷干燥，枯枝落叶多；微生物活动弱，枯枝落叶分解缓慢。
（2）种植面积扩大，导致森林、草地破坏，加剧黑土退化；黑土区深居内陆，冬春降水较少干旱，多大风天气，风力侵蚀作用显著；夏季降水集中多暴雨流水侵蚀作用较强。
（3）保持黑土水分，防止旱季因土壤过度干燥，减轻风力对土壤的侵蚀；防过度灌溉造成水土流失
（4）减少大气中的扬尘；改善水质, 保护土壤肥力；保护生物的栖息地，有利于维护生物多样性
【解析】
试题分析：
（1）该地夏季雨热同期，冬季较长，寒冷干燥，枯枝落叶多，有利于黑土的形成。
（2）该地区黑土侵蚀严重的原因，可以从草地破坏、风力侵蚀等方面回答。
（3）滴灌有利于保持黑土水分、减轻风力对土壤的侵蚀。
（4）土壤侵蚀减轻所产生的生态效益，可以从改善水质、保护土壤肥力、保护生物多样性等方面回答。
【知识点】区域存在的环境与发展问题及其产生的危害，以及有关的治理保护措施
励耘书业暑假衔接宁波出版社系列答案科目：高中地理 来源： 题型：
【题目】短文改错
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者(从第11处起)不计分。
An old couple in the seventies loved traveling. Every time they went away, they always left any money and a note on the table for a potential thief. This time they are taking a two-month trip to Guangdong to celebrate this year Spring Festival. They left a note which says, "I know you have suffered a lot this year. You must eager to go home to see your parents. Please take the money and buy a ticket. " In fact, a thief did break in a few years ago .He took out the money butleft everything else untouching. When asked how they did so, the husband said, "I believe people are born kindly .We should reach out a helping hand when somebody is in trouble.”
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】阅读下列材料，回答下题。
材料一 东北平原地区是我国的主要商品粮基地分布区，该基地也是我国大豆的主产区。但近年来，由于进口大豆的冲击，豆价大幅下跌，由原来的2.2元/kg，降到现在的1.6元/kg，降幅近30%。
材料二 国产大豆与进口大豆比较表 注：运输费用以到达大连为例。
材料三 东北平原某地生态农业示意图
（1）东北平原地区是我国农业机械化和水利化水平较高的农业区，从自然条件来看，这里有利于机械化、水利化建设的因素是______________________________________________________________________。
（2）由于价格下跌，产品滞销，豆农的生产积极性大受打击，纷纷减产或转产，我国东北大豆生产呈现萎缩之势。你认为应采取哪些措施，使东北大豆生产走出困境，重振雄风。
（3）生态农业作为农业的可持续发展之路在东北大豆产区近年来得到一定的发展和推广，试分析图示生态农业模式的好处。
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】读“山西省工业增加值结构图”，完成下列问题。
【1】改革开放初期，山西省经济的核心部门是( )
A．原料业 B．加工业
C．采掘业 D．冶金业
【2】围绕能源开发，山西省构建的产业链是( )
①煤一电一铝 ②煤一焦一化 ③煤一气一液
④煤一铁一钢 ⑤煤一电一钢
A．①②③ B．②③④
C．①②④ D．③④⑤
【3】下列叙述正确的是( )
A.加工工业比重一直呈下降趋势
B.原料工业比重2000年比1995年增加了10%
C.采掘业逐渐取代加工工业占到了主体地位
D.冶金、化学、建材等部门属于加工工业
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】--- Were all three people in the car injured in the accident?
--- No, only the two passengers who got hurt.
A. there were
B. it were
C. there was
D. it was
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】First ________ is a temporary form of help ________ to someone who suddenly falls ill or gets injured before a
doctor can be found.
A．favor；to give B．benefit；giving
C．aid；given D．help；give
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】阅读理解。
California Condor’s Shocking Recovery
California condors are North America’s largest birds, with wing-length of up to 3 meters. In the 1980s, electrical lines and lead poisoning(铅中毒) nearly drove them to dying out. Now, electric shock training and medical treatment are helping to rescue these big birds.
In the late 1980s, the last few condors were taken from the wild, and there are now more than 150 flying over California and nearby Arizona, Utah and Baja in Mexico.
Electrical lines have been killing them off. “As they go in to rest for the night, they just don’t see the power lines,” says Bruce Rideout of San Diego Zoo. Their wings can bridge the gap between lines, resulting in electrocution(电死) if they touch two lines at once.
So scientists have come up with a shocking idea. Tall poles, placed in large training areas, teach the birds to stay clear of electrical lines by giving them a painful but undeadly electric shock. Before the training was introduced, 66% of set-freed condors died of electrocution. This has now dropped to 18%.
Lead poisonous has proved more difficult to deal with. When condors eat dead bodies of other animals containing lead, they absorb large quantities of lead. This affects their nervous systems and ability to produce baby birds, and can lead to kidney(肾) failures and death. So condors with high levels of lead are sent to Los Angeles Zoo, where they are treated with calcium EDTA, a chemical that removes lead from the blood over several days. This work is starting to pay off. The annual death rate for adult condors has dropped from 38% in 2000 to 5.4% in 2011.
Rideout’s team thinks that the California condors’ average survival time in the wild is now just under eight years. “Although these measures are not effective forever, they are vital for now,” he says. “They are truly good birds that are worth every effort we put into recovering them. ”
【1】California condors attract researchers’ interest because they .
A.are active at night
B.had to be bred in the wild
C.are found on in California
D.almost died out in the 1980s
【2】Researchers have found electrical lines are.
A.blocking condors’ journey home
B. big killers of Califorbnia condoras
C. rest places for condors at night
D. used to keep condors away
【3】According to Paraghaph 5 ,lead poisoning.
A.makes condors too nervous to fly
B. has little effect on condors’ kidneys
C. can hardly be gotten rid of form condors’ blood
D. makes it different for condors to produce baby birds
【4】The passage shows that .
A.the average survival time of condors is satisfactory
B.Rideout’s research interest lies in electric engineering
C.the efforts to protect condors have brought good results
D.researchers have found the final answers to the problem
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】读图回答下列问题。
【1】
A. 甲区域实地面积小于乙区域
B. ①地与③地自转线速度相等
C. ②地与④地的距离为2220KM
D. ③地位于④地的西南方向
【2】
A. ①--水资源短缺，干旱面积广大
B. ②--地势较平坦，平原面积广阔
C. ③--植被类型是亚热带常绿硬叶林
D. ④--太阳能、地热能等能源丰富
查看答案和解析>>
科目：高中地理 来源： 题型：
【题目】I’ve never the theory that people are more important than animals.
A. corresponded to
B. subscribed to
C. referred to
D. contributed to
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com