题目内容

【题目】读我国新疆(土地面积166.48万km2)荒漠化情况统计数据表,回答下列各题。

表一:新疆的荒漠化土地类型(万km2)

荒漠化土地总量

耕地

林地

草地

未利用土地

111.32

2.35

4.31

50.54

54.12

表二:新疆荒漠化土地形成因素(万km2)

水蚀

风蚀

冻融

盐碱化

12.53

83.93

5.24

9.398

【1】关于新疆土地荒漠化的叙述,正确的是

A.荒漠化土地面积小于非荒漠化土地面积

B.荒漠化主要是滥伐林木造成的

C.保护草地,合理利用草场资源是治理荒漠化的主要任务

D.荒漠化发生在有人类活动的地区

【2】关于土地荒漠化的叙述,正确的是

A.中国南方土地荒漠化地区生态环境尤为脆弱

B.自然因素引起的荒漠化速率比人为活动引起的要快

C.三江平原过度垦殖,土地荒漠化更加严重

D.西北地区风蚀强烈,风沙灾害比较普遍

【答案】

【1】C

【2】D

【解析】

试题分析:

【1】通过数据可以计算出,荒漠化土地面积大于非荒漠化土地面积;新疆主要的农业用地是草地,荒漠化土地形成因素主要是风蚀,这是由于过度放牧形成的;保护草地,合理利用草场资源是治理该地区荒漠化的主要措施,在自然条件下也能形成荒漠化,只是过程一般很缓慢。

【2】荒漠化是人类不当的活动作用于脆弱的地理环境引起的土地退化,从表中数据和新疆的环境特点可以分析得知,新疆的荒漠化主要是过度放牧、过度开垦,破坏地表植被,土壤遭受风蚀、水蚀等形成的,从形成的动力条件来看,主要是近地面水平气流和地表径流(风蚀、水蚀)。

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阅读下面短文,从短文后各题所给的A、B、C和D四个选项中,选出可以填入空白处的最佳选项

My wife and I moved into our home nine years ago. We 1 a lot of time and 2 in the yard to get it looking the way it does today. We live on a corner, and the entire side of the yard is surrounded by a professionally built rock wall.

We did the best to cultivate(耕作) it and called this area our rock garden. 3 we found flowers and plants, Denise or I would plant them, just to bring some 4 to the area.

Last summer I found a tiny plant that I could not immediately 5 . I was sure that we didn’t plant it. We decided to let it 6 to grow until we could 7 what it was.

Weeks passed, and as I made my way back to the 8 plant, it appeared to be a sunflower. I 9 to nurture(培养) it and weed around it. As I picked up rocks from the area to get to the 10 , I noticed something 11 . The sunflower had not started to grow from where I first saw the stalks(茎)appear. 12 , it had begun under a big rock and grown under and around it to 13 the sun.

That’s when I realized that if a tiny sunflower wouldn’t let a big rock stand in its way when growing up, then we have the 14 to do the same. 15 we believe in ourselves, like that tiny sunflower, we can 16 the nourishment(营养)and grow. We need to believe in 17 , knowing that we have the ability to 18 our desires. If you stand all like the tiny sunflower and are 19 of who and what you are, then the environment will begin to 20 you. You will find a way to go under or around your obstacles(障碍)in order to reach your goals.

1.A.took B. spent C. cost D. paid

2.A.strength B. energy C. power D. force

3.A.However B. When C. Whenever D. Whatever

4.A.weed B. color C. water D. soil

5.A.classify B. accept C. clarify D. identify

6.A.remain B. prevent C. continue D. leave

7.A.figure out B. hold out C. stand out D. try out

8.A.endangered B. convenient C. mysterious D. green

9.A.refused B. decided C. adapted D. remembered

10.A.seeds B. talks C. rocks D. weeds

11.A.unusual B. common C. fantastic D. unnatural

12.A.Finally B. Basically C. Actually D. Suddenly

13.A.enlarge B. expand C. reach D. spread

14.A.chance B. choice C. benefit D. ability

15.A.What if B.As far as C. Only if D.As long as

16.A.inspire B. get C. lose D. refuse

17.A.ourselves B. yourselves C. themselves D. myself

18.A.keep B. adjust C. achieve D. make

19.A.ashamed B. pride C. proud D. ambitious

20.A.ensure B. support C. satisfy D. protect

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