题目内容

【题目】读江苏和宁夏两省区水资源利用情况对照表,联系所学知识,回答下列小题。

省(自治区)

人口总数(万)

人均

用水量

(m3/人年)

人均生活

用水量

(m3/人年)

人均生产

用水量

(m3/人 年)

农田灌溉亩

均用水量

(m3/亩年)

万元GDP

用水量

(m3/万元)

江苏

9566

610

70

540

446

570

宁夏

630

1780

20

1750

1352

4000

【1】表中数据表明

A.宁夏用水总量超过江苏

B.江苏生活用水占总用水量的比重约为宁夏的10倍多

C.宁夏万元GDP用水量是江苏的8倍

D.两省区生活用水比重均大于生产用水比重

【2】宁夏人均用水超过江苏的主要原因是

A.宁夏临黄河,水源充足

B.宁夏气候干旱,蒸发旺盛,工农业发达,生产用水量大

C.宁夏人口密度小,人均水资源占有量大

D.两省区产业结构不同

【答案】

【1】B

【2】D

【解析】

试题分析:

【1】用水总量=总人数*人均用水量,江苏总人数多,用水总量大;生活用水总总用量的比重=人均生活用水量/人均用水量,算出江苏生活用水占总用水量的比重约为宁夏的10倍多,B正确;宁夏万元GDP用水量不到江苏的8倍;生产用水比重=人均生产用水量/人均用水量,两省区生活用水比重均小于生产用水比重。

【2】宁夏人均用水超过江苏的主要原因是两省区产业结构不同,D正确。

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Being successful in an exam is not just about studying hard and knowing the subject inside out. 1

Research has shown that the calmer the mind, the better its ability to register and remember information. 2 When the mind is relaxed, it is in the "state of alpha", where your brain waves are at about seven to fourteen cycles per second, the most helpful state for studying.

Choose a quiet place for studying and have everything handy that you need: books, pens, something to drink. 3 In this case, you can see yourself being congratulated by your family, friends and teachers. Enjoy the experience. And now you should be completely charged up and ready to absorb and keep important information.

4 It is a good idea to make a list of all the important things you have to learn, in order of importance, and estimate how much time you need for each one. Add it all up and compare this with how much time you have available. This will tell you if you have time to read slowly and carefully, or if you can only skim; also it will show you how many times you can afford to look over the same information.

Because stress can have a negative effect on your memory, it’s important to stay calm during tests. 5 Breathing exercises during the examination, for example, can be extremely effective in helping you relax and reverse your stress response: just take deep breaths, and let the stress coe out when you exhale(呼气).

A. Learn to both read between lines and skim.

B. Ensure that you sleep and eat well before a test.

C. Relax your body and mind and imagine the day of the results.

D. There are some stress relief techniques that can help to calm you down.

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G. Depending on what you want to study, and how much you have to cover, plan your time.

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