题目内容

【题目】水资源开发利用率是指流域或区域用水量占水资源可利用量的比率。国际上一般认为,一条河流的合理开发限度为40%。而当利用率超过40%时,即表明严重缺水,可能制约经济发展,并导致社会稳定和环境安全问题。据材料回答下列各题。

我国部分地区水资源开发利用率(2000年)

世界平均

中国平均

河西走廊

塔里木河

准噶尔盆地

海河流域

水资源

开发利用率

30%

20%

92%

79%

80%

95%

22.【1】下列关于我国水资源开发的叙述,正确的是

A.水资源可利用量均高于世界平均值

B.水资源最紧缺的地区是准噶尔盆地

C.解决水资源问题的核心是提高利用率

D.解决水资源问题的根本措施是调水

【2】海河流域水资源开发利用率高于塔里木河流域的原因是

A.降水总量少

B.降水年际变化大

C.浪费更严重

D.水资源需求量大

【答案】

【1】C

【2】D

【解析】

试题分析:

【1】我国西北地区水资源短缺,可利用量小,我国水资源最短缺的地区为华北海河流域;解决水资源问题的核心是提高利用率,所以C正确。

【2】海河流域水资源开发利用率高于塔里木河流域的原因是海河流域工农业发达,对水资源的需求量大。

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相关题目

【题目】根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

If anyone had told me three years ago that I would be spending most of my weekends camping, I would have laughed heartily. Campers, in my eyes, were people who enjoyed insect bites, ill-cooked meals, and uncomfortable sleeping bags. They had nothing in common with me. 1

The friends who introduced me to camping thought that it meant to be a pioneer. 2 We slept in a tent, cooked over an open fire, and walked a long distance to take the shower and use the bathroom. This brief visit with Mother Nature cost me two days off from work, recovering from a bad case of sunburn and the doctor’s bill for my son’s food poisoning.

I was, nevertheless, talked into going on another fun-filled holiday in the wilderness. 3 Instead, we had a pop-up camper with comfortable beds and an air conditioner. My nature-loving friends had remembered to bring all the necessities of life.

4 We have done a lot of it since. Recently, we bought a twenty-eight-foot travel trailer complete with a bathroom and a built-in TV set. There is a separate bedroom, a modern kitchen with a refrigerator. The trailer even has matching carpet and curtains.

5 It must be true that sooner or later, everyone finds his or her way back to nature. I recommend that you find your way in style.

A. This time there was no tent.

B. Things are going to be improved.

C. The trip they took me on was a rough one.

D. I wasto learn a lot about camping since then, however.

E. I must say that I have certainly come to enjoy camping.

F. After the trip, my family became quite interested in camping.

G. There was no shade as the trees were no more than 3 feet tall.

【题目】D

If you are a fruit grower or would like to become one take advantage of Apple Day to see what’s around. It’s called Apple Day but in practice it’s more like Apple Month. The day itself is on October 21, but since it has caught on, events now spread out over most of October around Britain.

Visiting an apple event is a good chance to see, and often taste, a wide variety of apples. To people who are used to the limited choice of apples such as Golden Delicious and Royal Gala in supermarkets, it can be quite an eye opener to see the range of classical apples still in existence, such as Decio which was grown by the Romans. Although it doesn’t taste of anything special, it’s still worth a try, as is the knobbly(多疙瘩的) Cat’s Head which is more of a curiosity than anything else.

There are also varieties developed to suit specific local conditions. One of the very best varieties for eating quality is Orleans Reinette, but you’ll need a warm, sheltered place with perfect soil to grow it, so it’s a pipe dream for most apple lovers who fall for it.

At the events, you can meet expert growers and discuss which ones will best suit your conditions, and because these are family affairs, children are well catered for with apple-themed fun and games.

Apple Days are being held at all sorts of places with an interest in fruit, including stately gardens and commercial orchards(果园). If you want to have a real orchard experience, try visiting the National Fruit Collection at Brogdale, near Faversham in Kent.

【1】What can people do at the apple events?

A. Attend experts’ lectures. B. Visit fruit-loving families.

C. Plant fruit trees in an orchard. D. Taste many kinds of apples.

【2】 What can we learn about Decio?

A. It is a new variety. B. It has a strange look.

C. It is rarely seen now. D. It has a special taste.

【3】What does the underlined phrase "a pipe dream" in Paragraph 3 mean?

A. A practical idea. B. A vain hope.

C. A brilliant plan. D. A selfish desire.

【4】 What is the author’s purpose in writing the text?

A. To show how to grow apples. B. To introduce an apple festival.

C. To help people select apples. D. To promote apple research.

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