问题 综合

根据材料结合你所学知识回答

材料一:我国沙尘暴的分布,从时间上看沙尘天气有越来越频繁的趋势,并且有季节的差异。在历史上有明确记载的252次沙尘天气中,发生于2月(农历,以下同)的有59次,3月的有57次,4月的有37次,2~4月共有153次之多,约占全球沙尘天气的61%。

材料二:沙尘暴的形成,除了大风、干旱等自然原因外,人为原因也不能忽视。例如,在一些经济落后地区,人们把采掘药材作为收入的主要途径,过度采挖麻黄、甘草、发菜等,或者采挖多种灌木作为燃料,从而大范围地破坏了植被,长期对草场资源掠夺性利用,盲目增加牲畜的数量,造成草原退化、沙化严重,在农牧交错地带,人口密度增加,土地负荷加重,植物资源遭到破坏,导致大量土地沙化。

(1)我国沙尘暴多发生在________ (季节)。

(2)沙尘暴在我国主要分布在西北地区和  ________地区。

(3)沙尘暴形成的除自然原因以外,人为原因是____________。

(4) 针对沙尘暴问题,你认为可采取哪些措施?

_______________________________________________

答案

(1) 春季 

(2)北方 

(3)过度采挖导致植被破坏  过度放牧导致土地沙化 (答一点即给分)

(4)禁止过度采挖,过度放牧,过度开垦。

大力植树造林 建立预警监测机制

生态移民  (答对一点即可)

题目分析:

(1)我国沙尘暴多发生在冬春季节。

(2)沙尘暴在我国主要分布在西北地区和华北地区,强沙尘暴也可影响到南方。

(3)沙尘暴形成的人为原因是过度采挖导致植被破坏,过度放牧导致土地沙化。

(4)针对沙尘暴问题,可采取的措施有①加强对大风、干旱天气的监测和预报工作,在沙尘暴来临之前,制定有效的应急对策。②健全相关法律法规,加强对森林、草场的管理。③禁止过度放牧,退耕还草,建设人工草场。④大力植树造林,扩大植被覆盖率。⑤开源节流,合理利用水资源。

点评:我国沙尘暴多发生在冬春季节的北方和西北地区,强沙尘暴也可影响到南方;沙尘暴沙源主要是中亚和新疆,以及甘肃和内蒙古、蒙古的广大沙漠地区。围绕保护生态环境,禁止乱砍滥伐、过度放牧等措施展开。

多项选择题
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Last week, I was invited to a doctor’s meeting at the Ruth Hospital. In one of the rooms a patient, an old man, got up from his bed and moved slowly towards me. I could see that he hadn’t long to live, but he came up to me and placed his right foot close to mine on the floor.

“Frank!” I cried in surprise. He couldn’t answer, as I knew, but he tried to smile, all the time keeping his foot close to mine.

My thoughts raced back more than thirty years - to the dark days of 1941, when I was a student in London. The scene was an air-raid shelter (防空洞), in which I and about a hundred other people slept every night. Among them were Mrs West and her son Frank, who lived nearby. Sharing wartime problems, we got to know each other very well. Frank interested me because he was not normal. He had never been normal, ever since he was born. His mother told me he was 37 then, but he had less of a mind than a baby has. Mrs West, then about 75, was a strong, able woman, as she had to be, of course, because Frank depended on her completely. He needed all the attention of a baby.

One night a policeman came into our shelter and told Mrs West that her house had been all destroyed. That wasn’t quite true, because the Wests went on living there for quite some time. But they certainly lost nearly everything they owned.

When that kind of thing happened, the rest of us helped the unlucky ones. So before we separated that morning, I stood beside Frank and measured my right foot against his.

They were about the same size. That night, then, I took a spare pair of shoes to the shelter for Frank. As soon as he saw me, he came running - and paced his right foot against mine. After that, he always greeted me in the same way.

小题1: How did the writer know that the patient was Frank?

A.He was told that Frank was in the hospital.

B.He was invited to study Frank’s illness.

C.Frank’s name was written on the door.

D.Frank greeted him in a special way.小题2: When and where did the writer first meet Frank?

A.In Mrs West’s house in 1941.

B.In an air-raid shelter during the war.

C.At the Ruth Hospital about ten years ago.

D.In London after he Wests’ house was destroyed.小题3: The unlucky ones mentioned by the doctor were ______.

A.those who suffered from illness

B.those who slept in the air-raid shelter

C.those who were killed during the war

D.those whose homes were destroyed in air-raids小题4:The writer placed his foot against Frank’s before he left the shelter ______.

A.to be friendly towards Frank

B.to see if Frank’s feet were normal

C.to find out if Frank could put on his shoes

D.to teach Frank to greet people in a special way